US20170227963A1 - Vehicle, system and methods for determining autopilot parameters in a vehicle - Google Patents
Vehicle, system and methods for determining autopilot parameters in a vehicle Download PDFInfo
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- US20170227963A1 US20170227963A1 US15/206,222 US201615206222A US2017227963A1 US 20170227963 A1 US20170227963 A1 US 20170227963A1 US 201615206222 A US201615206222 A US 201615206222A US 2017227963 A1 US2017227963 A1 US 2017227963A1
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- autopilot
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- vehicle
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Definitions
- the disclosed subject matter relates to vehicles, systems and methods for autopilot operation of vehicles.
- the disclosed subject matter relates to vehicles, systems and methods for determining autopilot parameters for vehicles.
- These vehicles may be unmanned vehicles, optionally manned vehicles, aerial vehicles, terrestrial vehicles such as cars or all-terrain vehicles, aquatic or oceanic vehicles such as boats or submarines, or space vehicles.
- an autopilot feature to assume control of the vehicle.
- Such a control may be used in conjunction with an operator or pilot, or can even be used in fully autonomous or unmanned vehicles.
- Control systems facilitating autopilot features are generally negative feedback-based, in that the autopilot system senses an undesired change in an aspect of the vehicle's motion, and applies a negative feedback signal to a vehicle controller to counteract the undesired (positive) change. For example, an aircraft facing an unexpected ascension due to an air current is controlled by steering the vehicle slightly downwards to maintain a constant altitude.
- PID Proportional Integral Differential
- u ⁇ ( t ) K p ⁇ e ⁇ ( t ) + K i ⁇ ⁇ 0 ⁇ ⁇ e ⁇ ( ⁇ ) ⁇ ⁇ d ⁇ ⁇ ⁇ + K d ⁇ d ⁇ ⁇ e ⁇ ( t ) d ⁇ ⁇ t
- the first term represents the “P” (proportional) term, and is indicative of present error value(s).
- the second term represents the “I” (integral) term and accounts for past error value(s).
- the third term represents the “D” (derivative) term, and accounts for future error value(s) based on the instantaneous rate of change of the error function e(t).
- these terms allow a control system to minimize e(t) (and thus u(t)) as e(t) varies in any given system.
- Critical to this approach are the constants K p , K i , and K d , which are scaling factors for each of the terms, and which must be determined with relative precision for the feedback process to work accurately.
- scaling factors of a negative feedback control system are derived from a process of trial and error.
- Some related arts use manual tuning that requires experienced engineering personnel, while others adopt heuristic tuning methods, such as Ziegler-Nichols, Cohen-Coon and/or Astrom-Hagglund as in the case of PID controllers.
- related arts are limited by the inherent limitations of feedback mechanisms including constant scaling parameters and no tuning of the feedback control system with respect to the final application area. Therefore, the overall performance of the feedback control system may not be optimal. This is seen typically with PID controllers wherein the feedback control system does not react to changing conditions or sudden events typically seen in vehicles that are aerial, terrestrial, oceanic and/or space-based. Vehicles, in the course of various applications, typically encounter changing conditions or sudden events due to a multitude of factors, including but not limited to, weather, obstacles, turbulence, noise, decrease in fuel, low visibility, irregular terrain, and so forth.
- control system and/or method for use with a vehicle may therefore be beneficial to provide a control system and/or method for use with a vehicle that address at least one of the above issues.
- step function 302 is selectively applied to one or more untuned or incorrectly tuned PID circuits in the system while keeping each of the other PID control circuits operational.
- Some embodiments are directed to a system for use with a vehicle, the system including a plurality of control circuits for controlling an operation of the vehicle, each of the plurality of control circuits implementing one or more autopilot coefficients.
- the system further includes a sensor that is configured to detect one or more control circuits operating in an untuned or incorrectly tuned state from the plurality of control circuits; an electronic switch that is configured to isolate the one or more control circuits in the untuned or incorrectly tuned state from other control circuits; a tuning circuit that is configured to determine tuned values of the autopilot coefficients corresponding to the one or more control circuits in the untuned or incorrectly tuned state; the tuned values of the autopilot coefficients enabling the or more control circuits to operate in a tuned state; and a memory to store the tuned values of the autopilot coefficients, wherein the electronic switch is further configured to connect the one or more control circuits in the tuned state to the other control circuits.
- Some other embodiments are directed to an unmanned vehicle for use with a companion unmanned vehicle, the unmanned vehicle including a plurality of control circuits for controlling an operation of the unmanned vehicle, each of the plurality of control circuits implementing one or more autopilot coefficients.
- the unmanned vehicle further includes a sensor that is configured to detect one or more control circuits operating in an untuned or incorrectly tuned state from the plurality of control circuits; an electronic switch that is configured to isolate the one or more control circuits in the untuned or incorrectly tuned state from other control circuits; a tuning circuit that is configured to determine tuned values of the autopilot coefficients corresponding to the one or more control circuits in the untuned or incorrectly tuned state, the tuned values of the autopilot coefficients enabling the one or more control circuits to operate in a tuned state; and a memory to store the tuned values of the autopilot coefficients, wherein the electronic switch is further configured to connect the one or more control circuits in the tuned state to the other control circuits.
- Yet other embodiments are directed a method to controlling a vehicle operatively coupled to a controller, the vehicle having a plurality of control circuits, the method including detecting, by a controller, one or more control circuits operating in an untuned or incorrectly tuned state from the plurality of control circuits, each of the plurality of control circuits implementing one or more autopilot coefficients to control an operation of the vehicle; isolating, by an electronic switch, the one or more control circuits in the untuned or incorrectly tuned state from other control circuits; determining, by a tuning circuit, tuned values of the autopilot coefficients corresponding to the one or more control circuits in the untuned or incorrectly tuned state, the tuned values of the autopilot coefficients enabling the or more control circuits to operate in a tuned state; storing the tuned values of the autopilot coefficients; and connecting, by the electronic switch, the one or more control circuits in the tuned state to the other control circuits.
- FIG. 1 is a schematic of a plurality of vehicles in accordance with the disclosed subject matter.
- FIG. 2 illustrates components of one of the vehicles in accordance with the disclosed subject matter.
- FIG. 3 is a schematic illustrating the application of a step function 302 to an isolated control circuit.
- FIG. 4 is a method of controlling a vehicle having multiple control circuits in accordance with the disclosed subject matter.
- FIG. 5 is a method to determine autopilot parameters in accordance with the disclosed subject matter.
- FIG. 6 is a computer system that can be used to implement various exemplary embodiments of the disclosed subject matter.
- FIG. 1 is a schematic of a system 100 having a plurality of unmanned vehicles 102 a to 102 n (hereinafter vehicle 102 ), working in conjunction with each other.
- vehicle 102 unmanned vehicles 102 a to 102 n
- the vehicle 102 and embodiments are intended to include or otherwise cover any type of unmanned vehicle, including an unmanned aerial vehicle, an unmanned terrestrial vehicle, an unmanned space vehicle, an unmanned aquatic or oceanic vehicle, a drone, a gyrocopter etc.
- embodiments are intended to include or otherwise cover any type of unmanned vehicle that may stay geostationary in the sky and also fly at a considerable height near and/or above inspected target or region of interest.
- the vehicle 102 is merely provided for exemplary purposes, and the various inventive aspects are intended to be applied to any type of unmanned vehicle.
- the vehicle 102 and embodiments are intended to include or otherwise cover any type of optionally manned/piloted vehicle, including optionally manned/piloted vehicles operating in air (aircrafts), water, space and land (driverless cars).
- the vehicle 102 can be manually controlled by an operator present at a base station 104 . Communication between the vehicle 102 and the base station 104 may be established through a network 106 . In some other embodiments, the vehicle 102 may be autonomously controlled based on a predetermined control strategy. In yet other embodiments, the vehicle 102 may be semi-autonomously controlled, which involves an operator entering and/or selecting one or more attributes and subsequent autonomous control of the unmanned vehicles 102 based on the entered and/or selected parameters. In fact, embodiments are intended to include or otherwise cover any type of techniques, including known, related art, and/or later developed technologies to control the unmanned vehicle 102 . In yet other embodiments, the vehicles 102 may be part of a network and can communicate with each other. Systems and methods disclosed enable multiple vehicles to coordinate their operations or mission objectives with minimum interference with each other.
- the vehicles 102 can be facilitated with manual piloting/driving options along with an autopilot unit with the pilot/driver being able to view the operations of the autopilot through a display or the like. If necessary, the pilot/driver may choose to manually operate the vehicle. For example, the pilot/driver may manually operate the vehicles 102 in case of any hardware and/or software faults that may impede autonomous operation of the vehicles 102 .
- the vehicle 102 and its components can be powered by a power source to provide propulsion.
- the power source can be, but is not restricted to, a battery, a fuel cell, a photovoltaic cell, a combustion engine, fossil fuel, solar energy, and so forth.
- Embodiments are intended to include or otherwise cover any type of power source to provide power to the unmanned vehicle for its operations.
- the vehicle 102 can have various components, such as, but not restricted to, rotors, propellers, flight control surfaces etc. that control movements and/or orientation of the vehicle 102 , and the like. Embodiments are intended to include or otherwise cover any other component that may be control movements and/or orientation of the vehicle 102 .
- the unmanned vehicle 102 can also include but is not restricted to a processor, a memory, and the like.
- the processor of the unmanned vehicle 102 can be a single core processor. In alternate embodiments, the processor can be a multi-core processor.
- Embodiments are intended to include or otherwise cover any type of processor, including known, related art, and/or later developed technologies to enhance capabilities of processing data and/or instructions.
- the memory can be used to store instructions that can be processed by the processor.
- Embodiments are intended to include or otherwise cover any type of memory, including known, related art, and/or later developed technologies to enhance capabilities of storing data and/or instructions.
- the communication network 106 may include a data network such as, but not restricted to, the Internet, local area network (LAN), wide area network (WAN), metropolitan area network (MAN), etc.
- the communication network 106 can include a wireless network, such as, but not restricted to, a cellular network and may employ various technologies including enhanced data rates for global evolution (EDGE), general packet radio service (GPRS), global system for mobile communications (GSM), Internet protocol multimedia subsystem (IMS), universal mobile telecommunications system (UMTS), etc.
- EDGE enhanced data rates for global evolution
- GPRS general packet radio service
- GSM global system for mobile communications
- IMS Internet protocol multimedia subsystem
- UMTS universal mobile telecommunications system
- the communication network 106 may include or otherwise cover networks or subnetworks, each of which may include, for example, a wired or wireless data pathway.
- the communication network 106 may include a circuit-switched voice network, a packet-switched data network, or any other network capable for carrying electronic communications.
- the network may include networks based on the Internet protocol (IP) or asynchronous transfer mode (ATM), and may support voice using, for example, VoIP, Voice-over-ATM, or other comparable protocols used for voice data communications.
- IP Internet protocol
- ATM asynchronous transfer mode
- the network includes a cellular telephone network configured to enable exchange of text or SMS messages.
- Examples of the communication network 106 may include, but are not limited to, a personal area network (PAN), a storage area network (SAN), a home area network (HAN), a campus area network (CAN), a local area network (LAN), a wide area network (WAN), a metropolitan area network (MAN), a virtual private network (VPN), an enterprise private network (EPN), Internet, a global area network (GAN), and so forth.
- PAN personal area network
- SAN storage area network
- HAN home area network
- CAN campus area network
- LAN local area network
- WAN wide area network
- MAN metropolitan area network
- VPN virtual private network
- EPN enterprise private network
- Internet a global area network (GAN), and so forth.
- GAN global area network
- Embodiments are intended to include or otherwise cover any type of communication network, including known, related art, and/or later developed technologies to communicate with other vehicles 102 and/or the base station 104 .
- FIG. 2 is a schematic of the vehicle 102 with its components.
- the vehicle 102 includes an autopilot unit 202 , a sensor 204 , an actuator 208 and a communication unit 210 .
- the autopilot unit 202 further includes a plurality of control circuits 212 , a plurality of electronic switches 216 , each of which is linked to each of the control circuits 212 , a controller 214 , a tuning circuit 218 with a signal function generator, and a memory 220 .
- the controller 214 retrieves pre-stored instructions from the memory 220 to implement any preset operations of the vehicle 200 .
- the preset operations may include navigating between two known points or in a known terrain, providing automatic steering control, correcting balance of the vehicle 102 under known weather conditions or any other potential adverse conditions.
- the memory 220 may also store pre-determined conditions or autopilot parameters for various potential events that may occur during operation of the vehicle 102 .
- the autopilot unit 202 uses a plurality of control circuits 212 to maintain the course for the vehicle 102 . Additionally, the controller can also use data obtained from the sensor 204 to incorporate corrections in the overall operation of the autopilot unit.
- the senor 204 can include multiple sensor units, such as, but not limited to, an inertial measurement unit (IMU), navigation unit(s), chip(s) incorporating receivers for the Global Positioning System (GPS) and/or Global Navigation Satellite System (GNSS), heading sensor(s), pressure sensor(s), accelerometer(s), altimeter(s) and so forth.
- IMU inertial measurement unit
- GPS Global Positioning System
- GNSS Global Navigation Satellite System
- heading sensor(s) pressure sensor(s)
- accelerometer(s) accelerometer(s)
- altimeter(s) altimeter
- the autopilot unit 202 uses the plurality of control circuits 212 to provide a feedback to counteract an undesired change in roll, yaw and/or pitch of the vehicle.
- the undesired change can be detected by the sensor 204 with a detection signal.
- the sensor 204 may further communicate the detection signal coupled with data pertaining to the change to the control circuits 212 .
- the control circuits 212 generate a feedback signal for correcting the change and provide an output.
- the controller 214 directs the actuator 208 to implement the correction to correct the undesired change.
- the actuator 208 can include servo motors, stepper motors, landing gears, rudders, rotors, engine controllers, elevator servo, aileron servo, flap servo, brakes, accelerators, power controllers and the like.
- the control circuits 202 are configured to regulate a flight control surface of the vehicle 102 .
- the control circuits 212 include multiple Proportional Integral Differential (PID) controllers.
- PID controllers are directed by values of three coefficients namely K p (proportional coefficient), K i (integral coefficient) and K d (differential coefficient).
- the PID controller calculation involves the aforementioned coefficients.
- the proportional value determines the correction of current error
- the integral value determines correction for a sum of past errors
- the differential value calculates the correction for potential errors.
- the tuning circuit 218 provides the tuning for the control circuits 212 .
- the PID controller coefficients are hereinafter to be termed as the autopilot coefficients or autopilot parameters.
- the PID controllers or control circuits 212 may not use all the coefficients at one time but use sets of one or any two coefficients as part of a control strategy.
- Some applications or operations of the vehicle 102 may require only the proportional value to determine a correction.
- Other applications may require the proportional and integral values or the proportional and differential values for correction.
- applications or vehicle operations pertaining to linear motion typically require only the proportional value to determine course correction.
- all three coefficients may be required to determine correction. This is also apparent in the case of course correction in all three axes of yaw, pitch and roll.
- control circuits 212 are tuned for preset and/or pre-determined events or conditions. Furthermore, in applications that require multiple PID controllers, individual PID controllers may be selected while the vehicle is in operation to be individually tuned (or calibrated) while the remaining PID controllers are left in their normal operating state, minimizing the danger of a vehicle collision or other critical malfunction during vehicle operation. Subsequently, a newly tuned (or calibrated) PID controller may be allowed to operate in its newly tuned state while a different PID controller is selected for tuning.
- the preset tuned parameters (hereinafter termed as autopilot parameters) corresponding to specific events or conditions are stored on the memory 220 and are retrieved by the controller 214 when the sensor 204 detects the specific event and/or conditions. For example, for an aircraft or an aerial unmanned vehicle traversing a path that is subject to frequent winds in a particular direction, the sensor 204 can detect the presence of wind and initiates a control strategy to counteract the effect of the wind on the vehicle operation. The controller 214 retrieves autopilot parameters pertaining to this specific condition which is preset and applies them to the control circuits which in turn provide an error correction counteracting the wind.
- the autopilot parameters for preset conditions may be incorporated as a range of values.
- the controller 214 determines if the plurality of control circuits 212 operate in a tuned state at one or more of the preset ranges of values stored in the memory 220 .
- the tuning circuit 218 adjusts the autopilot parameters or autopilot coefficients within a predetermined range.
- One or more control circuits among the plurality of control circuits 212 can also be detected by the controller 214 and/or the tuning circuit 218 to not be operating in a tuned state when the vehicle faces unforeseen events or operation conditions resulting in a process equation not equivalent to the preset and/or predetermined parameters stored in the memory 220 .
- the controller 214 can detect one or more untuned or incorrectly tuned control circuits based on data retrieved from the sensor 204 that shows that correction incorporated by the feedback from the corresponding control circuits 212 does not counteract the error in vehicle operation.
- the tuning circuit 218 determines if the one or more control circuits corresponding to the autopilot coefficients operate in a tuned state at one or more of the adjusted values of the autopilot coefficients. Subsequently, the controller 214 isolates the untuned or incorrectly tuned control circuits by disabling the corresponding electronic switch 216 to each of the untuned or incorrectly tuned control circuit 212 .
- the control circuits 212 determined to be in the tuned state are operated by the controller 214 or can be operated manually.
- the autopilot unit 202 in such a scenario relinquishes control to the pilot.
- the pilot may control the vehicle 102 via the controller 214 .
- the pilot may be a separate control system or a human operator.
- the controller 214 directs the communication unit 210 to transmit a signal to the base station 104 enabling the base station 104 to pilot the vehicle 102 .
- the pilot may be a human pilot with the autopilot unit 202 switching to a manual mode.
- individual PID controllers are alternately selected for tuning while other control circuits 212 are maintained in their current states such that tuning can take place during vehicle operation.
- the switch 216 may be a single electronic switch connected serially to the plurality of control circuits 212 . In other embodiments, the switch 216 may be a plurality of electronic switches, each switch connected serially to each of the plurality of control circuits 212 . In yet other embodiments, the switch may be any conventional switching circuit facilitating automatic switching of one or more untuned or incorrectly tuned control circuits, the one or more untuned or incorrectly tuned control circuits being either manually programmed for tuning, or being detected by the controller 214 to be among the plurality of control circuits 212 . In case of the control circuits which are to be operated by the controller, the pilot or the base station 104 , the switch 216 is kept closed ensuring normal operation of the control circuits. The switch may be disabled for the untuned or incorrectly tuned control circuits. The switch 216 may be brought back to a neutral mode at the end of the tuning process.
- FIG. 3 illustrates the tuning of an isolated untuned or incorrectly tuned control circuit 212 A that is one of the plurality of control circuits 212 .
- Tuning mechanisms implemented can include the application of a step function 302 to the untuned or incorrectly tuned control circuit or PID controller 212 A.
- the step function 302 is generated by a tuning circuit 218 which is the same as the tuning circuit 218 .
- the tuning circuit 218 is configured to adjust at least one of duration, delays, step magnitude, step polarity, and a number of steps attributed to the step function 302 .
- the output response from the PID controller or control circuit 212 A can be further transmitted to a simulator 304 , or may be detected by any other means.
- the tuning circuit 218 can further adjust the step function 302 based on a response of the step function (say, from the simulator 304 , or by one or more sensors operating during the vehicle's operation).
- This step test allows for the determination of control parameters such as an operation gain, an operation dead time and an operation time constant attributed to the specific application or process equation. This test can also be used to determine the PID control parameters K p , K i , and K d .
- Dead time is the delay from when the output of the control circuit 212 is issued until when the controller 214 begins to respond.
- a high value of dead time may also be used by the controller 214 to detect the untuned or incorrectly tuned state of one or more control circuits among the control circuits 212 .
- the operation time constant describes the speed of response to a change detected and transmitted by the sensor 204 .
- the operation gain describes the amount of change occurring in the vehicle operation to a change attributed to unforeseen events faced by the vehicle 102 .
- established tuning methods such as Ziegler-Nichols, Cohen-Coon, Tyreus-Luyben, Astrom-Hagglund and/or dedicated software tools for tuning may be used by the controller 214 to estimate the appropriate autopilot parameters K p , K i and K d .
- the base station 104 may direct the controller to use the aforementioned tuning methods.
- manual tuning may also be implemented by a pilot.
- the simulator 304 is a set of information sets, codes and/or instructions stored on the memory 220 imitating the vehicle operation. By mimicking the vehicle operation and using the control circuit 212 A, the corresponding operation gain, operation dead time and operation time constant are determined.
- simulated results may be transmitted by the controller 214 to a display.
- the display (not shown) may be included as part of the vehicle 102 or at the base station 104 , in which case simulated results may be transmitted to the base station 104 via the communication unit 210 .
- the simulator 304 can typically reproduce the characteristics of the vehicle 102 in an environment defined by the data retrieved from the sensor 204 .
- the sensor data corresponds to the event or external conditions faced by the vehicle wherein one or more untuned or incorrectly tuned control circuits among the plurality of control circuits 212 are detected by the controller 214 . These results may also be determined directly by sensors or processors on the vehicle itself.
- Iterations of the application of the step function 302 are done to determine a range of values for the autopilot coefficients upon successful implementation in the simulator 304 and to adjust the autopilot parameters or autopilot coefficients for the operation of the vehicle 102 .
- the determined autopilot parameters or autopilot coefficients are stored in the memory 220 and retrieved when similar events or external conditions are detected by the sensor 204 and/or the controller 214 .
- FIG. 4 illustrates a method 400 to implement a tuning strategy for control the vehicle 102 in accordance with the disclosed subject matter.
- This flowchart is merely provided for exemplary purposes, and embodiments are intended to include or otherwise cover any methods or procedures for inspecting an object by using an unmanned vehicle.
- the control circuits among the plurality of control circuits 212 are detected by the controller 214 and/or the tuning circuit 218 to not operate in a tuned state when the vehicle faces unforeseen events or operation conditions.
- the controller 214 can detect one or more untuned or incorrectly tuned control circuits based on data retrieved from the sensor 204 that shows that correction incorporated by the feedback from the corresponding control circuits 212 does not counteract the error in vehicle operation.
- the tuning circuit 218 determines if the one or more control circuits corresponding to the autopilot coefficients operate in a tuned state at one or more of the adjusted values of the autopilot coefficients.
- the controller 214 isolates the untuned or incorrectly tuned control circuits 202 by disabling the corresponding electronic switch 216 to each of the untuned or incorrectly tuned control circuit 212 .
- the control circuits 212 determined to be in the tuned state, are operated by the controller 214 or can be operated manually.
- the values of autopilot parameters are determined by the application of step function 302 by the tuning circuit 218 and established tuning methods such as Ziegler-Nichols, Cohen-Coon, Tyreus-Luyben, Astrom-Hagglund and/or dedicated software tools for tuning may be used by the controller 214 to estimate the appropriate autopilot parameters K p , K i and K d .
- the tuning circuit adjusts at least duration, delays, step magnitude, step polarity and a number of steps of the step function to obtain a range of values of the autopilot coefficients.
- the determined autopilot coefficients are used to operate the untuned or incorrectly tuned control circuits 202 .
- the control circuits 202 use the determined autopilot coefficients to regulate a flight control surface of the vehicle 102 .
- the isolated control circuits are reconnected to the other control circuits 202 .
- the determined autopilot coefficients are stored in the memory 220 for future use.
- FIG. 5 is a flowchart of a method 500 for selectively applying a step function 302 to the isolated control circuit 212 A and subsequently tuning the control circuit 212 A to determine the most appropriate ranges of autopilot parameters or autopilot coefficients enabling the autopilot unit 202 to function when faced with unforeseen events during the course of the operation of vehicle 102 .
- the tuning circuit 218 applies a step function 302 to the isolated control circuit 212 A.
- the step function 302 is generated by a tuning circuit 218 which is the same as the tuning circuit 218 .
- the tuning circuit 218 is configured to adjust at least one of duration, delays, step magnitude, step polarity, and a number of steps attributed to the step function 302 .
- the output response from the PID controller or control circuit 212 A is further transmitted to a simulator 304 or other hardware or software detecting/processing elements.
- the tuning circuit 218 further adjusts the step function 302 based on response of simulator 304 . This step test allows the determination of control parameters such as operation gain, operation dead time and operation time constant. attributed to the specific application or process equation.
- the step response is applied to a simulator 304 .
- the simulator 304 is a set of information sets, codes and/or instructions stored on the memory 220 imitating the vehicle operation. The corresponding operation gain, operation dead time and operation time constant are determined during the course of simulation.
- the simulated results may be transmitted by the controller 214 to a display.
- the display (not shown) may be included as part of the vehicle or at the base station 104 , in which case simulated results may be transmitted to the base station 104 via the communication unit 210 .
- the simulator 304 typically reproduces the characteristics of the vehicle 102 in an environment defined by the data retrieved from the sensor 204 .
- the sensor data corresponds to the event or external conditions faced by the vehicle wherein one or more untuned or incorrectly tuned control circuits among the plurality of control circuits 212 are detected by the controller 214 .
- the simulated output response may be iteratively determined by feeding back changes in the step function 302 .
- the simulated output may be compared to a reference state at the base station 104 or the controller 214 .
- the autopilot coefficients are determined and appropriate adjustments are made.
- the simulated output is accepted when the error or dead time is below a tolerance value. Iterations are repeated until the values of autopilot coefficients are within a tolerance range.
- the determined autopilot coefficients are stored in the memory 220 and retrieved when similar events or external conditions are detected by the sensor 204 and/or the controller 214 .
- the switch 216 is enabled such that the isolated control circuits among the plurality of control circuits 212 function along with the other components of the vehicle 102 .
- an exemplary scenario includes a plurality of vehicles 102 working in conjunction with each other and determining the autopilot coefficients without interrupting their operation.
- the plurality of vehicles 102 may be tasked to navigate as a coordinated group along a planned trajectory.
- the memory 220 on each of the vehicles 102 is stored with data relating to the task at hand such as the past, present and future locations of each of the vehicles, the path information, locations at which a steering action is required and so forth.
- the control circuits 212 on each of the vehicles employ corrective control strategies based on the stored data corresponding to the task and data from the sensor 204 .
- the tuning circuit 218 on each of the vehicles 102 adjusts the autopilot coefficients within a pre-determined range as defined by data stored on the memory 220 . If any change sensed by the sensor 204 that corresponds to preset conditions stored on the memory 220 , the autopilot parameters are appropriately adjusted by the tuning circuit 218 to counteract the change. For example, the change can arise due to an expected turn or steering action at a specific location. The change can be detected by the sensor 204 on one or more vehicles 102 . Accordingly, the control circuits 212 on the vehicles that have detected the change employ corrective control strategies by adjusting the autopilot coefficients via the controller 214 and/or the tuning circuit 218 .
- the communication unit 210 can communicate to the rest of the vehicles 2012 and/or the base station 104 data corresponding to the change and the corrective control strategy employed. Accordingly, the rest of the vehicles 102 can determine if similar control strategies need to be employed and execute similar actions respectively or the base station 104 can direct the rest of the vehicles 102 to employ similar corrective control strategies by appropriate adjustment of autopilot parameters.
- the plurality of vehicles 102 can face unforeseen events such as turbulent weather conditions. Resultant changes are detected by the sensor 204 on each of the vehicles 102 . Alternately, the base station 104 or at least one of the plurality of vehicles 102 can detect an unforeseen event and communicate corresponding data or information to the rest of the plurality of vehicles 102 . In accordance with the disclosed subject matter, the detection of an unforeseen event can also occur due to the dead time, control gain and/or time constant deviating from a permissible or tolerable range of values. Subsequently, the controller 214 disables the switches 216 of one or more control circuits 212 that are out of tune with the desired autopilot coefficients. The rest of the control circuits may operate normally and can be remotely operated by the base station 104 or the controller 214 or a human pilot such that the vehicles 102 are on course.
- a step function 302 is applied to the one or more untuned or incorrectly tuned control circuits 212 with disabled switches 216 by the tuning circuit 218 .
- the tuning circuit 218 is configured to adjust at least one of duration, delays, step magnitude, step polarity, and a number of steps attributed to the step function 302 .
- the output response from the PID controller or control circuit 212 A is further transmitted to a simulator 304 .
- the tuning circuit 218 further adjusts the step function 302 based on response of simulator 304 . This step test allows the determination of control parameters such as an operation gain, an operation dead time and an operation time constant attributed to the specific application or process equation.
- established tuning methods such as Ziegler-Nichols, Cohen-Coon, Tyreus-Luyben, Astrom-Hagglund and/or dedicated software tools for tuning may be used by the controller 214 to estimate the appropriate autopilot parameters K p , K i and K d .
- the base station 104 may direct the controller 214 to use the aforementioned tuning methods.
- manual tuning may also be implemented by a pilot.
- the determined autopilot parameters or autopilot coefficients are stored in the memory 220 and retrieved when similar events or external conditions are detected by the sensor 204 and/or the controller 214 .
- the isolated control circuits 212 resume operation.
- the new values may be communicated to other vehicles 102 via the communication unit 210 .
- the other vehicles 102 may undergo similar tuning processes to maintain the combined course of the plurality of vehicles 102 .
- FIG. 6 illustrates a computer system 600 upon which the operation of the controller 214 , tuning circuit 218 , control circuits 212 and switch 216 may be implemented.
- the computer system 600 is depicted with respect to a particular device or equipment, it is contemplated that other devices or equipment (e.g., network elements, servers, etc.) within FIG. 6 can deploy the illustrated hardware and components of system.
- the computer system 600 is programmed (e.g., via computer program code or instructions) to inspect the objects by using one or more vehicles described herein and includes a communication mechanism such as a bus 602 for passing information between other internal and external components of the computer system 600 .
- Information is represented as a physical expression of a measurable phenomenon, typically electric voltages, but including, in other embodiments, such phenomena as magnetic, electromagnetic, pressure, chemical, biological, molecular, atomic, sub-atomic and quantum interactions.
- a measurable phenomenon typically electric voltages, but including, in other embodiments, such phenomena as magnetic, electromagnetic, pressure, chemical, biological, molecular, atomic, sub-atomic and quantum interactions.
- north and south magnetic fields, or a zero and non-zero electric voltage represent two states (0, 1) of a binary digit (bit).
- Other phenomena can represent digits of a higher base.
- a superposition of multiple simultaneous quantum states before measurement represents a quantum bit (qubit).
- a sequence of one or more digits constitutes digital data that is used to represent a number or code for a character.
- information called analog data is represented by a near continuum of measurable values within a particular range.
- the computer system 600 or a portion thereof, constitutes a means for performing one or more steps for inspecting the objects
- a bus 602 includes one or more parallel conductors of information so that information is transferred quickly among devices coupled to the bus 602 .
- One or more processors 604 for processing information are coupled with the bus 602 .
- the processor (or multiple processors) 604 performs a set of operations on information as specified by computer program code related to inspect the objects by using one or more vehicles.
- the computer program code is a set of instructions or statements providing instructions for the operation of the processor 604 and/or the computer system 600 to perform specified functions.
- the code for example, may be written in a computer programming language that is compiled into a native instruction set of the processor 604 .
- the code may also be written directly using the native instruction set (e.g., machine language).
- the set of operations include bringing information in from the bus 602 and placing information on the bus 602 .
- the set of operations also typically include comparing two or more units of information, shifting positions of units of information, and combining two or more units of information, such as by addition or multiplication or logical operations like OR, exclusive OR (XOR), and AND.
- Each operation of the set of operations that can be performed by the processor is represented to the processor by information called instructions, such as an operation code of one or more digits.
- a sequence of operations to be executed by the processor 604 such as a sequence of operation codes, constitute processor instructions, also called computer system instructions or, simply, computer instructions.
- the processors 604 may be implemented as mechanical, electrical, magnetic, optical, chemical, or quantum components, among others, alone or in combination.
- the computer system 600 also includes a memory 606 coupled to the bus 602 .
- the memory 606 such as a Random Access Memory (RAM) or any other dynamic storage device, stores information including processor instructions for storing information and instructions to be executed by the processor 604 .
- the dynamic memory 606 allows information stored therein to be changed by the computer system 600 .
- RAM allows a unit of information stored at a location called a memory address to be stored and retrieved independently of information at neighboring addresses.
- the memory 606 is also used by the processor 604 to store temporary values during execution of processor instructions.
- the computer system 600 also includes a Read Only Memory (ROM) or any other static storage device coupled to the bus 602 for storing static information, including instructions, that is not changed by the computer system 600 .
- ROM Read Only Memory
- Non-volatile (persistent) storage device 608 such as a magnetic disk, a solid state disk, optical disk or flash card, for storing information, including instructions, that persists even when the computer system 600 is turned off or otherwise loses power.
- Information including instructions for inspecting the objects by using one or more vehicles is provided to the bus 602 for use by the processor 604 from an external input device 610 , such as a keyboard containing alphanumeric keys operated by a human user, a microphone, an Infrared (IR) remote control, a joystick, a game pad, a stylus pen, a touch screen, or a sensor.
- IR Infrared
- the sensor detects conditions in its vicinity and transforms those detections into physical expression compatible with the measurable phenomenon used to represent information in the computer system 600 .
- a display 612 such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, an organic LED (OLED) display, active matrix display, Electrophoretic Display (EPD), a plasma screen, or a printer for presenting text or images; a pointing device 617 , such as a mouse, a trackball, cursor direction keys, or a motion sensor, for controlling a position of a small cursor image presented on the display 612 and issuing commands associated with graphical elements presented on the display 612 ; and one or more camera sensors 614 for capturing, recording and causing to store one or more still and/or moving images (e.g., videos, movies, etc.) which also may comprise audio recordings.
- CTR Cathode Ray Tube
- LCD Liquid Crystal Display
- LED Light Emitting Diode
- OLED Organic LED
- EPD Electrophoretic Display
- a plasma screen or a printer for presenting text or images
- the display 612 may be a touch enabled display such as capacitive or resistive screen.
- the display 612 may be omitted.
- special purpose hardware such as an ASIC 616
- the special purpose hardware is configured to perform operations not performed by the processor 604 quickly enough for special purposes.
- ASICs include graphics accelerator cards for generating images for the display 612 , cryptographic boards for encrypting and decrypting messages sent over a network, speech recognition, and interfaces to special external devices, such as robotic arms and medical scanning equipment that repeatedly perform some complex sequence of operations that are more efficiently implemented in hardware.
- the computer system 600 also includes one or more instances of a communication interface 618 coupled to the bus 602 .
- the communication interface 618 provides a one-way or two-way communication coupling to a variety of external devices that operate with their own processors, such as printers, scanners and external disks.
- the coupling is with a network link 620 that is connected to a local network 622 to which a variety of external devices with their own processors are connected.
- the communication interface 618 may be a parallel port or a serial port or a Universal Serial Bus (USB) port on a personal computer.
- USB Universal Serial Bus
- the communication interface 618 is an Integrated Services Digital Network (ISDN) card, a Digital Subscriber Line (DSL) card, or a telephone modem that provides an information communication connection to a corresponding type of a telephone line.
- ISDN Integrated Services Digital Network
- DSL Digital Subscriber Line
- the communication interface 618 is a cable modem that converts signals on the bus 602 into signals for a communication connection over a coaxial cable or into optical signals for a communication connection over a fiber optic cable.
- the communications interface 618 may be a Local Area Network (LAN) card to provide a data communication connection to a compatible LAN, such as EthernetTM or an Asynchronous Transfer Mode (ATM) network.
- LAN Local Area Network
- ATM Asynchronous Transfer Mode
- wireless links may also be implemented.
- the communication interface 618 sends or receives or both sends and receives electrical, acoustic or electromagnetic signals, including infrared and optical signals that carry information streams, such as digital data.
- the communication interface 618 includes a radio band electromagnetic transmitter and receiver called a radio transceiver.
- the communication interface 618 enables connection to the communication network 622 for inspecting the objects by using one or more vehicles.
- the communication interface 618 can include peripheral interface devices, such as a thunderbolt interface, a Personal Computer Memory Card International Association (PCMCIA) interface, etc.
- PCMCIA Personal Computer Memory Card International Association
- Non-transitory media such as non-volatile media, include, for example, optical or magnetic disks, such as the storage device 608 .
- Volatile media include, for example, the dynamic memory 606 .
- Transmission media include, for example, twisted pair cables, coaxial cables, copper wire, fiber optic cables, and carrier waves that travel through space without wires or cables, such as acoustic waves, optical or electromagnetic waves, including radio, optical and infrared waves.
- Signals include man-made transient variations in amplitude, frequency, phase, polarization or other physical properties transmitted through the transmission media.
- Common forms of computer-readable media include, for example, a floppy disk, a flexible disk, hard disk, magnetic tape, any other magnetic medium, a USB flash drive, a Blu-ray disk, a CD-ROM, CDRW, DVD, any other optical medium, punch cards, paper tape, optical mark sheets, any other physical medium with patterns of holes or other optically recognizable indicia, a RAM, a PROM, an EPROM, a FLASH-EPROM, an EEPROM, a flash memory, any other memory chip or cartridge, a carrier wave, or any other medium from which a computer can read.
- the term computer-readable storage medium is used herein to refer to any computer-readable medium except transmission media.
- Logic encoded in one or more tangible media includes one or both of processor instructions on a computer-readable storage media and special purpose hardware, such as ASIC 616 .
- the network link 620 typically provides information communication using transmission media through one or more networks to other devices that use or process the information.
- the network link 620 may provide a connection through the local network 622 to a host computer 624 or to ISP equipment operated by an Internet Service Provider (ISP).
- ISP Internet Service Provider
- a computer called a server host 626 connected to the Internet, hosts a process that provides a service in response to information received over the Internet.
- the server 626 hosts a process that provides information representing video data for presentation at the display 612 . It is contemplated that the components of the computer system 600 can be deployed in various configurations within other computer systems, e.g., the host 624 and the server 626 .
- At least some embodiments of the invention are related to the use of the computer system 600 for implementing some or all of the techniques described herein. According to one embodiment of the invention, those techniques are performed by the computer system 600 in response to the processor 604 executing one or more sequences of one or more processor instructions contained in the memory 606 . Such instructions, also called computer instructions, software and program code, may be read into the memory 606 from another computer-readable medium such as the storage device 608 or the network link 620 . Execution of the sequences of instructions contained in the memory 606 causes the processor 604 to perform one or more of the method steps described herein. In alternative embodiments, hardware, such as the ASIC 616 , may be used in place of or in combination with software to implement the invention. Thus, embodiments of the invention are not limited to any specific combination of hardware and software, unless otherwise explicitly stated herein.
- instructions and data may initially be carried on a magnetic disk of a remote computer such as the host 624 .
- the remote computer loads the instructions and data into its dynamic memory and sends the instructions and data over a telephone line using a modem.
- a modem local to the computer system 600 receives the instructions and data on a telephone line and uses an infra-red transmitter to convert the instructions and data to a signal on an infra-red carrier wave serving as the network link 620 .
- An infrared detector serving as the communication interface 618 receives the instructions and data carried in the infrared signal and places information representing the instructions and data onto the bus 602 .
- the bus 602 carries the information to the memory 606 from which the processor 604 retrieves and executes the instructions using some of the data sent with the instructions.
- the instructions and data received in the memory 606 may optionally be stored on the storage device 608 , either before or after execution by the processor 604 .
- FIGS. 1 to 6 disclose the best mode for practicing the various inventive aspects. It should be understood that the invention can be embodied and configured in many different ways without departing from the scope of the invention.
- Embodiments are disclosed above in the context of a vehicle and/or a group of vehicles. However, embodiments are intended to include or otherwise cover any type of vehicle including aircrafts, cars, ships, unmanned vehicle, gyrocopter, drone, optionally manned vehicle etc.
- the vehicles 102 can be used to achieve a mission objective.
- the vehicles 102 can also operate as a type of satellite (relaying data to and from communications equipment) to assess data rate transmission and thereby assess performance, damage, etc., of the communications equipment.
- Unmanned vehicle groups can use electronic assessments to selectively transmit/receive signals from different members of the swarm to perform precise directional analysis of signals,
- Unmanned vehicles and vehicle groups can use electronic assessments to detect nonlinear signals, such as are produced in response to electronically pinging a nonlinear device (cell phone, laptop, router, walkie-talkie, etc.).
- Unmanned vehicles and vehicle swarms can use electronic assessments to detect changes in the atmosphere (such as the 60 GHz H 2 O resonant frequency) to perform atmospheric analysis (i.e., ozone levels, pollution, glacial melting, organic growth (forest depletion), etc.). These devices are often used in the detonation of improvised explosive devices (IEDs).
- IEDs improvised explosive devices
- Preset data is used to initialize operations and upon detection of any unforeseen events during the course of the mission, control strategy is manipulated by the tuning methods as disclosed by the embodiments of the invention described in previous sections.
- New control parameters for untuned or incorrectly tuned control circuits are determined after isolating the untuned or incorrectly tuned control circuits and applying a step function 302 to these control circuits.
- the output response is transmitted to a simulator replicating the environment pertaining to the application or mission objective.
- a simulated environment is replicated by the use of retrieved data from sensors and the memory. This is done to simulate the unforeseen events during the course of the mission objective.
- Exemplary embodiments are also intended to cover any additional or alternative components of the vehicle disclosed above. Exemplary embodiments are further intended to cover omission of any component of the vehicle disclosed above.
- Exemplary embodiments are also intended to include and/or otherwise a v-formation of a fleet of unmanned vehicles, which can cause each of the unmanned vehicles to be well separated.
- embodiments of the disclosed subject matter are intended to include or otherwise cover any type of formation that may be beneficial.
- Exemplary embodiments are also intended to include and/or otherwise use aircrafts with dedicated autopilot systems.
- the aircraft can be autonomously piloted using the autopilot system, the manual mode activated upon detection of untuned or incorrectly tuned control circuits.
- the untuned or incorrectly tuned control circuits are separated from the normal operation and are subject to a step response along with a tuning method (Ziegler-Nichols, Ziegler-Nichols, Cohen-Coon, Tyreus-Luyben, Astrom-Hagglund and/or dedicated software tools for tuning).
- Upon determination of appropriate autopilot parameters or autopilot coefficients the autopilot system returns to normal operation.
- Such a process offers dynamic tuning of the control circuits 212 with minimal system failure or break in vehicle operation.
- the autopilot unit 202 is made adaptable.
- Embodiments are also intended to include or otherwise cover methods of manufacturing the vehicle disclosed above.
- the methods of manufacturing include or otherwise cover processors and computer programs implemented by processors used to design various elements of the vehicle disclosed above.
- Exemplary embodiments are intended to cover all software or computer programs capable of enabling processors to implement the above operations, designs and determinations. Exemplary embodiments are also intended to cover any and all currently known, related art or later developed non-transitory recording or storage mediums (such as a CD-ROM, DVD-ROM, hard drive, RAM, ROM, floppy disc, magnetic tape cassette, etc.) that record or store such software or computer programs. Exemplary embodiments are further intended to cover such software, computer programs, systems and/or processes provided through any other currently known, related art, or later developed medium (such as transitory mediums, carrier waves, etc.), usable for implementing the exemplary operations of airbag housing assemblies disclosed above.
- non-transitory recording or storage mediums such as a CD-ROM, DVD-ROM, hard drive, RAM, ROM, floppy disc, magnetic tape cassette, etc.
- Exemplary embodiments are further intended to cover such software, computer programs, systems and/or processes provided through any other currently known, related art, or later developed medium (such as transitory
- the disclosed computer programs can be executed in many exemplary ways, such as an application that is resident in the memory of a device or as a hosted application that is being executed on a server and communicating with the device application or browser via a number of standard protocols, such as TCP/IP, HTTP, XML, SOAP, REST, JSON and other sufficient protocols.
- the disclosed computer programs can be written in exemplary programming languages that execute from memory on the device or from a hosted server, such as BASIC, COBOL, C, C++, Java, Pascal, or scripting languages such as JavaScript, Python, Ruby, PHP, Perl or other sufficient programming languages.
- the network may include, for example, one or more of the Internet, Wide Area Networks (WANs), Local Area Networks (LANs), analog or digital wired and wireless telephone networks (e.g., a PSTN, Integrated Services Digital Network (ISDN), a cellular network, and Digital Subscriber Line (xDSL)), radio, television, cable, satellite, and/or any other delivery or tunneling mechanism for carrying data.
- WANs Wide Area Networks
- LANs Local Area Networks
- analog or digital wired and wireless telephone networks e.g., a PSTN, Integrated Services Digital Network (ISDN), a cellular network, and Digital Subscriber Line (xDSL)
- PSTN Public Switchetelecommunication Services Digital Network
- ISDN Integrated Services Digital Network
- xDSL Digital Subscriber Line
- Network may include multiple networks or subnetworks, each of which may include, for example, a wired or wireless data pathway.
- the network may include a circuit-switched voice network, a packet-switched data network, or any other
- the network may include networks based on the Internet protocol (IP) or asynchronous transfer mode (ATM), and may support voice using, for example, VoIP, Voice-over-ATM, or other comparable protocols used for voice data communications.
- IP Internet protocol
- ATM asynchronous transfer mode
- the network includes a cellular telephone network configured to enable exchange of text or SMS messages.
- Examples of a network include, but are not limited to, a personal area network (PAN), a storage area network (SAN), a home area network (HAN), a campus area network (CAN), a local area network (LAN), a wide area network (WAN), a metropolitan area network (MAN), a virtual private network (VPN), an enterprise private network (EPN), Internet, a global area network (GAN), and so forth.
- PAN personal area network
- SAN storage area network
- HAN home area network
- CAN campus area network
- LAN local area network
- WAN wide area network
- MAN metropolitan area network
- VPN virtual private network
- EPN enterprise private network
- GAN global area network
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Abstract
Some embodiments are directed to a system for use with a vehicle, the system including control circuits for controlling an operation of the vehicle, each of the control circuits implementing autopilot coefficients. The system further includes a sensor that is configured to detect control circuits operating in an untuned or incorrectly tuned state from the control circuits; an electronic switch that is configured to isolate the control circuits in the untuned or incorrectly tuned state from other control circuits; a tuning circuit that is configured to determine tuned values of the autopilot coefficients corresponding to the control circuits in the untuned or incorrectly tuned state; the tuned values of the autopilot coefficients enabling the control circuits to operate in a tuned state; and a memory to store the tuned values of the autopilot coefficients, wherein the electronic switch is further configured to connect the control circuits in the tuned state to the other control circuits.
Description
- This Application claims priority to provisional Application 62/291,344 filed on Feb. 4, 2016. The substance of Application 62/291,344 is hereby incorporated in its entirety into this Application.
- The disclosed subject matter relates to vehicles, systems and methods for autopilot operation of vehicles. In particular, the disclosed subject matter relates to vehicles, systems and methods for determining autopilot parameters for vehicles. These vehicles may be unmanned vehicles, optionally manned vehicles, aerial vehicles, terrestrial vehicles such as cars or all-terrain vehicles, aquatic or oceanic vehicles such as boats or submarines, or space vehicles.
- In any or all of these vehicles, it is often customary to employ an autopilot feature to assume control of the vehicle. Such a control may be used in conjunction with an operator or pilot, or can even be used in fully autonomous or unmanned vehicles.
- Control systems facilitating autopilot features are generally negative feedback-based, in that the autopilot system senses an undesired change in an aspect of the vehicle's motion, and applies a negative feedback signal to a vehicle controller to counteract the undesired (positive) change. For example, an aircraft facing an unexpected ascension due to an air current is controlled by steering the vehicle slightly downwards to maintain a constant altitude.
- Some related arts use one or more Proportional Integral Differential (PID) control loops to control one or more aspects of a vehicle's operation. In this schema, three PID terms (P, I, and D) are summed to arrive at an overall calculated response u(t) for the system in which an error term e(t) is desired to be minimized. In some systems, this approach can be represented as:
-
- The first term represents the “P” (proportional) term, and is indicative of present error value(s). The second term represents the “I” (integral) term and accounts for past error value(s). The third term represents the “D” (derivative) term, and accounts for future error value(s) based on the instantaneous rate of change of the error function e(t). Together, these terms allow a control system to minimize e(t) (and thus u(t)) as e(t) varies in any given system. Critical to this approach, however, are the constants Kp, Ki, and Kd, which are scaling factors for each of the terms, and which must be determined with relative precision for the feedback process to work accurately.
- Typically, scaling factors of a negative feedback control system, such as a PID controller, are derived from a process of trial and error. Some related arts use manual tuning that requires experienced engineering personnel, while others adopt heuristic tuning methods, such as Ziegler-Nichols, Cohen-Coon and/or Astrom-Hagglund as in the case of PID controllers. However, related arts are limited by the inherent limitations of feedback mechanisms including constant scaling parameters and no tuning of the feedback control system with respect to the final application area. Therefore, the overall performance of the feedback control system may not be optimal. This is seen typically with PID controllers wherein the feedback control system does not react to changing conditions or sudden events typically seen in vehicles that are aerial, terrestrial, oceanic and/or space-based. Vehicles, in the course of various applications, typically encounter changing conditions or sudden events due to a multitude of factors, including but not limited to, weather, obstacles, turbulence, noise, decrease in fuel, low visibility, irregular terrain, and so forth.
- It may therefore be beneficial to provide a control system and/or method for use with a vehicle that address at least one of the above issues. For example, it may be beneficial to provide a control system facilitating an autopilot feature in a vehicle that operates with minimal system failures.
- It may also be beneficial to provide control system and/or method for use with a vehicle wherein a
step function 302 is selectively applied to one or more untuned or incorrectly tuned PID circuits in the system while keeping each of the other PID control circuits operational. - Some embodiments are directed to a system for use with a vehicle, the system including a plurality of control circuits for controlling an operation of the vehicle, each of the plurality of control circuits implementing one or more autopilot coefficients. The system further includes a sensor that is configured to detect one or more control circuits operating in an untuned or incorrectly tuned state from the plurality of control circuits; an electronic switch that is configured to isolate the one or more control circuits in the untuned or incorrectly tuned state from other control circuits; a tuning circuit that is configured to determine tuned values of the autopilot coefficients corresponding to the one or more control circuits in the untuned or incorrectly tuned state; the tuned values of the autopilot coefficients enabling the or more control circuits to operate in a tuned state; and a memory to store the tuned values of the autopilot coefficients, wherein the electronic switch is further configured to connect the one or more control circuits in the tuned state to the other control circuits.
- Some other embodiments are directed to an unmanned vehicle for use with a companion unmanned vehicle, the unmanned vehicle including a plurality of control circuits for controlling an operation of the unmanned vehicle, each of the plurality of control circuits implementing one or more autopilot coefficients. The unmanned vehicle further includes a sensor that is configured to detect one or more control circuits operating in an untuned or incorrectly tuned state from the plurality of control circuits; an electronic switch that is configured to isolate the one or more control circuits in the untuned or incorrectly tuned state from other control circuits; a tuning circuit that is configured to determine tuned values of the autopilot coefficients corresponding to the one or more control circuits in the untuned or incorrectly tuned state, the tuned values of the autopilot coefficients enabling the one or more control circuits to operate in a tuned state; and a memory to store the tuned values of the autopilot coefficients, wherein the electronic switch is further configured to connect the one or more control circuits in the tuned state to the other control circuits.
- Yet other embodiments are directed a method to controlling a vehicle operatively coupled to a controller, the vehicle having a plurality of control circuits, the method including detecting, by a controller, one or more control circuits operating in an untuned or incorrectly tuned state from the plurality of control circuits, each of the plurality of control circuits implementing one or more autopilot coefficients to control an operation of the vehicle; isolating, by an electronic switch, the one or more control circuits in the untuned or incorrectly tuned state from other control circuits; determining, by a tuning circuit, tuned values of the autopilot coefficients corresponding to the one or more control circuits in the untuned or incorrectly tuned state, the tuned values of the autopilot coefficients enabling the or more control circuits to operate in a tuned state; storing the tuned values of the autopilot coefficients; and connecting, by the electronic switch, the one or more control circuits in the tuned state to the other control circuits.
- The foregoing and other aspects of the embodiments disclosed herein are best understood from the following detailed description when read in connection with the accompanying drawings. For the purpose of illustrating the embodiments disclosed herein, there is shown in the drawings embodiments that are presently preferred, it being understood, however, that the embodiments disclosed herein are not limited to the specific instrumentalities disclosed. Included in the drawings are the following figures:
-
FIG. 1 is a schematic of a plurality of vehicles in accordance with the disclosed subject matter. -
FIG. 2 illustrates components of one of the vehicles in accordance with the disclosed subject matter. -
FIG. 3 is a schematic illustrating the application of astep function 302 to an isolated control circuit. -
FIG. 4 is a method of controlling a vehicle having multiple control circuits in accordance with the disclosed subject matter. -
FIG. 5 is a method to determine autopilot parameters in accordance with the disclosed subject matter. -
FIG. 6 is a computer system that can be used to implement various exemplary embodiments of the disclosed subject matter. - A few inventive aspects of the disclosed embodiments are explained in detail below with reference to the various figures. Exemplary embodiments are described to illustrate the disclosed subject matter, not to limit its scope, which is defined by the claims. Those of ordinary skill in the art will recognize a number of equivalent variations of the various features provided in the description that follows.
-
FIG. 1 is a schematic of asystem 100 having a plurality ofunmanned vehicles 102 a to 102 n (hereinafter vehicle 102), working in conjunction with each other. - The vehicle 102, and embodiments are intended to include or otherwise cover any type of unmanned vehicle, including an unmanned aerial vehicle, an unmanned terrestrial vehicle, an unmanned space vehicle, an unmanned aquatic or oceanic vehicle, a drone, a gyrocopter etc. In fact, embodiments are intended to include or otherwise cover any type of unmanned vehicle that may stay geostationary in the sky and also fly at a considerable height near and/or above inspected target or region of interest. The vehicle 102 is merely provided for exemplary purposes, and the various inventive aspects are intended to be applied to any type of unmanned vehicle. In other embodiments, the vehicle 102 and embodiments are intended to include or otherwise cover any type of optionally manned/piloted vehicle, including optionally manned/piloted vehicles operating in air (aircrafts), water, space and land (driverless cars).
- In some embodiments, the vehicle 102 can be manually controlled by an operator present at a
base station 104. Communication between the vehicle 102 and thebase station 104 may be established through anetwork 106. In some other embodiments, the vehicle 102 may be autonomously controlled based on a predetermined control strategy. In yet other embodiments, the vehicle 102 may be semi-autonomously controlled, which involves an operator entering and/or selecting one or more attributes and subsequent autonomous control of the unmanned vehicles 102 based on the entered and/or selected parameters. In fact, embodiments are intended to include or otherwise cover any type of techniques, including known, related art, and/or later developed technologies to control the unmanned vehicle 102. In yet other embodiments, the vehicles 102 may be part of a network and can communicate with each other. Systems and methods disclosed enable multiple vehicles to coordinate their operations or mission objectives with minimum interference with each other. - In some embodiments, the vehicles 102 can be facilitated with manual piloting/driving options along with an autopilot unit with the pilot/driver being able to view the operations of the autopilot through a display or the like. If necessary, the pilot/driver may choose to manually operate the vehicle. For example, the pilot/driver may manually operate the vehicles 102 in case of any hardware and/or software faults that may impede autonomous operation of the vehicles 102.
- For operating purposes, the vehicle 102 and its components (not shown) can be powered by a power source to provide propulsion. The power source can be, but is not restricted to, a battery, a fuel cell, a photovoltaic cell, a combustion engine, fossil fuel, solar energy, and so forth. Embodiments are intended to include or otherwise cover any type of power source to provide power to the unmanned vehicle for its operations.
- In some embodiments, the vehicle 102 can have various components, such as, but not restricted to, rotors, propellers, flight control surfaces etc. that control movements and/or orientation of the vehicle 102, and the like. Embodiments are intended to include or otherwise cover any other component that may be control movements and/or orientation of the vehicle 102.
- Further, in some embodiments, the unmanned vehicle 102 can also include but is not restricted to a processor, a memory, and the like. In some embodiments, the processor of the unmanned vehicle 102 can be a single core processor. In alternate embodiments, the processor can be a multi-core processor. Embodiments are intended to include or otherwise cover any type of processor, including known, related art, and/or later developed technologies to enhance capabilities of processing data and/or instructions. The memory can be used to store instructions that can be processed by the processor. Embodiments are intended to include or otherwise cover any type of memory, including known, related art, and/or later developed technologies to enhance capabilities of storing data and/or instructions.
- In some other embodiments, the
communication network 106 may include a data network such as, but not restricted to, the Internet, local area network (LAN), wide area network (WAN), metropolitan area network (MAN), etc. In certain embodiments, thecommunication network 106 can include a wireless network, such as, but not restricted to, a cellular network and may employ various technologies including enhanced data rates for global evolution (EDGE), general packet radio service (GPRS), global system for mobile communications (GSM), Internet protocol multimedia subsystem (IMS), universal mobile telecommunications system (UMTS), etc. In some embodiments, thecommunication network 106 may include or otherwise cover networks or subnetworks, each of which may include, for example, a wired or wireless data pathway. Thecommunication network 106 may include a circuit-switched voice network, a packet-switched data network, or any other network capable for carrying electronic communications. For example, the network may include networks based on the Internet protocol (IP) or asynchronous transfer mode (ATM), and may support voice using, for example, VoIP, Voice-over-ATM, or other comparable protocols used for voice data communications. In one implementation, the network includes a cellular telephone network configured to enable exchange of text or SMS messages. - Examples of the
communication network 106 may include, but are not limited to, a personal area network (PAN), a storage area network (SAN), a home area network (HAN), a campus area network (CAN), a local area network (LAN), a wide area network (WAN), a metropolitan area network (MAN), a virtual private network (VPN), an enterprise private network (EPN), Internet, a global area network (GAN), and so forth. Embodiments are intended to include or otherwise cover any type of communication network, including known, related art, and/or later developed technologies to communicate with other vehicles 102 and/or thebase station 104. -
FIG. 2 is a schematic of the vehicle 102 with its components. The vehicle 102 includes anautopilot unit 202, asensor 204, anactuator 208 and acommunication unit 210. Theautopilot unit 202 further includes a plurality ofcontrol circuits 212, a plurality ofelectronic switches 216, each of which is linked to each of thecontrol circuits 212, acontroller 214, atuning circuit 218 with a signal function generator, and amemory 220. - In some embodiments, the
controller 214 retrieves pre-stored instructions from thememory 220 to implement any preset operations of thevehicle 200. The preset operations may include navigating between two known points or in a known terrain, providing automatic steering control, correcting balance of the vehicle 102 under known weather conditions or any other potential adverse conditions. Thememory 220 may also store pre-determined conditions or autopilot parameters for various potential events that may occur during operation of the vehicle 102. Theautopilot unit 202 uses a plurality ofcontrol circuits 212 to maintain the course for the vehicle 102. Additionally, the controller can also use data obtained from thesensor 204 to incorporate corrections in the overall operation of the autopilot unit. In some embodiments, thesensor 204 can include multiple sensor units, such as, but not limited to, an inertial measurement unit (IMU), navigation unit(s), chip(s) incorporating receivers for the Global Positioning System (GPS) and/or Global Navigation Satellite System (GNSS), heading sensor(s), pressure sensor(s), accelerometer(s), altimeter(s) and so forth. - In an example, the
autopilot unit 202 uses the plurality ofcontrol circuits 212 to provide a feedback to counteract an undesired change in roll, yaw and/or pitch of the vehicle. The undesired change can be detected by thesensor 204 with a detection signal. Thesensor 204 may further communicate the detection signal coupled with data pertaining to the change to thecontrol circuits 212. Subsequently, thecontrol circuits 212 generate a feedback signal for correcting the change and provide an output. Thecontroller 214 directs theactuator 208 to implement the correction to correct the undesired change. In some embodiments, theactuator 208 can include servo motors, stepper motors, landing gears, rudders, rotors, engine controllers, elevator servo, aileron servo, flap servo, brakes, accelerators, power controllers and the like. In some embodiments, thecontrol circuits 202 are configured to regulate a flight control surface of the vehicle 102. - In some embodiments, the
control circuits 212 include multiple Proportional Integral Differential (PID) controllers. Typically, PID controllers are directed by values of three coefficients namely Kp (proportional coefficient), Ki (integral coefficient) and Kd (differential coefficient). The PID controller calculation involves the aforementioned coefficients. The proportional value determines the correction of current error, the integral value determines correction for a sum of past errors, and the differential value calculates the correction for potential errors. By tuning the PID controllers, i.e., estimating the value of the three coefficients, the PID controllers can provide course corrections for specific errors or for specific events occurring during the operation of the vehicle. Thetuning circuit 218 provides the tuning for thecontrol circuits 212. The PID controller coefficients are hereinafter to be termed as the autopilot coefficients or autopilot parameters. - In some embodiments, the PID controllers or
control circuits 212 may not use all the coefficients at one time but use sets of one or any two coefficients as part of a control strategy. Some applications or operations of the vehicle 102 may require only the proportional value to determine a correction. Other applications may require the proportional and integral values or the proportional and differential values for correction. For example, applications or vehicle operations pertaining to linear motion typically require only the proportional value to determine course correction. In case of aerial vehicles facing turbulent weather conditions, all three coefficients may be required to determine correction. This is also apparent in the case of course correction in all three axes of yaw, pitch and roll. - In some embodiments, the
control circuits 212 are tuned for preset and/or pre-determined events or conditions. Furthermore, in applications that require multiple PID controllers, individual PID controllers may be selected while the vehicle is in operation to be individually tuned (or calibrated) while the remaining PID controllers are left in their normal operating state, minimizing the danger of a vehicle collision or other critical malfunction during vehicle operation. Subsequently, a newly tuned (or calibrated) PID controller may be allowed to operate in its newly tuned state while a different PID controller is selected for tuning. - The preset tuned parameters (hereinafter termed as autopilot parameters) corresponding to specific events or conditions are stored on the
memory 220 and are retrieved by thecontroller 214 when thesensor 204 detects the specific event and/or conditions. For example, for an aircraft or an aerial unmanned vehicle traversing a path that is subject to frequent winds in a particular direction, thesensor 204 can detect the presence of wind and initiates a control strategy to counteract the effect of the wind on the vehicle operation. Thecontroller 214 retrieves autopilot parameters pertaining to this specific condition which is preset and applies them to the control circuits which in turn provide an error correction counteracting the wind. - In some embodiments, the autopilot parameters for preset conditions may be incorporated as a range of values. The
controller 214 determines if the plurality ofcontrol circuits 212 operate in a tuned state at one or more of the preset ranges of values stored in thememory 220. In some embodiments, thetuning circuit 218 adjusts the autopilot parameters or autopilot coefficients within a predetermined range. - One or more control circuits among the plurality of
control circuits 212 can also be detected by thecontroller 214 and/or thetuning circuit 218 to not be operating in a tuned state when the vehicle faces unforeseen events or operation conditions resulting in a process equation not equivalent to the preset and/or predetermined parameters stored in thememory 220. In some embodiments, thecontroller 214 can detect one or more untuned or incorrectly tuned control circuits based on data retrieved from thesensor 204 that shows that correction incorporated by the feedback from thecorresponding control circuits 212 does not counteract the error in vehicle operation. In yet other embodiments, thetuning circuit 218 determines if the one or more control circuits corresponding to the autopilot coefficients operate in a tuned state at one or more of the adjusted values of the autopilot coefficients. Subsequently, thecontroller 214 isolates the untuned or incorrectly tuned control circuits by disabling the correspondingelectronic switch 216 to each of the untuned or incorrectly tunedcontrol circuit 212. Thecontrol circuits 212 determined to be in the tuned state, are operated by thecontroller 214 or can be operated manually. Theautopilot unit 202 in such a scenario relinquishes control to the pilot. In some embodiments, the pilot may control the vehicle 102 via thecontroller 214. The pilot may be a separate control system or a human operator. In other embodiments, thecontroller 214 directs thecommunication unit 210 to transmit a signal to thebase station 104 enabling thebase station 104 to pilot the vehicle 102. In yet another embodiment, the pilot may be a human pilot with theautopilot unit 202 switching to a manual mode. In some embodiments, that require multiple PID controllers, individual PID controllers are alternately selected for tuning whileother control circuits 212 are maintained in their current states such that tuning can take place during vehicle operation. - In some embodiments, the
switch 216 may be a single electronic switch connected serially to the plurality ofcontrol circuits 212. In other embodiments, theswitch 216 may be a plurality of electronic switches, each switch connected serially to each of the plurality ofcontrol circuits 212. In yet other embodiments, the switch may be any conventional switching circuit facilitating automatic switching of one or more untuned or incorrectly tuned control circuits, the one or more untuned or incorrectly tuned control circuits being either manually programmed for tuning, or being detected by thecontroller 214 to be among the plurality ofcontrol circuits 212. In case of the control circuits which are to be operated by the controller, the pilot or thebase station 104, theswitch 216 is kept closed ensuring normal operation of the control circuits. The switch may be disabled for the untuned or incorrectly tuned control circuits. Theswitch 216 may be brought back to a neutral mode at the end of the tuning process. -
FIG. 3 illustrates the tuning of an isolated untuned or incorrectly tunedcontrol circuit 212A that is one of the plurality ofcontrol circuits 212. - Tuning mechanisms implemented can include the application of a
step function 302 to the untuned or incorrectly tuned control circuit orPID controller 212A. Thestep function 302 is generated by atuning circuit 218 which is the same as thetuning circuit 218. Thetuning circuit 218 is configured to adjust at least one of duration, delays, step magnitude, step polarity, and a number of steps attributed to thestep function 302. The output response from the PID controller orcontrol circuit 212A can be further transmitted to asimulator 304, or may be detected by any other means. Thetuning circuit 218 can further adjust thestep function 302 based on a response of the step function (say, from thesimulator 304, or by one or more sensors operating during the vehicle's operation). This step test allows for the determination of control parameters such as an operation gain, an operation dead time and an operation time constant attributed to the specific application or process equation. This test can also be used to determine the PID control parameters Kp, Ki, and Kd. - Dead time is the delay from when the output of the
control circuit 212 is issued until when thecontroller 214 begins to respond. In some embodiments, a high value of dead time may also be used by thecontroller 214 to detect the untuned or incorrectly tuned state of one or more control circuits among thecontrol circuits 212. The operation time constant describes the speed of response to a change detected and transmitted by thesensor 204. The operation gain describes the amount of change occurring in the vehicle operation to a change attributed to unforeseen events faced by the vehicle 102. Upon determination of these values from the step response, established tuning methods such as Ziegler-Nichols, Cohen-Coon, Tyreus-Luyben, Astrom-Hagglund and/or dedicated software tools for tuning may be used by thecontroller 214 to estimate the appropriate autopilot parameters Kp, Ki and Kd. In some embodiments, thebase station 104 may direct the controller to use the aforementioned tuning methods. In yet another embodiment, upon determination of these values, manual tuning may also be implemented by a pilot. - In
FIG. 3 , thesimulator 304 is a set of information sets, codes and/or instructions stored on thememory 220 imitating the vehicle operation. By mimicking the vehicle operation and using thecontrol circuit 212A, the corresponding operation gain, operation dead time and operation time constant are determined. In some embodiments, simulated results may be transmitted by thecontroller 214 to a display. The display (not shown) may be included as part of the vehicle 102 or at thebase station 104, in which case simulated results may be transmitted to thebase station 104 via thecommunication unit 210. Thesimulator 304 can typically reproduce the characteristics of the vehicle 102 in an environment defined by the data retrieved from thesensor 204. The sensor data corresponds to the event or external conditions faced by the vehicle wherein one or more untuned or incorrectly tuned control circuits among the plurality ofcontrol circuits 212 are detected by thecontroller 214. These results may also be determined directly by sensors or processors on the vehicle itself. - Iterations of the application of the
step function 302 are done to determine a range of values for the autopilot coefficients upon successful implementation in thesimulator 304 and to adjust the autopilot parameters or autopilot coefficients for the operation of the vehicle 102. The determined autopilot parameters or autopilot coefficients are stored in thememory 220 and retrieved when similar events or external conditions are detected by thesensor 204 and/or thecontroller 214. -
FIG. 4 illustrates amethod 400 to implement a tuning strategy for control the vehicle 102 in accordance with the disclosed subject matter. This flowchart is merely provided for exemplary purposes, and embodiments are intended to include or otherwise cover any methods or procedures for inspecting an object by using an unmanned vehicle. - In accordance with the flowchart of
FIG. 4 , atstep 402, the control circuits among the plurality ofcontrol circuits 212 are detected by thecontroller 214 and/or thetuning circuit 218 to not operate in a tuned state when the vehicle faces unforeseen events or operation conditions. In some embodiments, thecontroller 214 can detect one or more untuned or incorrectly tuned control circuits based on data retrieved from thesensor 204 that shows that correction incorporated by the feedback from thecorresponding control circuits 212 does not counteract the error in vehicle operation. In yet other embodiments, thetuning circuit 218 determines if the one or more control circuits corresponding to the autopilot coefficients operate in a tuned state at one or more of the adjusted values of the autopilot coefficients. - At
step 404, thecontroller 214 isolates the untuned or incorrectly tunedcontrol circuits 202 by disabling the correspondingelectronic switch 216 to each of the untuned or incorrectly tunedcontrol circuit 212. Thecontrol circuits 212 determined to be in the tuned state, are operated by thecontroller 214 or can be operated manually. - At
step 406, the values of autopilot parameters are determined by the application ofstep function 302 by thetuning circuit 218 and established tuning methods such as Ziegler-Nichols, Cohen-Coon, Tyreus-Luyben, Astrom-Hagglund and/or dedicated software tools for tuning may be used by thecontroller 214 to estimate the appropriate autopilot parameters Kp, Ki and Kd. Over multiple iterations, the tuning circuit adjusts at least duration, delays, step magnitude, step polarity and a number of steps of the step function to obtain a range of values of the autopilot coefficients. - At
step 408, the determined autopilot coefficients are used to operate the untuned or incorrectly tunedcontrol circuits 202. In some embodiments, thecontrol circuits 202 use the determined autopilot coefficients to regulate a flight control surface of the vehicle 102. - At
step 410, the isolated control circuits are reconnected to theother control circuits 202. The determined autopilot coefficients are stored in thememory 220 for future use. -
FIG. 5 is a flowchart of amethod 500 for selectively applying astep function 302 to theisolated control circuit 212A and subsequently tuning thecontrol circuit 212A to determine the most appropriate ranges of autopilot parameters or autopilot coefficients enabling theautopilot unit 202 to function when faced with unforeseen events during the course of the operation of vehicle 102. - In accordance with the flowchart of
FIG. 5 , themethod 500 of tuning an isolated untuned or incorrectly tunedcontrol circuit 212A that is one of the plurality ofcontrol circuits 212 is described. Atstep 502, thetuning circuit 218 applies astep function 302 to theisolated control circuit 212A. Thestep function 302 is generated by atuning circuit 218 which is the same as thetuning circuit 218. Thetuning circuit 218 is configured to adjust at least one of duration, delays, step magnitude, step polarity, and a number of steps attributed to thestep function 302. The output response from the PID controller orcontrol circuit 212A is further transmitted to asimulator 304 or other hardware or software detecting/processing elements. Thetuning circuit 218 further adjusts thestep function 302 based on response ofsimulator 304. This step test allows the determination of control parameters such as operation gain, operation dead time and operation time constant. attributed to the specific application or process equation. - At
step 504, the step response is applied to asimulator 304. Thesimulator 304 is a set of information sets, codes and/or instructions stored on thememory 220 imitating the vehicle operation. The corresponding operation gain, operation dead time and operation time constant are determined during the course of simulation. In some embodiments, the simulated results may be transmitted by thecontroller 214 to a display. The display (not shown) may be included as part of the vehicle or at thebase station 104, in which case simulated results may be transmitted to thebase station 104 via thecommunication unit 210. Thesimulator 304 typically reproduces the characteristics of the vehicle 102 in an environment defined by the data retrieved from thesensor 204. The sensor data corresponds to the event or external conditions faced by the vehicle wherein one or more untuned or incorrectly tuned control circuits among the plurality ofcontrol circuits 212 are detected by thecontroller 214. The simulated output response may be iteratively determined by feeding back changes in thestep function 302. In some embodiments, the simulated output may be compared to a reference state at thebase station 104 or thecontroller 214. - At
step 506, the autopilot coefficients are determined and appropriate adjustments are made. The simulated output is accepted when the error or dead time is below a tolerance value. Iterations are repeated until the values of autopilot coefficients are within a tolerance range. - At
step 510, the determined autopilot coefficients are stored in thememory 220 and retrieved when similar events or external conditions are detected by thesensor 204 and/or thecontroller 214. - At
step 512, theswitch 216 is enabled such that the isolated control circuits among the plurality ofcontrol circuits 212 function along with the other components of the vehicle 102. - In accordance with disclosed subject matter, an exemplary scenario includes a plurality of vehicles 102 working in conjunction with each other and determining the autopilot coefficients without interrupting their operation. The plurality of vehicles 102 may be tasked to navigate as a coordinated group along a planned trajectory. The
memory 220 on each of the vehicles 102 is stored with data relating to the task at hand such as the past, present and future locations of each of the vehicles, the path information, locations at which a steering action is required and so forth. Thecontrol circuits 212 on each of the vehicles employ corrective control strategies based on the stored data corresponding to the task and data from thesensor 204. Accordingly, thetuning circuit 218 on each of the vehicles 102 adjusts the autopilot coefficients within a pre-determined range as defined by data stored on thememory 220. If any change sensed by thesensor 204 that corresponds to preset conditions stored on thememory 220, the autopilot parameters are appropriately adjusted by thetuning circuit 218 to counteract the change. For example, the change can arise due to an expected turn or steering action at a specific location. The change can be detected by thesensor 204 on one or more vehicles 102. Accordingly, thecontrol circuits 212 on the vehicles that have detected the change employ corrective control strategies by adjusting the autopilot coefficients via thecontroller 214 and/or thetuning circuit 218. Thecommunication unit 210 can communicate to the rest of the vehicles 2012 and/or thebase station 104 data corresponding to the change and the corrective control strategy employed. Accordingly, the rest of the vehicles 102 can determine if similar control strategies need to be employed and execute similar actions respectively or thebase station 104 can direct the rest of the vehicles 102 to employ similar corrective control strategies by appropriate adjustment of autopilot parameters. - The plurality of vehicles 102 can face unforeseen events such as turbulent weather conditions. Resultant changes are detected by the
sensor 204 on each of the vehicles 102. Alternately, thebase station 104 or at least one of the plurality of vehicles 102 can detect an unforeseen event and communicate corresponding data or information to the rest of the plurality of vehicles 102. In accordance with the disclosed subject matter, the detection of an unforeseen event can also occur due to the dead time, control gain and/or time constant deviating from a permissible or tolerable range of values. Subsequently, thecontroller 214 disables theswitches 216 of one ormore control circuits 212 that are out of tune with the desired autopilot coefficients. The rest of the control circuits may operate normally and can be remotely operated by thebase station 104 or thecontroller 214 or a human pilot such that the vehicles 102 are on course. - A
step function 302 is applied to the one or more untuned or incorrectly tunedcontrol circuits 212 withdisabled switches 216 by thetuning circuit 218. Thetuning circuit 218 is configured to adjust at least one of duration, delays, step magnitude, step polarity, and a number of steps attributed to thestep function 302. The output response from the PID controller orcontrol circuit 212A is further transmitted to asimulator 304. Thetuning circuit 218 further adjusts thestep function 302 based on response ofsimulator 304. This step test allows the determination of control parameters such as an operation gain, an operation dead time and an operation time constant attributed to the specific application or process equation. Upon determination of these values from the step response, established tuning methods such as Ziegler-Nichols, Cohen-Coon, Tyreus-Luyben, Astrom-Hagglund and/or dedicated software tools for tuning may be used by thecontroller 214 to estimate the appropriate autopilot parameters Kp, Ki and Kd. In some embodiments, thebase station 104 may direct thecontroller 214 to use the aforementioned tuning methods. In yet another embodiment, upon determination of these values, manual tuning may also be implemented by a pilot. The determined autopilot parameters or autopilot coefficients are stored in thememory 220 and retrieved when similar events or external conditions are detected by thesensor 204 and/or thecontroller 214. - Subsequently, upon determination and storing of the autopilot parameters, the
isolated control circuits 212 resume operation. The new values may be communicated to other vehicles 102 via thecommunication unit 210. Based on the new values of autopilot coefficients, the other vehicles 102 may undergo similar tuning processes to maintain the combined course of the plurality of vehicles 102. -
FIG. 6 illustrates acomputer system 600 upon which the operation of thecontroller 214, tuningcircuit 218,control circuits 212 and switch 216 may be implemented. Although, thecomputer system 600 is depicted with respect to a particular device or equipment, it is contemplated that other devices or equipment (e.g., network elements, servers, etc.) withinFIG. 6 can deploy the illustrated hardware and components of system. Thecomputer system 600 is programmed (e.g., via computer program code or instructions) to inspect the objects by using one or more vehicles described herein and includes a communication mechanism such as abus 602 for passing information between other internal and external components of thecomputer system 600. Information (also called data) is represented as a physical expression of a measurable phenomenon, typically electric voltages, but including, in other embodiments, such phenomena as magnetic, electromagnetic, pressure, chemical, biological, molecular, atomic, sub-atomic and quantum interactions. For example, north and south magnetic fields, or a zero and non-zero electric voltage, represent two states (0, 1) of a binary digit (bit). Other phenomena can represent digits of a higher base. A superposition of multiple simultaneous quantum states before measurement represents a quantum bit (qubit). A sequence of one or more digits constitutes digital data that is used to represent a number or code for a character. In some embodiments, information called analog data is represented by a near continuum of measurable values within a particular range. Thecomputer system 600, or a portion thereof, constitutes a means for performing one or more steps for inspecting the objects by using one or more vehicles. - A
bus 602 includes one or more parallel conductors of information so that information is transferred quickly among devices coupled to thebus 602. One ormore processors 604 for processing information are coupled with thebus 602. - The processor (or multiple processors) 604 performs a set of operations on information as specified by computer program code related to inspect the objects by using one or more vehicles. The computer program code is a set of instructions or statements providing instructions for the operation of the
processor 604 and/or thecomputer system 600 to perform specified functions. The code, for example, may be written in a computer programming language that is compiled into a native instruction set of theprocessor 604. The code may also be written directly using the native instruction set (e.g., machine language). The set of operations include bringing information in from thebus 602 and placing information on thebus 602. The set of operations also typically include comparing two or more units of information, shifting positions of units of information, and combining two or more units of information, such as by addition or multiplication or logical operations like OR, exclusive OR (XOR), and AND. Each operation of the set of operations that can be performed by the processor is represented to the processor by information called instructions, such as an operation code of one or more digits. A sequence of operations to be executed by theprocessor 604, such as a sequence of operation codes, constitute processor instructions, also called computer system instructions or, simply, computer instructions. Theprocessors 604 may be implemented as mechanical, electrical, magnetic, optical, chemical, or quantum components, among others, alone or in combination. - The
computer system 600 also includes amemory 606 coupled to thebus 602. Thememory 606, such as a Random Access Memory (RAM) or any other dynamic storage device, stores information including processor instructions for storing information and instructions to be executed by theprocessor 604. Thedynamic memory 606 allows information stored therein to be changed by thecomputer system 600. RAM allows a unit of information stored at a location called a memory address to be stored and retrieved independently of information at neighboring addresses. Thememory 606 is also used by theprocessor 604 to store temporary values during execution of processor instructions. Thecomputer system 600 also includes a Read Only Memory (ROM) or any other static storage device coupled to thebus 602 for storing static information, including instructions, that is not changed by thecomputer system 600. Some memory is composed of volatile storage that loses the information stored thereon when power is lost. Also coupled to thebus 602 is a non-volatile (persistent)storage device 608, such as a magnetic disk, a solid state disk, optical disk or flash card, for storing information, including instructions, that persists even when thecomputer system 600 is turned off or otherwise loses power. - Information, including instructions for inspecting the objects by using one or more vehicles is provided to the
bus 602 for use by theprocessor 604 from anexternal input device 610, such as a keyboard containing alphanumeric keys operated by a human user, a microphone, an Infrared (IR) remote control, a joystick, a game pad, a stylus pen, a touch screen, or a sensor. The sensor detects conditions in its vicinity and transforms those detections into physical expression compatible with the measurable phenomenon used to represent information in thecomputer system 600. Other external devices coupled to thebus 602, used primarily for interacting with humans, include adisplay 612, such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, an organic LED (OLED) display, active matrix display, Electrophoretic Display (EPD), a plasma screen, or a printer for presenting text or images; apointing device 617, such as a mouse, a trackball, cursor direction keys, or a motion sensor, for controlling a position of a small cursor image presented on thedisplay 612 and issuing commands associated with graphical elements presented on thedisplay 612; and one ormore camera sensors 614 for capturing, recording and causing to store one or more still and/or moving images (e.g., videos, movies, etc.) which also may comprise audio recordings. Further, thedisplay 612 may be a touch enabled display such as capacitive or resistive screen. In some embodiments, for example, in embodiments in which thecomputer system 600 performs all functions automatically without human input, one or more of theexternal input device 610, and thedisplay device 612 may be omitted. - In the illustrated embodiment, special purpose hardware, such as an
ASIC 616, is coupled to thebus 602. The special purpose hardware is configured to perform operations not performed by theprocessor 604 quickly enough for special purposes. Examples of ASICs include graphics accelerator cards for generating images for thedisplay 612, cryptographic boards for encrypting and decrypting messages sent over a network, speech recognition, and interfaces to special external devices, such as robotic arms and medical scanning equipment that repeatedly perform some complex sequence of operations that are more efficiently implemented in hardware. - The
computer system 600 also includes one or more instances of acommunication interface 618 coupled to thebus 602. Thecommunication interface 618 provides a one-way or two-way communication coupling to a variety of external devices that operate with their own processors, such as printers, scanners and external disks. In general, the coupling is with anetwork link 620 that is connected to alocal network 622 to which a variety of external devices with their own processors are connected. For example, thecommunication interface 618 may be a parallel port or a serial port or a Universal Serial Bus (USB) port on a personal computer. In some embodiments, thecommunication interface 618 is an Integrated Services Digital Network (ISDN) card, a Digital Subscriber Line (DSL) card, or a telephone modem that provides an information communication connection to a corresponding type of a telephone line. In some embodiments, thecommunication interface 618 is a cable modem that converts signals on thebus 602 into signals for a communication connection over a coaxial cable or into optical signals for a communication connection over a fiber optic cable. As another example, thecommunications interface 618 may be a Local Area Network (LAN) card to provide a data communication connection to a compatible LAN, such as Ethernet™ or an Asynchronous Transfer Mode (ATM) network. In one embodiment, wireless links may also be implemented. For wireless links, thecommunication interface 618 sends or receives or both sends and receives electrical, acoustic or electromagnetic signals, including infrared and optical signals that carry information streams, such as digital data. For example, in wireless handheld devices, such as mobile telephones like cell phones, thecommunication interface 618 includes a radio band electromagnetic transmitter and receiver called a radio transceiver. In certain embodiments, thecommunication interface 618 enables connection to thecommunication network 622 for inspecting the objects by using one or more vehicles. Further, thecommunication interface 618 can include peripheral interface devices, such as a thunderbolt interface, a Personal Computer Memory Card International Association (PCMCIA) interface, etc. Although asingle communication interface 618 is depicted, multiple communication interfaces can also be employed. - The term “computer-readable medium” as used herein refers to any medium that participates in providing information to the
processor 604, including instructions for execution. Such a medium may take many forms, including, but not limited to, computer-readable storage medium (e.g., non-volatile media, volatile media), and transmission media. Non-transitory media, such as non-volatile media, include, for example, optical or magnetic disks, such as thestorage device 608. Volatile media include, for example, thedynamic memory 606. Transmission media include, for example, twisted pair cables, coaxial cables, copper wire, fiber optic cables, and carrier waves that travel through space without wires or cables, such as acoustic waves, optical or electromagnetic waves, including radio, optical and infrared waves. Signals include man-made transient variations in amplitude, frequency, phase, polarization or other physical properties transmitted through the transmission media. Common forms of computer-readable media include, for example, a floppy disk, a flexible disk, hard disk, magnetic tape, any other magnetic medium, a USB flash drive, a Blu-ray disk, a CD-ROM, CDRW, DVD, any other optical medium, punch cards, paper tape, optical mark sheets, any other physical medium with patterns of holes or other optically recognizable indicia, a RAM, a PROM, an EPROM, a FLASH-EPROM, an EEPROM, a flash memory, any other memory chip or cartridge, a carrier wave, or any other medium from which a computer can read. The term computer-readable storage medium is used herein to refer to any computer-readable medium except transmission media. - Logic encoded in one or more tangible media includes one or both of processor instructions on a computer-readable storage media and special purpose hardware, such as
ASIC 616. - The
network link 620 typically provides information communication using transmission media through one or more networks to other devices that use or process the information. For example, thenetwork link 620 may provide a connection through thelocal network 622 to ahost computer 624 or to ISP equipment operated by an Internet Service Provider (ISP). - A computer called a
server host 626, connected to the Internet, hosts a process that provides a service in response to information received over the Internet. For example, theserver 626 hosts a process that provides information representing video data for presentation at thedisplay 612. It is contemplated that the components of thecomputer system 600 can be deployed in various configurations within other computer systems, e.g., thehost 624 and theserver 626. - At least some embodiments of the invention are related to the use of the
computer system 600 for implementing some or all of the techniques described herein. According to one embodiment of the invention, those techniques are performed by thecomputer system 600 in response to theprocessor 604 executing one or more sequences of one or more processor instructions contained in thememory 606. Such instructions, also called computer instructions, software and program code, may be read into thememory 606 from another computer-readable medium such as thestorage device 608 or thenetwork link 620. Execution of the sequences of instructions contained in thememory 606 causes theprocessor 604 to perform one or more of the method steps described herein. In alternative embodiments, hardware, such as theASIC 616, may be used in place of or in combination with software to implement the invention. Thus, embodiments of the invention are not limited to any specific combination of hardware and software, unless otherwise explicitly stated herein. - Various forms of computer readable media may be involved in carrying one or more sequence of instructions or data or both to the
processor 604 for execution. For example, instructions and data may initially be carried on a magnetic disk of a remote computer such as thehost 624. The remote computer loads the instructions and data into its dynamic memory and sends the instructions and data over a telephone line using a modem. A modem local to thecomputer system 600 receives the instructions and data on a telephone line and uses an infra-red transmitter to convert the instructions and data to a signal on an infra-red carrier wave serving as thenetwork link 620. An infrared detector serving as thecommunication interface 618 receives the instructions and data carried in the infrared signal and places information representing the instructions and data onto thebus 602. Thebus 602 carries the information to thememory 606 from which theprocessor 604 retrieves and executes the instructions using some of the data sent with the instructions. The instructions and data received in thememory 606 may optionally be stored on thestorage device 608, either before or after execution by theprocessor 604. - While certain embodiments of the invention are described above, and
FIGS. 1 to 6 disclose the best mode for practicing the various inventive aspects. It should be understood that the invention can be embodied and configured in many different ways without departing from the scope of the invention. - Embodiments are disclosed above in the context of a vehicle and/or a group of vehicles. However, embodiments are intended to include or otherwise cover any type of vehicle including aircrafts, cars, ships, unmanned vehicle, gyrocopter, drone, optionally manned vehicle etc.
- The vehicles 102 can be used to achieve a mission objective. For example, the vehicles 102 can also operate as a type of satellite (relaying data to and from communications equipment) to assess data rate transmission and thereby assess performance, damage, etc., of the communications equipment. Unmanned vehicle groups can use electronic assessments to selectively transmit/receive signals from different members of the swarm to perform precise directional analysis of signals,
- Unmanned vehicles and vehicle groups can use electronic assessments to detect nonlinear signals, such as are produced in response to electronically pinging a nonlinear device (cell phone, laptop, router, walkie-talkie, etc.). Unmanned vehicles and vehicle swarms can use electronic assessments to detect changes in the atmosphere (such as the 60 GHz H2O resonant frequency) to perform atmospheric analysis (i.e., ozone levels, pollution, glacial melting, organic growth (forest depletion), etc.). These devices are often used in the detonation of improvised explosive devices (IEDs). In each of the aforementioned applications, control strategies can be implemented to achieve the mission objectives. Preset data is used to initialize operations and upon detection of any unforeseen events during the course of the mission, control strategy is manipulated by the tuning methods as disclosed by the embodiments of the invention described in previous sections. New control parameters for untuned or incorrectly tuned control circuits are determined after isolating the untuned or incorrectly tuned control circuits and applying a
step function 302 to these control circuits. The output response is transmitted to a simulator replicating the environment pertaining to the application or mission objective. A simulated environment is replicated by the use of retrieved data from sensors and the memory. This is done to simulate the unforeseen events during the course of the mission objective. - Exemplary embodiments are also intended to cover any additional or alternative components of the vehicle disclosed above. Exemplary embodiments are further intended to cover omission of any component of the vehicle disclosed above.
- Exemplary embodiments are also intended to include and/or otherwise a v-formation of a fleet of unmanned vehicles, which can cause each of the unmanned vehicles to be well separated. However, embodiments of the disclosed subject matter are intended to include or otherwise cover any type of formation that may be beneficial.
- Exemplary embodiments are also intended to include and/or otherwise use aircrafts with dedicated autopilot systems. The aircraft can be autonomously piloted using the autopilot system, the manual mode activated upon detection of untuned or incorrectly tuned control circuits. The untuned or incorrectly tuned control circuits are separated from the normal operation and are subject to a step response along with a tuning method (Ziegler-Nichols, Ziegler-Nichols, Cohen-Coon, Tyreus-Luyben, Astrom-Hagglund and/or dedicated software tools for tuning). Upon determination of appropriate autopilot parameters or autopilot coefficients, the autopilot system returns to normal operation. Such a process offers dynamic tuning of the
control circuits 212 with minimal system failure or break in vehicle operation. By storing and retrieving the determined autopilot coefficients, theautopilot unit 202 is made adaptable. - Embodiments are also intended to include or otherwise cover methods of manufacturing the vehicle disclosed above. The methods of manufacturing include or otherwise cover processors and computer programs implemented by processors used to design various elements of the vehicle disclosed above.
- Exemplary embodiments are intended to cover all software or computer programs capable of enabling processors to implement the above operations, designs and determinations. Exemplary embodiments are also intended to cover any and all currently known, related art or later developed non-transitory recording or storage mediums (such as a CD-ROM, DVD-ROM, hard drive, RAM, ROM, floppy disc, magnetic tape cassette, etc.) that record or store such software or computer programs. Exemplary embodiments are further intended to cover such software, computer programs, systems and/or processes provided through any other currently known, related art, or later developed medium (such as transitory mediums, carrier waves, etc.), usable for implementing the exemplary operations of airbag housing assemblies disclosed above.
- In accordance with the exemplary embodiments, the disclosed computer programs can be executed in many exemplary ways, such as an application that is resident in the memory of a device or as a hosted application that is being executed on a server and communicating with the device application or browser via a number of standard protocols, such as TCP/IP, HTTP, XML, SOAP, REST, JSON and other sufficient protocols. The disclosed computer programs can be written in exemplary programming languages that execute from memory on the device or from a hosted server, such as BASIC, COBOL, C, C++, Java, Pascal, or scripting languages such as JavaScript, Python, Ruby, PHP, Perl or other sufficient programming languages.
- Some of the disclosed embodiments include or otherwise involve data transfer over a network, such as communicating various inputs over the network. The network may include, for example, one or more of the Internet, Wide Area Networks (WANs), Local Area Networks (LANs), analog or digital wired and wireless telephone networks (e.g., a PSTN, Integrated Services Digital Network (ISDN), a cellular network, and Digital Subscriber Line (xDSL)), radio, television, cable, satellite, and/or any other delivery or tunneling mechanism for carrying data. Network may include multiple networks or subnetworks, each of which may include, for example, a wired or wireless data pathway. The network may include a circuit-switched voice network, a packet-switched data network, or any other network able to carry electronic communications. For example, the network may include networks based on the Internet protocol (IP) or asynchronous transfer mode (ATM), and may support voice using, for example, VoIP, Voice-over-ATM, or other comparable protocols used for voice data communications. In one implementation, the network includes a cellular telephone network configured to enable exchange of text or SMS messages.
- Examples of a network include, but are not limited to, a personal area network (PAN), a storage area network (SAN), a home area network (HAN), a campus area network (CAN), a local area network (LAN), a wide area network (WAN), a metropolitan area network (MAN), a virtual private network (VPN), an enterprise private network (EPN), Internet, a global area network (GAN), and so forth.
- While the subject matter has been described in detail with reference to exemplary embodiments thereof, it will be apparent to one skilled in the art that various changes can be made, and equivalents employed, without departing from the scope of the invention. All related art references discussed in the above Background section are hereby incorporated by reference in their entirety.
Claims (20)
1. A system for use with a vehicle, comprising:
a plurality of control circuits for controlling an operation of the vehicle, each of the plurality of control circuits implementing one or more autopilot coefficients;
a first controller that is configured to tune one or more control circuits of the plurality of control circuits operating in an untuned or incorrectly tuned state;
an electronic switch that is configured to isolate the one or more control circuits in the untuned or incorrectly tuned state from other control circuits;
a tuning circuit that is configured to determine tuned values of the autopilot coefficients corresponding to the one or more control circuits in the untuned or incorrectly tuned state, the tuned values of the autopilot coefficients enabling at least one of the control circuits to operate in a tuned state;
a memory that is configured to store the tuned values of the autopilot coefficients;
an autopilot unit being formed by the plurality of control circuits, and at least one of the electronic switch, the tuning circuit, the first controller, and the memory;
a sensor connected to the autopilot unit for communicating with the autopilot unit; and
an actuator connected to the autopilot unit for receiving correctional directions from the autopilot unit;
wherein the electronic switch is further configured to connect the one or more control circuits in the tuned state, which were initially operating in the incorrectly tuned state, to the other control circuits,
wherein each of the plurality of control circuits is a Proportional Integral Derivative (PID) controller, wherein the autopilot coefficients, which correspond to each of the plurality of control circuits, are PID coefficients, and wherein the PID controller is a separate element than the first controller.
2. (canceled)
3. The system of claim 1 , wherein the tuning circuit sets is further configured to adjust values of each of the autopilot coefficients within a predetermined range; and
determine if the one or more control circuits corresponding to the autopilot coefficients operate in a tuned state at one or more of the adjusted values of the autopilot coefficients.
4. The system of claim 3 , wherein the tuning circuit is further configured to:
apply a step function to the one or more control circuits operating in the untuned or incorrectly tuned state; and
monitor outputs of the one or more control circuits, which operate in the unturned or incorrectly tuned state, correspond to the adjusted values of the autopilot coefficients.
5. The system of claim 4 , wherein the tuning circuit is further configured to adjust at least one of duration, delays, step magnitude, step polarity, and a number of steps of the step function.
6. The system of claim 1 , wherein the controller is further configured to operate the other control circuits during tuning of the one or more control circuits operating in the untuned or incorrectly tuned state.
7. The system of claim 1 , wherein at least one of the control circuits of the plurality of control circuits is configured to regulate a flight control surface of the vehicle.
8. A method for controlling a vehicle operatively coupled to a controller with the vehicle including a plurality of control circuits, the method comprising:
detecting, by a first controller, that one or more control circuits are operating in an untuned or incorrectly tuned state from the plurality of control circuits, each of the plurality of control circuits implementing one or more autopilot coefficients to control an operation of the vehicle;
isolating, by an electronic switch, the one or more control circuits in the untuned or incorrectly tuned state from other control circuits;
determining, by a tuning circuit, tuned values of the autopilot coefficients corresponding to the one or more control circuits in the untuned or incorrectly tuned state, the tuned values of the autopilot coefficients enabling the one or more control circuits to operate in a tuned state;
storing, in a memory, the tuned values of the autopilot coefficients; and
connecting, by the electronic switch, the one or more control circuits in the tuned state, which were initially operating in the incorrectly tuned state, to the other control circuits,
wherein each of the plurality of control circuits is a Proportional Integral Derivative (PID) controller, wherein the autopilot coefficients, which correspond to each of the plurality of control circuits, are PID coefficients, and wherein the PID controller is a separate element than the first controller.
9. The method of claim 8 , further comprising adjusting, by the tuning circuit, values of each of the autopilot coefficients within a predetermined range; and
determining, by the tuning circuit, if the one or more control circuits corresponding to the autopilot coefficients operate in a tuned state at one or more of the adjusted values of the autopilot coefficients.
10. The method of claim 9 , further comprising:
applying, by the tuning circuit, a step function to the one or more control circuits operating in the untuned or incorrectly tuned state; and
monitoring, by the tuning circuit, outputs of the one or more control circuits, which operate in the untuned or incorrectly tuned state, correspond to the adjusted values of the autopilot coefficients.
11. The method of claim 10 , further comprising adjusting, by the tuning circuit, at least one duration, delays, step magnitude, step polarity, and a number of steps of the step function.
12. The method of claim 8 , further comprising operating, by the controller, the other control circuits during tuning of the one or more control circuits operating in the untuned or incorrectly tuned state.
13. The method of claim 8 , further comprising controlling, by at least one control circuit of the plurality of control circuits, a flight control surface of the vehicle.
14. An unmanned vehicle comprising:
a plurality of control circuits for controlling an operation of the unmanned vehicle, each of the plurality of control circuits implementing one or more autopilot coefficients;
a first controller that is configured to tune one or more control circuits operating in an untuned or incorrectly tuned state from the plurality of control circuits;
an electronic switch that is configured to isolate the one or more control circuits in the untuned or incorrectly tuned state from other control circuits;
a tuning circuit that is configured to determine tuned values of the autopilot coefficients corresponding to the one or more control circuits in the untuned or incorrectly tuned state, the tuned values of the autopilot coefficients enabling the or more control circuits to operate in a tuned state; and
a memory that is configured to store the tuned values of the autopilot coefficients;
wherein the electronic switch is further configured to connect the one or more control circuits in the tuned state, which were initially operating in the incorrectly tuned state, to the other control circuits,
wherein each of the plurality of control circuits is a Proportional Integral Derivative (PID) controller, wherein the autopilot coefficients, which correspond to each of the plurality of control circuits, are PID coefficients, and wherein the PID controller is a separate element than the first controller.
15. (canceled)
16. The unmanned vehicle of claim 14 , wherein the tuning circuit is further configured to:
adjust values of each of the autopilot coefficients within a predetermined range; and
determine if the one or more control circuits corresponding to the autopilot coefficients operate in a tuned state at one or more of the adjusted values of the autopilot coefficients.
17. The unmanned vehicle of claim 16 , wherein the tuning circuit is further configured to apply a step function to the one or more control circuits operating in the untuned or incorrectly tuned state; and
monitor outputs of the one or more control circuits, which operate in the untuned or incorrectly tuned state, correspond to the adjusted values of the autopilot coefficients.
18. The unmanned vehicle of claim 17 , wherein the tuning circuit is further configured to adjust at least one duration, delays, step magnitude, step polarity, and a number of steps of the step function.
19. The unmanned vehicle of claim 14 , wherein the unmanned vehicle further comprises a communication unit that is configured to communicate with at least one of another unmanned vehicle and a base station.
20. The unmanned vehicle of claim 19 , wherein a controller of at least one of the another unmanned vehicle and the base station is configured to control the other control circuits of the another unmanned vehicle during tuning of the one or more control circuits operating in the untuned or incorrectly tuned state.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160274937A1 (en) * | 2013-10-25 | 2016-09-22 | Toyota Jidosha Kabushiki Kaisha | Control device |
US10108194B1 (en) * | 2016-09-02 | 2018-10-23 | X Development Llc | Object placement verification |
US20180375530A1 (en) * | 2017-06-23 | 2018-12-27 | Intel Corporation | Self-configuring error control coding |
CN109507871A (en) * | 2018-12-11 | 2019-03-22 | 广东工业大学 | Pid parameter setting method and product for the control of two-wheeled balance car car body balance |
US10324466B2 (en) * | 2017-01-27 | 2019-06-18 | International Business Machines Corporation | Personality sharing among drone swarm |
CN110979640A (en) * | 2019-12-25 | 2020-04-10 | 中国航空工业集团公司沈阳飞机设计研究所 | Method and circuit for cutting off autopilot by lever force sensor |
US20210016789A1 (en) * | 2018-03-07 | 2021-01-21 | Audi Ag | Method for operating a motor vehicle having an autopilot system, and motor vehicle |
Families Citing this family (158)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10518411B2 (en) * | 2016-05-13 | 2019-12-31 | General Electric Company | Robotic repair or maintenance of an asset |
US10169927B2 (en) | 2014-08-21 | 2019-01-01 | Honeywell International Inc. | Methods and systems for monitoring vehicle systems using mobile devices |
US10311565B2 (en) * | 2015-04-14 | 2019-06-04 | ETAK Systems, LLC | Cell site equipment verification using 3D modeling comparisons |
US10893419B2 (en) * | 2015-04-14 | 2021-01-12 | ETAK Systems, LLC | Systems and methods for coordinating initiation, preparing, vetting, scheduling, constructing, and implementing a small cell implementation |
US9947135B2 (en) * | 2015-04-14 | 2018-04-17 | ETAK Systems, LLC | Close-out audit systems and methods for cell site installation and maintenance |
US10255719B2 (en) * | 2015-04-14 | 2019-04-09 | ETAK Systems, LLC | Systems and methods for satellite data capture for telecommunications site modeling |
US9616773B2 (en) | 2015-05-11 | 2017-04-11 | Uber Technologies, Inc. | Detecting objects within a vehicle in connection with a service |
US20170046891A1 (en) * | 2015-08-12 | 2017-02-16 | Tyco Fire & Security Gmbh | Systems and methods for location identification and tracking using a camera |
WO2017057060A1 (en) | 2015-09-30 | 2017-04-06 | ソニー株式会社 | Driving control device, driving control method, and program |
CN108137050B (en) | 2015-09-30 | 2021-08-10 | 索尼公司 | Driving control device and driving control method |
US10712160B2 (en) | 2015-12-10 | 2020-07-14 | Uatc, Llc | Vehicle traction map for autonomous vehicles |
US9841763B1 (en) | 2015-12-16 | 2017-12-12 | Uber Technologies, Inc. | Predictive sensor array configuration system for an autonomous vehicle |
US9840256B1 (en) | 2015-12-16 | 2017-12-12 | Uber Technologies, Inc. | Predictive sensor array configuration system for an autonomous vehicle |
JP6602683B2 (en) * | 2016-02-05 | 2019-11-06 | 株式会社東芝 | Charging device and positional deviation detection method |
US9990548B2 (en) | 2016-03-09 | 2018-06-05 | Uber Technologies, Inc. | Traffic signal analysis system |
US9988787B1 (en) * | 2016-03-10 | 2018-06-05 | Robo Industries, Inc. | System for determining position of a vehicle |
US10725191B2 (en) * | 2016-06-09 | 2020-07-28 | Optimal Ranging, Inc. | Method and apparatus for simultaneous inductive excitation and locating of utilities |
US10809410B2 (en) | 2016-06-09 | 2020-10-20 | Optimal Ranging, Inc. | Method and apparatus for simultaneous inductive excitation and locating of utilities |
US11150654B2 (en) * | 2016-06-30 | 2021-10-19 | Skydio, Inc. | Dynamically adjusting UAV flight operations based on radio frequency signal data |
US10474162B2 (en) | 2016-07-01 | 2019-11-12 | Uatc, Llc | Autonomous vehicle localization using passive image data |
US10162354B2 (en) * | 2016-07-21 | 2018-12-25 | Baidu Usa Llc | Controlling error corrected planning methods for operating autonomous vehicles |
US10249200B1 (en) * | 2016-07-22 | 2019-04-02 | Amazon Technologies, Inc. | Deployable delivery guidance |
US10446043B2 (en) * | 2016-07-28 | 2019-10-15 | At&T Mobility Ii Llc | Radio frequency-based obstacle avoidance |
JP6973393B2 (en) * | 2016-07-29 | 2021-11-24 | 日本電産株式会社 | Mobile guidance systems, mobiles, guidance devices and computer programs |
US10139244B2 (en) * | 2016-08-17 | 2018-11-27 | Veoneer Us Inc. | ADAS horizon and vision supplemental V2X |
US10345441B2 (en) | 2016-08-25 | 2019-07-09 | Honeywell International Inc. | Unmanned vehicle proximity warning system |
DE102016119152B4 (en) * | 2016-10-07 | 2018-12-27 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Wind measurement by means of a multicopter |
CN109843680B (en) * | 2016-10-18 | 2022-04-08 | 本田技研工业株式会社 | Vehicle control device |
US10836639B1 (en) | 2016-10-26 | 2020-11-17 | Air Stations Llc/Elevated Analytics Llc Joint Venture | Air quality measurement system |
US10420018B2 (en) * | 2016-11-23 | 2019-09-17 | Qualcomm Incorporated | Steady-state beam scanning and codebook generation |
EP3548913B1 (en) * | 2016-11-29 | 2023-06-14 | Quadsat IVS | System for testing the accuracy of the automatic positioning means of a signal tracking antenna |
US11541977B2 (en) * | 2016-11-30 | 2023-01-03 | Ebara Corporation | Communication system for underwater drone and airlock apparatus for drone |
US10627524B2 (en) * | 2016-12-06 | 2020-04-21 | At&T Intellectual Property I, L.P. | Method and apparatus for positioning via unmanned aerial vehicles |
WO2018112640A1 (en) * | 2016-12-22 | 2018-06-28 | Macdonald, Dettwiler And Associates Inc. | Unobtrusive driving assistance method and system for a vehicle to avoid hazards |
US9973261B1 (en) * | 2016-12-28 | 2018-05-15 | Echostar Technologies Llc | Rapidly-deployable, drone-based wireless communications systems and methods for the operation thereof |
JP6786407B2 (en) * | 2017-01-23 | 2020-11-18 | 株式会社クボタ | Work vehicle wireless management system |
CN110192122B (en) * | 2017-01-24 | 2023-11-14 | 深圳市大疆创新科技有限公司 | System and method for radar control on unmanned mobile platforms |
US10866226B1 (en) | 2017-02-07 | 2020-12-15 | Air Stations Llc/Elevated Analytics Llc Joint Venture | Multi-point ground emission source sensor system |
US10768630B2 (en) * | 2017-02-09 | 2020-09-08 | International Business Machines Corporation | Human imperceptible signals |
US10329017B2 (en) * | 2017-03-13 | 2019-06-25 | General Electric Company | System and method for integrating flight path and site operating data |
DE102017106925B4 (en) * | 2017-03-30 | 2024-04-04 | Nikolaus Holzer | Receiving device for packages or parcels delivered by air |
US10928371B1 (en) | 2017-03-31 | 2021-02-23 | Air Stations Llc/Elevated Analytics Llc Joint Venture | Hand-held sensor and monitor system |
GB2561238A (en) * | 2017-04-07 | 2018-10-10 | Univ Bath | Apparatus and method for monitoring objects in space |
JP6673293B2 (en) * | 2017-05-24 | 2020-03-25 | トヨタ自動車株式会社 | Vehicle system |
US10403059B2 (en) * | 2017-06-05 | 2019-09-03 | Honeywell International Inc. | Distributed vehicle monitoring systems and methods |
US10591911B2 (en) * | 2017-06-22 | 2020-03-17 | Korea University Research And Business Foundation | Apparatus and method for controlling drone formation |
US10386856B2 (en) | 2017-06-29 | 2019-08-20 | Uber Technologies, Inc. | Autonomous vehicle collision mitigation systems and methods |
US11009868B2 (en) | 2017-07-20 | 2021-05-18 | Nuro, Inc. | Fleet of autonomous vehicles with lane positioning and platooning behaviors |
WO2019018695A1 (en) | 2017-07-20 | 2019-01-24 | Nuro, Inc. | Autonomous vehicle repositioning |
JP7299210B2 (en) | 2017-07-28 | 2023-06-27 | ニューロ・インコーポレーテッド | Systems and Mechanisms for Upselling Products in Autonomous Vehicles |
US20190041514A1 (en) * | 2017-08-01 | 2019-02-07 | Ford Global Technologies, Llc | Method and apparatus for driving hazard detection |
US10065638B1 (en) | 2017-08-03 | 2018-09-04 | Uber Technologies, Inc. | Multi-model switching on a collision mitigation system |
US20190054937A1 (en) * | 2017-08-15 | 2019-02-21 | Bnsf Railway Company | Unmanned aerial vehicle system for inspecting railroad assets |
CN107640150A (en) * | 2017-09-13 | 2018-01-30 | 深圳市鑫汇达机械设计有限公司 | A kind of safe collision avoidance system |
US10423831B2 (en) * | 2017-09-15 | 2019-09-24 | Honeywell International Inc. | Unmanned aerial vehicle based expansion joint failure detection system |
CN107688352B (en) * | 2017-09-27 | 2021-03-16 | 广东工业大学 | Correction method and system for self-adaptive unmanned device running track |
CN107544514B (en) * | 2017-09-29 | 2022-01-07 | 广州唯品会研究院有限公司 | Robot obstacle avoiding method and device, storage medium and robot |
US10579069B2 (en) * | 2017-10-09 | 2020-03-03 | Toyota Motor Engineering & Manufacturing North America, Inc. | Autonomous driving systems using aerial vehicles |
CN107861510A (en) * | 2017-11-01 | 2018-03-30 | 龚土婷 | A kind of intelligent vehicle control loop |
US10824862B2 (en) | 2017-11-14 | 2020-11-03 | Nuro, Inc. | Three-dimensional object detection for autonomous robotic systems using image proposals |
CN108008628B (en) * | 2017-11-17 | 2020-02-18 | 华南理工大学 | Method for controlling preset performance of uncertain underactuated unmanned ship system |
WO2019102360A1 (en) * | 2017-11-21 | 2019-05-31 | Walker Grant Robert James | Drone traffic management system and method |
US10628703B2 (en) * | 2017-12-19 | 2020-04-21 | International Business Machines Corporation | Identifying temporal changes of industrial objects by matching images |
US10894601B2 (en) * | 2017-12-20 | 2021-01-19 | Wing Aviation Llc | Methods and systems for self-deployment of operational infrastructure by an unmanned aerial vehicle (UAV) |
CN108227738B (en) * | 2017-12-28 | 2019-07-19 | 湖北电鹰科技有限公司 | A kind of unmanned plane barrier-avoiding method and system |
US11423791B2 (en) * | 2018-01-05 | 2022-08-23 | Gopro, Inc. | Adaptive object detection |
US10967875B2 (en) * | 2018-01-05 | 2021-04-06 | Honda Motor Co., Ltd. | Control system for autonomous all-terrain vehicle (ATV) |
CN110032064A (en) * | 2018-01-12 | 2019-07-19 | 西安远智电子科技有限公司 | A kind of unmanned aerial vehicle (UAV) control method and device |
US11755040B2 (en) * | 2018-01-24 | 2023-09-12 | Ntt Docomo, Inc. | Flight control apparatus and flight control system |
US20190236966A1 (en) * | 2018-01-31 | 2019-08-01 | General Electric Company | Centralized registry for unmanned vehicle traffic management |
US11279496B2 (en) * | 2018-02-21 | 2022-03-22 | Sikorsky Aircraft Corporation | System for reliable landing gear contact with identification of the surface |
US11636375B2 (en) * | 2018-02-27 | 2023-04-25 | Toyota Research Institute, Inc. | Adversarial learning of driving behavior |
CN108519773B (en) * | 2018-03-07 | 2020-01-14 | 西安交通大学 | Path planning method for unmanned vehicle in structured environment |
US11323886B2 (en) * | 2018-03-14 | 2022-05-03 | United States Of America As Represented By The Secretary Of The Air Force | Cooperative target execution system for unmanned aerial vehicle networks |
US11222546B2 (en) * | 2018-03-16 | 2022-01-11 | Airbus Sas | Pairing aircraft during flight |
WO2019189908A1 (en) * | 2018-03-30 | 2019-10-03 | パナソニックIpマネジメント株式会社 | Driving assistance device, vehicle, driving misconduct sensing system, and server device |
CN108681321B (en) * | 2018-04-10 | 2021-05-14 | 华南理工大学 | Underwater detection method for unmanned ship cooperative formation |
US11334753B2 (en) | 2018-04-30 | 2022-05-17 | Uatc, Llc | Traffic signal state classification for autonomous vehicles |
CN108429566A (en) * | 2018-05-16 | 2018-08-21 | 广州天空概念通信科技有限公司 | A kind of phased transceiver of unmanned plane counter system |
US10661898B2 (en) * | 2018-06-21 | 2020-05-26 | Cimcon Lighting, Inc. | Unmanned aerial vehicle for infrastructure maintenance |
CN108829107B (en) * | 2018-06-27 | 2021-06-04 | 重庆长安汽车股份有限公司 | Cooperative queue driving system based on communication and team forming and quitting method based on system |
FR3084151B1 (en) * | 2018-07-23 | 2020-06-19 | Safran | METHOD AND DEVICE FOR AIDING THE NAVIGATION OF A FLEET OF VEHICLES USING AN INVARIANT KALMAN FILTER |
CN109211582B (en) * | 2018-07-27 | 2020-08-18 | 山东省科学院自动化研究所 | System and method for testing cognitive traffic command gesture capability of unmanned vehicle |
CN109116732A (en) * | 2018-08-02 | 2019-01-01 | 哈尔滨工程大学 | A kind of drive lacking unmanned boat sliding formwork stabilized control method stable based on Hurwitz |
GB2578420B (en) * | 2018-08-08 | 2023-03-29 | Trw Ltd | A sensing apparatus |
US11005662B2 (en) * | 2018-08-21 | 2021-05-11 | Ut-Battelle, Llc | Multimodal communication system |
CN109062058B (en) * | 2018-09-26 | 2021-03-19 | 大连海事大学 | Ship course track tracking design method based on self-adaptive fuzzy optimal control |
WO2020079702A1 (en) * | 2018-10-18 | 2020-04-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Formation flight of unmanned aerial vehicles |
US11209820B2 (en) * | 2018-11-14 | 2021-12-28 | Honda Motor Co., Ltd. | System and method for providing autonomous vehicular navigation within a crowded environment |
CN109508006A (en) * | 2018-12-10 | 2019-03-22 | 上海宏英智能科技有限公司 | A kind of automated driving system of the autocrane based on Beidou |
US11286058B2 (en) * | 2018-12-18 | 2022-03-29 | Textron Innovations Inc. | Heliport docking system |
US11099563B2 (en) * | 2018-12-19 | 2021-08-24 | Zoox, Inc. | Multi-controller synchronization |
CN109856624B (en) * | 2019-01-03 | 2021-03-16 | 中国人民解放军空军研究院战略预警研究所 | Target state estimation method for single-radar linear flight path line |
US11003182B2 (en) * | 2019-01-04 | 2021-05-11 | Ford Global Technologies, Llc | Vehicle monitoring and control infrastructure |
CN109828603A (en) * | 2019-01-22 | 2019-05-31 | 重庆邮电大学 | A kind of control method and system that quadrotor drone is formed into columns |
WO2020153883A1 (en) * | 2019-01-24 | 2020-07-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Network node and method performed therein for handling data of objects in a communication network |
US10929692B2 (en) * | 2019-02-06 | 2021-02-23 | Veoneer Us Inc. | Lane level position determination |
EP3696406A1 (en) * | 2019-02-13 | 2020-08-19 | Siemens Gamesa Renewable Energy A/S | A method for computer-implemented analysis of a wind farm comprising a number of wind turbines |
CN109703568B (en) * | 2019-02-19 | 2020-08-18 | 百度在线网络技术(北京)有限公司 | Method, device and server for learning driving strategy of automatic driving vehicle in real time |
US10852113B2 (en) * | 2019-03-06 | 2020-12-01 | Bae Systems Information And Electronic Systems Integration Inc. | Search and protect device for airborne targets |
CN109885087B (en) * | 2019-03-12 | 2019-10-29 | 中国人民解放军军事科学院国防科技创新研究院 | The double star short distance formation method of micro-nano satellite |
EP3716725A1 (en) * | 2019-03-27 | 2020-09-30 | Volkswagen Aktiengesellschaft | A concept for determining user equipment for relaying signals to and from another user equipment in a mobile communication system |
CN109884886B (en) * | 2019-03-29 | 2021-09-28 | 大连海事大学 | Ship motion model-free adaptive optimal control method based on width learning |
US11321972B1 (en) | 2019-04-05 | 2022-05-03 | State Farm Mutual Automobile Insurance Company | Systems and methods for detecting software interactions for autonomous vehicles within changing environmental conditions |
US11048261B1 (en) | 2019-04-05 | 2021-06-29 | State Farm Mutual Automobile Insurance Company | Systems and methods for evaluating autonomous vehicle software interactions for proposed trips |
CN110083158B (en) * | 2019-04-28 | 2022-08-16 | 深兰科技(上海)有限公司 | Method and equipment for determining local planning path |
US11275391B2 (en) * | 2019-05-13 | 2022-03-15 | The Boeing Company | In-service maintenance process using unmanned aerial vehicles |
CN110045615A (en) * | 2019-05-17 | 2019-07-23 | 哈尔滨工程大学 | A kind of UUV recycles Auto-disturbance-rejection Control under water |
US10877125B1 (en) * | 2019-06-05 | 2020-12-29 | United States Of America As Represented By The Secretary Of The Air Force | System and method for countering drones |
FR3098336B1 (en) * | 2019-07-01 | 2022-08-12 | Uavia | Method for determining the path of an unmanned aerial device and other associated methods |
RU2728197C1 (en) * | 2019-08-05 | 2020-07-28 | Акционерное общество "Концерн радиостроения "Вега" | Method to control a group of unmanned aerial vehicles taking into account the degree of danger of surrounding objects |
CN110531217B (en) * | 2019-08-12 | 2021-12-10 | 深圳供电局有限公司 | Line tracking device and tracking method thereof |
RU2722521C1 (en) * | 2019-09-13 | 2020-06-01 | Общество с ограниченной ответственностью "СТИЛСОФТ" | Method for accurate landing of unmanned aerial vehicle on landing platform |
US20200005656A1 (en) * | 2019-09-13 | 2020-01-02 | Intel Corporation | Direction finding in autonomous vehicle systems |
US11834082B2 (en) * | 2019-09-18 | 2023-12-05 | Progress Rail Services Corporation | Rail buckle detection and risk prediction |
CN112583872B (en) * | 2019-09-29 | 2022-05-13 | 华为云计算技术有限公司 | Communication method and device |
US11964627B2 (en) | 2019-09-30 | 2024-04-23 | Nuro, Inc. | Methods and apparatus for supporting compartment inserts in autonomous delivery vehicles |
JP7215391B2 (en) * | 2019-10-15 | 2023-01-31 | トヨタ自動車株式会社 | Vehicle control system and vehicle control device for self-driving vehicle |
CN110658829B (en) * | 2019-10-30 | 2021-03-30 | 武汉理工大学 | Intelligent collision avoidance method for unmanned surface vehicle based on deep reinforcement learning |
US20220026570A1 (en) * | 2019-11-07 | 2022-01-27 | Coda Octopus Group Inc. | Techniques for sonar data processing |
US11789146B2 (en) * | 2019-11-07 | 2023-10-17 | Coda Octopus Group Inc. | Combined method of location of sonar detection device |
CN111103880B (en) * | 2019-12-23 | 2023-03-21 | 江苏大学 | Collaborative navigation operation path planning system and method for unmanned grain combine harvester |
RU2746026C1 (en) * | 2019-12-25 | 2021-04-06 | Общество с ограниченной ответственностью "Яндекс Беспилотные Технологии" | Method and system for generating the reference path of a self-driving car (sdc) |
US20210197819A1 (en) * | 2019-12-31 | 2021-07-01 | Zoox, Inc. | Vehicle control to join route |
EP4084998B1 (en) * | 2020-01-03 | 2024-02-07 | Volvo Truck Corporation | Method for controlling operation of a vehicle |
KR102263892B1 (en) * | 2020-02-17 | 2021-06-15 | 한국철도기술연구원 | Navigation positioning system for multicopter adjacent power rail, in geomagnetic disturbance situation, and control method |
SE2000032A1 (en) * | 2020-02-17 | 2021-07-06 | Bae Systems Bofors Ab | Method for fire control of fire tube air friend and a fire control system |
US20210278855A1 (en) * | 2020-03-05 | 2021-09-09 | Murata Machinery, Ltd. | Autonomous vehicle |
CN111367285B (en) * | 2020-03-18 | 2023-06-30 | 华东理工大学 | Wheeled mobile trolley cooperative formation and path planning method |
US11919149B2 (en) | 2020-03-20 | 2024-03-05 | Rosendin Electric, Inc. | Autonomous ground vehicle for solar module installation |
WO2021194747A1 (en) | 2020-03-23 | 2021-09-30 | Nuro, Inc. | Methods and apparatus for automated deliveries |
CN111459161B (en) * | 2020-04-03 | 2021-07-06 | 北京理工大学 | Multi-robot system human intervention control method |
JP7449770B2 (en) * | 2020-04-28 | 2024-03-14 | 三菱重工業株式会社 | Terminal, control system, control method and program |
US11288520B2 (en) | 2020-06-25 | 2022-03-29 | Toyota Motor Engineering & Manufacturing N.A. Inc. | Systems and methods to aggregate and distribute dynamic information of crowdsourcing vehicles for edge-assisted live map service |
JP7450481B2 (en) * | 2020-07-14 | 2024-03-15 | 本田技研工業株式会社 | Mobile object control device, mobile object, mobile object control method, and program |
US11797019B2 (en) * | 2020-07-20 | 2023-10-24 | Ford Global Technologies, Llc | Rugged terrain vehicle design and route optimization |
CN111897311B (en) * | 2020-07-27 | 2022-04-22 | 广州智能装备研究院有限公司 | AGV wheel slip fault diagnosis method and device and storage medium |
EP3965395A1 (en) | 2020-09-08 | 2022-03-09 | Volkswagen Ag | Apparatus, method, and computer program for a first vehicle and for estimating a position of a second vehicle at the first vehicle, vehicle |
WO2022060266A1 (en) * | 2020-09-18 | 2022-03-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Network node and method for handling inspection of structure |
GB2598939B (en) * | 2020-09-20 | 2023-01-11 | Gregory Lloyd Peter | Method and system for the production of risk maps of airspace, and land areas based on the fusion of data from multiple sources |
US11119485B1 (en) * | 2020-10-07 | 2021-09-14 | Accenture Global Solutions Limited | Drone operational advisory engine |
WO2022086960A1 (en) | 2020-10-20 | 2022-04-28 | DroneUp, LLC | Methods and apparatus for navigating an unmanned vehicle based on a calculation of relative distance differences between a start location and a designated drop location |
CN112650231B (en) * | 2020-12-15 | 2022-07-15 | 哈尔滨工程大学 | Under-actuated ship formation control system for realizing collision and obstacle avoidance |
US11982734B2 (en) * | 2021-01-06 | 2024-05-14 | Lassen Peak, Inc. | Systems and methods for multi-unit collaboration for noninvasive detection of concealed impermissible objects |
WO2022197370A2 (en) * | 2021-01-26 | 2022-09-22 | American Robotics, Inc. | Methods and systems for threat aircraft detection using multiple sensors |
CN112947077B (en) * | 2021-01-29 | 2021-10-29 | 哈尔滨工程大学 | AUV robust trajectory tracking control method based on switching performance function technology |
WO2022187264A1 (en) * | 2021-03-01 | 2022-09-09 | Planted Solar, Inc. | Systems and methods for solar power plant assembly |
CN113110585B (en) * | 2021-04-28 | 2022-12-13 | 一飞(海南)科技有限公司 | Method and system for flying formation dance step state switching, unmanned aerial vehicle and application |
US20220415179A1 (en) * | 2021-06-23 | 2022-12-29 | Qualcomm Incorporated | Sub-platoons within vehicle-to-everything technology |
US20220410951A1 (en) * | 2021-06-25 | 2022-12-29 | International Electronic Machines Corp. | Image-Based Vehicle Evaluation for Non-compliant Elements |
US20230048365A1 (en) * | 2021-08-11 | 2023-02-16 | Here Global B.V. | Corrected trajectory mapping |
CN113815529A (en) * | 2021-08-23 | 2021-12-21 | 华人运通(上海)云计算科技有限公司 | Backing-up assisting method, equipment and system based on unmanned aerial vehicle and vehicle |
US20230066635A1 (en) * | 2021-08-26 | 2023-03-02 | Motional Ad Llc | Controlling vehicle performance based on data associated with an atmospheric condition |
CN113608555B (en) * | 2021-10-08 | 2021-12-21 | 广东博创佳禾科技有限公司 | Multi-unmanned aerial vehicle cooperative control method and device |
US11565730B1 (en) | 2022-03-04 | 2023-01-31 | Bnsf Railway Company | Automated tie marking |
US11628869B1 (en) | 2022-03-04 | 2023-04-18 | Bnsf Railway Company | Automated tie marking |
US11623669B1 (en) * | 2022-06-10 | 2023-04-11 | Bnsf Railway Company | On-board thermal track misalignment detection system and method therefor |
CN116224769B (en) * | 2023-02-28 | 2023-09-19 | 海南大学 | PID consistency control method for unmanned automobile formation |
Family Cites Families (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5453925A (en) * | 1993-05-28 | 1995-09-26 | Fisher Controls International, Inc. | System and method for automatically tuning a process controller |
JP3743582B2 (en) * | 1996-02-21 | 2006-02-08 | 株式会社小松製作所 | Fleet control device and control method for unmanned vehicle and manned vehicle mixed running |
US6513758B1 (en) * | 2000-08-21 | 2003-02-04 | Hughes Electronics Corporation | High altitude platform control system |
US7844364B2 (en) * | 2002-04-16 | 2010-11-30 | Irobot Corporation | Systems and methods for dispersing and clustering a plurality of robotic devices |
US7228227B2 (en) * | 2004-07-07 | 2007-06-05 | The Boeing Company | Bezier curve flightpath guidance using moving waypoints |
US7469183B2 (en) * | 2005-01-24 | 2008-12-23 | International Business Machines Corporation | Navigating UAVs in formation |
US7734386B2 (en) * | 2005-07-25 | 2010-06-08 | Lockheed Martin Corporation | System for intelligently controlling a team of vehicles |
US7451023B2 (en) * | 2005-07-25 | 2008-11-11 | Lockheed Martin Corporation | Collaborative system for a team of unmanned vehicles |
US20160033649A1 (en) * | 2006-04-28 | 2016-02-04 | Telecommunication Systems, Inc. | Geolocation and frequency synchronization of earth-based satellite uplinks |
US9658341B2 (en) * | 2006-04-28 | 2017-05-23 | Telecommunication Systems, Inc. | GNSS long-code acquisition, ambiguity resolution, and signal validation |
US20080039991A1 (en) * | 2006-08-10 | 2008-02-14 | May Reed R | Methods and systems for providing accurate vehicle positioning |
DE602006012860D1 (en) * | 2006-12-22 | 2010-04-22 | Saab Ab | Device on a missile and method for collision avoidance |
US7894948B2 (en) * | 2007-11-01 | 2011-02-22 | L-3 Communications Integrated Systems L.P. | Systems and methods for coordination of entities and/or communicating location information |
KR20100137413A (en) * | 2007-12-19 | 2010-12-30 | 아이브이오 리서치 리미티드 | Vehicle competition implementation system |
US8060270B2 (en) * | 2008-02-29 | 2011-11-15 | The Boeing Company | System and method for inspection of structures and objects by swarm of remote unmanned vehicles |
US8924069B1 (en) * | 2008-04-09 | 2014-12-30 | The United States of America as represented by the Administrator of the National Aeronautics & Space Administration (NASA) | Artificial immune system approach for airborne vehicle maneuvering |
US7777674B1 (en) * | 2008-08-20 | 2010-08-17 | L-3 Communications, Corp. | Mobile distributed antenna array for wireless communication |
US7969346B2 (en) * | 2008-10-07 | 2011-06-28 | Honeywell International Inc. | Transponder-based beacon transmitter for see and avoid of unmanned aerial vehicles |
US8538673B2 (en) * | 2008-10-31 | 2013-09-17 | Czech Technical University In Prague | System and method for planning/replanning collision free flight plans in real or accelerated time |
US8647287B2 (en) * | 2008-12-07 | 2014-02-11 | Andrew Greenberg | Wireless synchronized movement monitoring apparatus and system |
US8155811B2 (en) * | 2008-12-29 | 2012-04-10 | General Electric Company | System and method for optimizing a path for a marine vessel through a waterway |
US20100215212A1 (en) * | 2009-02-26 | 2010-08-26 | Honeywell International Inc. | System and Method for the Inspection of Structures |
FR2944888B1 (en) * | 2009-04-28 | 2012-03-30 | Thales Sa | NAVIGATION ASSISTING METHOD FOR DETERMINING THE TRACK OF AN AIRCRAFT |
US8918209B2 (en) * | 2010-05-20 | 2014-12-23 | Irobot Corporation | Mobile human interface robot |
US8429153B2 (en) * | 2010-06-25 | 2013-04-23 | The United States Of America As Represented By The Secretary Of The Army | Method and apparatus for classifying known specimens and media using spectral properties and identifying unknown specimens and media |
SE1050763A1 (en) * | 2010-07-08 | 2010-07-12 | Abb Research Ltd | A method for calibration of a mobile robot |
US8378881B2 (en) * | 2010-10-18 | 2013-02-19 | Raytheon Company | Systems and methods for collision avoidance in unmanned aerial vehicles |
DE102011006180A1 (en) * | 2011-03-25 | 2012-09-27 | Vodafone Holding Gmbh | Method and system for radio-based localization of a terminal |
EP2508956B1 (en) * | 2011-04-06 | 2013-10-30 | Kollmorgen Särö AB | A collision avoiding method and system |
NO334170B1 (en) * | 2011-05-16 | 2013-12-30 | Radionor Comm As | Method and system for long distance, adaptive, mobile, beamforming adhoc communication system with integrated positioning |
US9739864B2 (en) * | 2012-01-03 | 2017-08-22 | Ascentia Imaging, Inc. | Optical guidance systems and methods using mutually distinct signal-modifying |
US9463574B2 (en) * | 2012-03-01 | 2016-10-11 | Irobot Corporation | Mobile inspection robot |
US8874360B2 (en) * | 2012-03-09 | 2014-10-28 | Proxy Technologies Inc. | Autonomous vehicle and method for coordinating the paths of multiple autonomous vehicles |
US8788121B2 (en) * | 2012-03-09 | 2014-07-22 | Proxy Technologies, Inc. | Autonomous vehicle and method for coordinating the paths of multiple autonomous vehicles |
US9841761B2 (en) * | 2012-05-04 | 2017-12-12 | Aeryon Labs Inc. | System and method for controlling unmanned aerial vehicles |
GB201218963D0 (en) * | 2012-10-22 | 2012-12-05 | Bcb Int Ltd | Micro unmanned aerial vehicle and method of control therefor |
JP6144479B2 (en) * | 2012-11-09 | 2017-06-07 | 株式会社Soken | Vehicle mutual position detection device |
US10518877B2 (en) * | 2012-12-19 | 2019-12-31 | Elwha Llc | Inter-vehicle communication for hazard handling for an unoccupied flying vehicle (UFV) |
US9310222B1 (en) * | 2014-06-16 | 2016-04-12 | Sean Patrick Suiter | Flight assistant with automatic configuration and landing site selection method and apparatus |
US9102406B2 (en) * | 2013-02-15 | 2015-08-11 | Disney Enterprises, Inc. | Controlling unmanned aerial vehicles as a flock to synchronize flight in aerial displays |
US20140292578A1 (en) * | 2013-03-26 | 2014-10-02 | King Abdulaziz City For Science And Technology | Beam steering antenna method for unmanned vehicle |
ES2869858T3 (en) * | 2013-05-08 | 2021-10-26 | Airbus Defence & Space Gmbh | Evaluation of the position of an aerial vehicle |
US20140336928A1 (en) * | 2013-05-10 | 2014-11-13 | Michael L. Scott | System and Method of Automated Civil Infrastructure Metrology for Inspection, Analysis, and Information Modeling |
US9780859B2 (en) * | 2014-02-28 | 2017-10-03 | Spatial Digital Systems, Inc. | Multi-user MIMO via active scattering platforms |
US9859972B2 (en) * | 2014-02-17 | 2018-01-02 | Ubiqomm Llc | Broadband access to mobile platforms using drone/UAV background |
WO2015161040A1 (en) * | 2014-04-16 | 2015-10-22 | Massachusetts Institute Of Technology | Distributed airborne beamforming system |
US9479964B2 (en) * | 2014-04-17 | 2016-10-25 | Ubiqomm Llc | Methods and apparatus for mitigating fading in a broadband access system using drone/UAV platforms |
US9271258B2 (en) * | 2014-06-02 | 2016-02-23 | Ensco, Inc. | Distance and velocity measurements using carrier signals |
US9614608B2 (en) * | 2014-07-14 | 2017-04-04 | Ubiqomm Llc | Antenna beam management and gateway design for broadband access using unmanned aerial vehicle (UAV) platforms |
US9606535B2 (en) * | 2014-07-22 | 2017-03-28 | Sikorsky Aircraft Corporation | Spatial recognition in an autonomous vehicle group |
US8897770B1 (en) * | 2014-08-18 | 2014-11-25 | Sunlight Photonics Inc. | Apparatus for distributed airborne wireless communications |
US9129355B1 (en) * | 2014-10-09 | 2015-09-08 | State Farm Mutual Automobile Insurance Company | Method and system for assessing damage to infrastructure |
US9571180B2 (en) * | 2014-10-16 | 2017-02-14 | Ubiqomm Llc | Unmanned aerial vehicle (UAV) beam forming and pointing toward ground coverage area cells for broadband access |
JP6409503B2 (en) * | 2014-10-29 | 2018-10-24 | 株式会社Soken | Observation equipment |
US9712228B2 (en) * | 2014-11-06 | 2017-07-18 | Ubiqomm Llc | Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access |
US9415869B1 (en) * | 2015-03-26 | 2016-08-16 | Amazon Technologies, Inc. | Mobile antenna array |
US9599994B1 (en) * | 2015-08-03 | 2017-03-21 | The United States Of America As Represented By The Secretary Of The Army | Collisionless flying of unmanned aerial vehicles that maximizes coverage of predetermined region |
US10312993B2 (en) * | 2015-10-30 | 2019-06-04 | The Florida International University Board Of Trustees | Cooperative clustering for enhancing MU-massive-MISO-based UAV communication |
-
2016
- 2016-04-06 US US15/092,541 patent/US20170227470A1/en not_active Abandoned
- 2016-04-06 US US15/092,558 patent/US9536149B1/en not_active Expired - Fee Related
- 2016-04-06 US US15/092,576 patent/US9711851B1/en not_active Expired - Fee Related
- 2016-07-08 US US15/206,191 patent/US10025315B2/en not_active Expired - Fee Related
- 2016-07-08 US US15/206,216 patent/US9911346B2/en active Active
- 2016-07-08 US US15/206,213 patent/US20170227962A1/en not_active Abandoned
- 2016-07-09 US US15/206,229 patent/US10185321B2/en active Active
- 2016-07-09 US US15/206,222 patent/US20170227963A1/en not_active Abandoned
- 2016-07-09 US US15/206,228 patent/US9823655B2/en active Active
-
2017
- 2017-02-02 WO PCT/US2017/016282 patent/WO2017136594A1/en active Application Filing
- 2017-02-02 WO PCT/US2017/016287 patent/WO2017164993A2/en active Application Filing
- 2017-02-02 WO PCT/US2017/016294 patent/WO2017136602A1/en active Application Filing
- 2017-02-02 WO PCT/US2017/016266 patent/WO2017189070A2/en active Application Filing
- 2017-02-02 WO PCT/US2017/016296 patent/WO2017136604A1/en active Application Filing
- 2017-02-02 WO PCT/US2017/016261 patent/WO2017172039A2/en active Application Filing
- 2017-02-02 WO PCT/US2017/016273 patent/WO2017155641A2/en active Application Filing
- 2017-02-02 WO PCT/US2017/016262 patent/WO2017189069A2/en active Application Filing
- 2017-02-02 WO PCT/US2017/016242 patent/WO2017176354A2/en active Application Filing
- 2017-06-29 US US15/637,978 patent/US10678269B2/en active Active
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160274937A1 (en) * | 2013-10-25 | 2016-09-22 | Toyota Jidosha Kabushiki Kaisha | Control device |
US10108194B1 (en) * | 2016-09-02 | 2018-10-23 | X Development Llc | Object placement verification |
US10324466B2 (en) * | 2017-01-27 | 2019-06-18 | International Business Machines Corporation | Personality sharing among drone swarm |
US20190310638A1 (en) * | 2017-01-27 | 2019-10-10 | International Business Machines Corporation | Personality sharing among drone swarm |
US10831197B2 (en) * | 2017-01-27 | 2020-11-10 | International Business Machines Corporation | Personality sharing among drone swarm |
US20180375530A1 (en) * | 2017-06-23 | 2018-12-27 | Intel Corporation | Self-configuring error control coding |
US10547327B2 (en) * | 2017-06-23 | 2020-01-28 | Intel Corporation | Self-configuring error control coding |
US20210016789A1 (en) * | 2018-03-07 | 2021-01-21 | Audi Ag | Method for operating a motor vehicle having an autopilot system, and motor vehicle |
US11767025B2 (en) * | 2018-03-07 | 2023-09-26 | Audi Ag | Method for operating a motor vehicle having an autopilot system, and motor vehicle |
CN109507871A (en) * | 2018-12-11 | 2019-03-22 | 广东工业大学 | Pid parameter setting method and product for the control of two-wheeled balance car car body balance |
CN110979640A (en) * | 2019-12-25 | 2020-04-10 | 中国航空工业集团公司沈阳飞机设计研究所 | Method and circuit for cutting off autopilot by lever force sensor |
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