EP4051986A1 - Système et procédé de gestion de la position d'un véhicule autonome - Google Patents
Système et procédé de gestion de la position d'un véhicule autonomeInfo
- Publication number
- EP4051986A1 EP4051986A1 EP20796847.0A EP20796847A EP4051986A1 EP 4051986 A1 EP4051986 A1 EP 4051986A1 EP 20796847 A EP20796847 A EP 20796847A EP 4051986 A1 EP4051986 A1 EP 4051986A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- positions
- safety
- model
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
- G01C21/165—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
- G01C21/183—Compensation of inertial measurements, e.g. for temperature effects
- G01C21/188—Compensation of inertial measurements, e.g. for temperature effects for accumulated errors, e.g. by coupling inertial systems with absolute positioning systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/0205—Diagnosing or detecting failures; Failure detection models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W60/00—Drive control systems specially adapted for autonomous road vehicles
- B60W60/001—Planning or execution of driving tasks
- B60W60/0015—Planning or execution of driving tasks specially adapted for safety
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/18—Braking system
Definitions
- TITLE System and method for managing the position of an autonomous vehicle.
- the invention relates to a system for managing the position of an autonomous vehicle.
- the invention also relates to an autonomous vehicle comprising such a management system.
- the invention also relates to a method for managing the position of an autonomous vehicle.
- the invention also relates to an alert system, in particular visual or haptic or audible, for a driver or a remote operator.
- the invention relates to a data synthesis system.
- a location system is usually provided to locate the vehicle in a local or global landmark. Algorithms for detecting and tracking the movement of the vehicle, as well as a route planner, are often linked to such a tracking system. It therefore appears important to provide a precise location system for an autonomous vehicle.
- the additional sensors usually used in autonomous vehicles such as for example based on lidar, based on RTK-DGPS or based on INS, have a high cost and can suffer from malfunctions and / or errors. This results in a risk of losing control of the vehicle.
- Document JP2004271293 discloses a navigation device and method using location information provided by GPS, an acronym of English origin for “Global Positioning System”, as well as a vehicle location history.
- GPS data is defined as the current position of the vehicle only if it is included in the expected range of vehicle position from the device's own position data and the position history. Otherwise, the estimated vehicle position is set as the current vehicle position. Different thresholds are determined for the orientation angle and the distance traveled for different speed values. The estimated vehicle position is calculated from point-based displacement equations for a given speed and slewing angle.
- this solution has drawbacks.
- the state of the vehicle can be predicted only relative to the current state of the vehicle without taking into account the controller.
- This solution only makes it possible to predict the condition of the vehicle in a single future time interval.
- the aim of the invention is to provide a system and a method for managing the position of an autonomous vehicle which overcomes the above drawbacks and improves the systems and methods known from the prior art.
- the invention makes it possible to produce a system and a method which are reliable and which make it possible to dispense with the use of additional sensors and make it possible to safely overcome temporary errors in a monitoring system. location.
- the invention relates to a method for managing the position of a vehicle, comprising the following steps:
- the estimation step may include:
- the security states are preferably future or subsequent security positions of the vehicle which are calculated and correspond to operating modes which aim to alleviate various cases of degradation of a positioning system using sensors.
- the method according to the invention can be implemented so as to increase the precision while slowing down the speed profile, so as to allow time for the GPS positioning system to regain its maximum capacity.
- the first positions of the vehicle are determined from a precision ellipse, ie by converging a plurality of safety positions. Thus, from several security states of the vehicle, a first position of the vehicle is determined.
- longitudinal model is preferably meant a mathematical model which makes it possible to determine / estimate a future longitudinal position of a vehicle from a current longitudinal position of the vehicle.
- transverse model is preferably understood to mean a mathematical model which makes it possible to determine / estimate a future transverse position of a vehicle from a current transverse position of the vehicle.
- the method may include producing a summary data system to compensate for single or multiple errors of an automated tracking system of a tracking system.
- the summary data designates the positioning or location data generated according to the invention from a vehicle model, called a complete model, using the lateral and longitudinal controllers in a loop.
- the model is powered by the navigation system (or location system). This means that the same data is used to power the vehicle controller (i.e. the real vehicle) and to power the vehicle model, so that the next real vehicle position matches the next GPS position of the vehicle. vehicle.
- the summary data has the same or substantially the same structure, preferably exactly the same structure, as the data coming from the positioning system (or positioning system), i.e. XY coordinates and a heading , which is enough to control the vehicle.
- Summary data is the data defining the security states mentioned above, that is, each security state is defined by a summary data set.
- Synthetic data is for example a latitude or a longitude or an abscissa or an ordinate or a heading.
- Each summary data item is advantageously provided by a safety estimated position module which will be described below.
- a set of summary data therefore makes it possible to define a safety state of the vehicle.
- the method may include a step of storing the security states of the vehicle, in particular the security positions of the vehicle.
- the method may include a step of determining a precision ellipse obtained from the calculated safety positions.
- the estimating step may include a step of determining a first estimated position of the vehicle from the precision ellipse, by converging the plurality of calculated safety positions.
- the method may include a step in which it is considered that there is a mismatch by comparing a second position with respect to the precision ellipse, in particular if the second position is outside the precision ellipse.
- the invention also relates to a system for managing the position of a vehicle comprising means for implementing the method defined above.
- the system can include:
- the invention also relates to a motor vehicle comprising a system defined above.
- the invention also relates to a computer program product comprising program code instructions recorded on a computer readable medium in order to implement the steps of the method defined above when said program runs on a computer or on a program product.
- computer downloadable from a communication network and / or recorded on a data medium readable by a computer and / or executable by a computer, comprising instructions which, when the program is executed by the computer, lead the latter to implement implements the method defined above.
- the invention also relates to a data recording medium, readable by a computer, on which is recorded a computer program comprising program code instructions for implementing the method defined above or on a recording medium.
- a computer program comprising program code instructions for implementing the method defined above or on a recording medium.
- readable by computer comprising instructions which, when they are executed by a computer, lead the latter to implement the method defined above.
- the invention relates to a signal from a data medium carrying the computer program product defined above.
- FIG. 1 represents a flowchart of an embodiment of a method for managing the position of a vehicle.
- FIG. 2 represents an embodiment of a system for managing the position of an autonomous vehicle.
- FIG. 3 represents an embodiment of a safety estimated position module of a position management system of the type of that of FIG. 2.
- Figure 4 is a graph illustrating the consideration of the longitudinal response of the vehicle by a longitudinal model of the vehicle of an estimated safety position module of the type of that of Figure 3.
- the invention provides a system for managing the position of an autonomous vehicle suitable for continuously checking the output of the system, which makes it possible in particular to assess its accuracy.
- a forecast datum for the location of the vehicle is calculated with the last available reliable location information. This forecast is made using a complete model of the vehicle, including the internal control logic of the vehicle. The estimated and actual data are compared in order to determine whether the new location data is precise enough, making it possible to detect any potential failure at the frequency of the safety positioning system. In the absence of fault detection, the estimated safety data is presumed to be the correct position of the vehicle.
- a first functionality of the system is that it can indicate when the system finds and provides exact location values.
- a second functionality of the system lies in the fact that it makes it possible to determine when the system is reaching its limits, and possibly to put the vehicle in a safe mode, in particular by activating emergency braking.
- the invention provides a system using a complete model of the vehicle and a control algorithm. Such a system is capable of estimating the subsequent safety positions of the vehicle with a higher frequency than those of commonly used tracking systems.
- Such a system makes it possible to obtain an envelope ellipse of the predicted safety position points in which the next position of the vehicle should lie.
- Such an ellipse takes into account the current vehicle dynamics and the estimated future vehicle dynamics.
- Such a system for managing the position of a vehicle is able to use all the vehicle information available.
- the complete vehicle model and control algorithm can take the latest available information into account to estimate the rest of the variables.
- the invention proposes a method for managing the position of a vehicle, comprising the following steps:
- a counter is initialized at time t.
- an estimate is made of a position of the vehicle at this instant t, called the first position.
- a fourth step E40 the first estimated position and the second measured position are compared.
- the first estimated position is considered as the current position of the vehicle at this instant t.
- the counter is incremented.
- the first estimated position can consist, as explained below, of a set of positions contained in a geometric figure, in particular an ellipse. It can therefore be considered that there is a discrepancy between the first estimated position and the second measured position, if the measured position is outside the geometric figure.
- step E52 of incrementing the counter if the threshold value is not reached by the counter, the process is repeated from the second step E20. If the counter reaches the threshold value, in a step E53, the vehicle is placed in secure mode.
- the second measured position is considered as the current position of the vehicle at this instant t. It can therefore be considered that there is agreement between the first estimated position and the second measured position, if the measured position is in the geometric figure.
- One embodiment of a system for managing the position of a vehicle comprises:
- means 9 for comparison and interpretation able to consider, in the event of a discrepancy between the first and second positions, the first positions as current positions of the vehicle at these different times, and able to consider, in the event of a match between the first and second positions, the second positions as current positions of the vehicle at these different times,
- a counter 23 capable of incrementing as long as there is a mismatch between a first position and a second position at the same instant and capable of initializing in the event of a concordance between a first position and a second position at the same instant
- the counter can be a discrepancy occurrence counter or a time counter, in particular a time delay.
- the threshold value can be equal to 0.5 seconds or 5 seconds.
- the estimation means 7, 8 include:
- - Generation means 8 capable of generating vehicle security states, in particular vehicle security positions.
- the means for placing the vehicle in a secure mode may include an emergency braking system 25.
- the means 3 for measuring the second positions of the vehicle can comprise at least one position sensor, in particular of the GPS type.
- the system 1 can further comprise a storage module 6 capable of storing the security states of the vehicle, in particular the security positions of the vehicle.
- the system 1 can further include a security evaluator 8 able to provide a precision ellipse from the security positions calculated by said combination means 7.
- the estimation means are able to determine a first estimated position p e of the vehicle from the precision ellipse, by causing the plurality of safety positions calculated by said combination means 7 to converge.
- the means for determining the current position of the vehicle 9 are able to consider that there is a mismatch by comparison with the precision ellipse, in particular if the second measured position is outside the precision ellipse.
- the system 1 may include a steering wheel angle measuring device and an angular yaw rate measuring device.
- the invention also relates to an autonomous vehicle, in particular an autonomous motor vehicle 100, comprising a system 1 for managing the position of a vehicle of the type described above.
- FIG. 2 An embodiment of a system 1 for managing the position of an autonomous vehicle 100 is described below with reference to FIG. 2.
- the safety position positioning system 1 can include an automated vehicle location system 3.
- the automated vehicle location system 3 comprises, for example, one or more sensors, in particular of position, for example of the GPS type.
- the automated vehicle location system 3 is able to determine the current position or location of the vehicle.
- the safety position positioning system 1 can include two main operating stages 10, 20.
- the system 1 comprises means for calculating at least one reliable safety position for the vehicle. This makes it possible to guarantee a safe location for the autonomous vehicle.
- the system 1 comprises means for evaluating the position of the vehicle.
- the second stage 20 of the system 1 makes it possible either to keep the vehicle in autonomous driving mode, or to put the vehicle in a secure mode, in particular:
- a braking system automatic safety device to limit the speed of the vehicle and / or stop the vehicle, and / or
- the alert system instead of being a visual alert system, may be of another type, for example an audible alert system or a haptic alert system.
- the interface may include a vehicle steering wheel and / or vehicle speed control pedals.
- the second stage 20 of the system 1 can include display means 21.
- the display means 21 are intended to inform the driver of the vehicle or a remote operator.
- the display means 21 can for example comprise a man-machine interface, in particular a head-up display.
- the display means 21 can for example be linked to a remote control center.
- the first stage 10 of the system 1 can include a module 9 for determining a position of the vehicle.
- the second stage 20 of the system 1 can include a position evaluator module 23.
- Module 9 uses the output of the automated vehicle tracking system 3 as the main input.
- the automated vehicle location system 3 is intended to provide information on the vehicle (XY coordinates, position, etc.). For reasons of simplicity, the following description focuses on the XY coordinates, but it can be easily applied to any other variable.
- the first stage 10 of the system 1 can further include a safety position estimation block 5.
- Block 5 is intended to calculate multiple subsequent safety positions of the vehicle, from safety position information previously stored in a storage module 6.
- the calculation of multiple subsequent safe positions in block 5 can be performed at a frequency less than or equal to the maximum frequency of block 5.
- the storage module 6 comprises for example the previous positions t- ⁇ of the vehicle, ⁇ being the maximum time horizon in which the system 1 can operate.
- the estimated safety position module 7 provides m times ⁇ positions of the vehicle at time t, ⁇ being the frequency difference between system 3 and system 1.
- the frequency of system 1 is, for example, of the order of 10 Hz.
- the estimated safety positions obtained at the output of the module 7 can be grouped together in a safety evaluator 8.
- the function of the safety evaluator 8 is to provide a precision ellipse as a function of ⁇ , which makes it possible to converge all the estimates supplied by the module 7 at a single point of the vehicle's safety position.
- Module 9 is intended to determine the current position of the vehicle. The current position of the vehicle is in particular intended to be supplied to the other automated modules of the vehicle (perception, navigation or control).
- the current position of the vehicle is chosen in the module 9 as a function of the position p m of the vehicle obtained at the output of the system 3 with respect to the precision ellipse calculated in the safety evaluator 8.
- the current position pt of the vehicle provided by module 9 corresponds to the safety position point p e calculated in the safety assessor 8.
- the current position pt of the vehicle provided by module 9 corresponds to the position p m of the vehicle obtained out of the system 3.
- the module 9 supplies the chosen value pt to the position evaluator module 23 of the second stage 20 of the system 1, and to the storage module 6 of the first stage 10 of the system 1 (by feedback).
- All data provided by module 9 can be stored in module 6 up to the time horizon ⁇ , with the aim of distinguishing between an isolated failure of the cycle (i.e. minor faults) and longer failures, which determine whether the system 3 provides data which is accurate or exhibits defects and / or failures during the time horizon ⁇ .
- This data is either the last reliable location data if it is located in the ellipse of points where the vehicle is expected to be, or several previous predicted safety states of the vehicle if it is located outside the ellipse, that is that is to say that they correspond to a malfunction of system 1 of the vehicle.
- This provides an assessment of a short-term and long-term security position. This makes it possible to determine the current position of the vehicle and the potential deviation from an exact position. If necessary, this data can be used to put the vehicle in a secure mode, including activating an automatic braking system.
- the second stage 20 of the system 1 can include an automated safety braking system 25, or emergency braking system, the input of which is connected to the output of the position evaluator module 23.
- the position evaluator module 23 of the second stage 20 of the system 1 can comprise a counter.
- the counter of the position evaluator module 23 is intended to be triggered as soon as a malfunction is detected in the system 3. This information is obtained from the position pt of the vehicle supplied at the output of the module 9.
- the counter can be based on a given time or distance horizon, taking into account the vehicle position pt provided with acceptable accuracy.
- the position evaluator module 23 can provide two possible outputs.
- a first output of the module 23 corresponds to the case where the system 3 again supplies exact data, which stops the counter.
- a second output of the module 23 corresponds to the case where the value supplied by the counter exceeds a given threshold, which activates the automated safety braking system 25.
- the second stage 20 of the system 1 can further include a vehicle trajectory planner 27.
- the second stage 20 of the system 1 can have two functions.
- a first function is to signal a malfunction in the system 1 by means of an alert signal included in the head-up display or the man-machine interface 21 of the vehicle (or a remote control center).
- a second function is the activation of the automated safety braking system 25.
- the second stage 20 of the system 1 can further include actuators 29 connected to the output of the automated safety braking system 25.
- the actuators 29 are intended in particular to correct the position of the vehicle in the event of temporary errors.
- the automated safety braking system 25 may include an adaptive control algorithm. Such an adaptive control algorithm makes it possible to generate a smooth braking maneuver as a function of the last reliable trip obtained at the output of the vehicle trajectory planner 27.
- the second stage 20 of the system 1 makes it possible to maximize the distance traveled without danger or in complete safety in a degraded state. This makes it possible to reduce the longitudinal deceleration of the vehicle as much as possible. This results in increased passenger comfort when placing the vehicle in a secure mode.
- the first warning function and the second braking function of the second stage 20 of the system 1 each contribute to gradually warn the driver or a remote operator and to stop the vehicle if necessary.
- An advantage of a vehicle position management system of the type described above resides in the fact that the state of the vehicle can be predicted in the short term and in the long term, which makes it possible to making an appropriate decision, for example waiting for the system 3 to operate again or putting the vehicle in the safety position.
- FIG. 3 An embodiment of a safety estimated position module 7 of a system 1 for managing the position of a vehicle of the type of that of FIG. 2 is described in more detail below with reference to FIG. 3. .
- the Safe Estimated Position Module 7 uses a complete vehicle model and monitoring system to determine safe positions from previous known positions.
- the invention proposes a safety estimated position module 7 using a combined longitudinal model and a lateral model of the vehicle, the longitudinal and lateral models being respectively associated with a. longitudinal and lateral controller, to generate multiple vehicle safety positions from the information stored in module 6.
- the module 7 can comprise means for combining a longitudinal model and a lateral model of the closed-loop vehicle so as to calculate subsequent safety states of the vehicle, in particular subsequent safety positions of the vehicle.
- the module 7 can comprise a side block 71 comprising a lateral model 30 of the vehicle and a longitudinal block 72 comprising a longitudinal model 40 of the vehicle.
- the side block 71 of the module 7 comprising the side model 30 of the vehicle is described below.
- the side block 71 of the module 7 can include a selector 31 for steering wheel angle information.
- the lateral model 30 of the vehicle is intended to receive as input a steered wheel angle measurement value supplied by the selector 31.
- the side block 71 of the module 7 may further comprise a model of a steered wheel actuator 33.
- the selector 31 is intended to check, at the frequency of the estimated safety position module 7, whether a new steering wheel angle measurement is available. If not, the value generated by the steer wheel actuator model 33 is used as input to the side model 30 of the vehicle as a steer wheel angle measurement.
- the frequency of the estimated safety position module 7 is for example of the order of 100 Hz.
- the lateral model 30 of the vehicle is intended in particular to provide a measured value of the angular yaw rate ⁇ v .
- the state vector is:
- C f and C r the cornering stiffness in the front and rear wheel respectively
- V x the vehicle speed
- m the vehicle mass
- l z the moment of inertia
- a and b the distance between the vehicle's center of gravity and the front and rear wheel respectively.
- the lateral model 30 uses as input the measurement of the angle of the steering wheel on the one hand and the longitudinal speed obtained from the longitudinal model 40 on the other hand.
- the lateral velocity v y and the angular yaw velocity ⁇ v are obtained at the output of the lateral model 30.
- the side block 71 of the module 7 can further include a side controller 35 for autonomous vehicles.
- the operation of such a lateral controller 35 can be based on a minimization of the angular yaw rate ⁇ v between the current trajectory of the vehicle and the desired trajectory of the vehicle.
- the desired trajectory can be calculated from the data of a camera (or any other sensor) to generate a set of waypoints.
- the lateral controller 35 is intended to receive as input the angular yaw rate ⁇ v supplied by the lateral model 30 on the one hand and an angular yaw rate supplied by another model of the vehicle (corresponding to a reference trajectory).
- the lateral controller 35 is intended to compare these two angular yaw rate values corresponding respectively to the desired trajectory and to the reference trajectory.
- ⁇ u v k gain ( ⁇ vsdesired - ⁇ vmeasured ) with: kgain a parameter, depending on the speed, making it possible to obtain a good performance of following the desired trajectory.
- the steered wheel angle control u v obtained at the output of the lateral controller 35 is supplied at the input of the steered wheel actuator model 33.
- a block 71 or overall lateral system is thus obtained, comprising the lateral model 30 of the vehicle, the vehicle side controller 35 and the steer wheel actuator model 33.
- the longitudinal block 72 of the module 7 can include a speed information selector 41.
- the longitudinal block 72 of the module 7 can further include a longitudinal controller 45 for autonomous vehicles.
- the longitudinal model 40 of the vehicle is intended to receive as input a speed command supplied by the longitudinal controller 45 of the vehicle.
- the operation of the longitudinal controller 45 of the vehicle can be based on minimizing the speed error between the longitudinal speed V x supplied by the speed information selector 41 and the desired speed on the reference path.
- the longitudinal speed value v x used in the longitudinal controller 45 of the vehicle, in the lateral model 30 of the vehicle and in the safety position computer 50, can be supplied by the speed information selector 41.
- One function of the speed information selector 41 is to check, at the frequency of the safety estimated position module 7, whether a new longitudinal speed measurement is available. If this is not the case, the measured safety speed value generated by the longitudinal model 40 of the vehicle is used.
- the longitudinal model 40 of the vehicle is intended to output a safety speed measurement V x .
- the longitudinal model 40 of the vehicle can be described by a second order transfer function connecting the speed control V c (s) to the speed measurement V x (s):
- An advantage of a longitudinal model 40 of the vehicle of the type described above lies in the fact that it makes it possible to optimally take into account the longitudinal response of the vehicle.
- FIG. 4 makes it possible to compare a given speed control profile V c (curve 101), the speed measured by an on-board sensor (curve 102) and the speed V x obtained from the longitudinal model 40 of the vehicle (curve 103). As is clearly visible in FIG. 4, the longitudinal model 40 perfectly follows the actual response of the vehicle.
- the safety position computer 50 is used to obtain the derivatives , safety position coordinates, in particular from the global equations of motion below: [Math 9] [Math 9]
- the safety position coordinates X, Y are obtained by integration of their respective derivative
- the values X, Y obtained at the output of the safety position computer 50 are the outputs of the estimated safety position module 7.
- module 7 estimates the next position at its frequency, updating the available data (trajectory or speed or steering wheel angle measurements) between two consecutive position points. We thus obtain a set of X, Y positions which are then transmitted to the safety assessor 8 to obtain the ellipse in which the vehicle should be located and its median.
- the output of the safety evaluator 8 is checked against the current vehicle position obtained from system 3, thereby determining the quality of the current vehicle position obtained from system 3 and providing the position. final p f of the vehicle at this moment.
- the output of module 9 is used as a new vehicle position which is returned (by feedback) to the safety position storage module 6 either as a single point (in case the current vehicle position obtained from the system 3 is reliable) or as a point cloud (when system 3 provides more than one erroneous position value).
- An advantage of a system 1 of the type described above lies in the fact that it makes it possible to predict the state of the vehicle taking into account a dynamic model of the vehicle and a controller in a future time horizon. As a result, the movement of the vehicle can be predicted taking into account the action of the controller in the future. This makes it possible to improve the lateral response of the vehicle by suppressing the oscillations of the system 1.
- Another advantage of a system 1 of the type described above lies in the fact that it makes it possible to maximize the safety of the autonomous vehicle while avoiding the use of autonomous driving sensors.
- a system 1 of the type described above makes it possible to estimate the future position of the vehicle with increased precision.
- Such a system 1 is capable of estimating subsequent safety positions of the vehicle with a frequency of up to 100 Hz, that is to say significantly higher than the frequency of commonly used positioning systems.
- Such a system 1 is developed in a short-term and long-term horizon to identify temporary faults (i.e. short periods of error) or failures (i.e. long error periods) in the automated vehicle location system 3, in order to correct these errors or to generate actions to put the vehicle in a secure mode, in particular automatic safety braking maneuvers in the event of a breakdown.
- temporary faults i.e. short periods of error
- failures i.e. long error periods
- the system 1 can include means for correcting the position of the vehicle in the event of temporary errors.
- the system 1 may include an alert system, in particular visual or haptic or audible, for a driver or a remote operator to indicate a long-term error or failure and to activate an emergency braking maneuver.
- the warning system in particular visual or haptic or audible, can include an indicator which can be installed in the display means 21.
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Human Computer Interaction (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Navigation (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1912223A FR3102879B1 (fr) | 2019-10-30 | 2019-10-30 | Système et procédé de gestion de la position d’un véhicule autonome. |
| PCT/EP2020/080564 WO2021084096A1 (fr) | 2019-10-30 | 2020-10-30 | Système et procédé de gestion de la position d'un véhicule autonome |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4051986A1 true EP4051986A1 (fr) | 2022-09-07 |
Family
ID=69903279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20796847.0A Pending EP4051986A1 (fr) | 2019-10-30 | 2020-10-30 | Système et procédé de gestion de la position d'un véhicule autonome |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20230294733A1 (fr) |
| EP (1) | EP4051986A1 (fr) |
| JP (1) | JP7650272B2 (fr) |
| KR (1) | KR20220084403A (fr) |
| CN (1) | CN114902015A (fr) |
| FR (1) | FR3102879B1 (fr) |
| WO (1) | WO2021084096A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20260042407A1 (en) * | 2024-08-06 | 2026-02-12 | Qualcomm Incorporated | Advanced temperature measures for autonomous driving |
| CN120382909B (zh) * | 2025-06-30 | 2025-09-23 | 重庆长安汽车股份有限公司 | 驾驶行为预测方法、驾驶行为预测模型训练方法及装置 |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5359529A (en) * | 1992-05-15 | 1994-10-25 | Zexel Corporation | Route guidance on/off-route state filter |
| JP4229358B2 (ja) | 2001-01-22 | 2009-02-25 | 株式会社小松製作所 | 無人車両の走行制御装置 |
| JP2004271293A (ja) | 2003-03-07 | 2004-09-30 | Navitime Japan Co Ltd | ナビゲーション装置、ナビゲーション方法及びプログラム |
| JP4345779B2 (ja) | 2006-07-13 | 2009-10-14 | トヨタ自動車株式会社 | ナビゲーション装置、位置検出方法 |
| CN101159091B (zh) * | 2007-10-15 | 2010-06-02 | 北京交通大学 | 一种列车卫星定位与信息传输系统 |
| JP5270184B2 (ja) * | 2008-02-13 | 2013-08-21 | 古野電気株式会社 | 衛星航法/推測航法統合測位装置 |
| JP5354931B2 (ja) * | 2008-02-29 | 2013-11-27 | 古野電気株式会社 | 衛星航法/推測航法統合測位装置 |
| JP5609073B2 (ja) * | 2009-06-16 | 2014-10-22 | カシオ計算機株式会社 | 測位装置、測位方法およびプログラム |
| FR2964751B1 (fr) * | 2010-09-10 | 2012-10-26 | Thales Sa | Procede de correction d'estimation de position par selection de mesures de pseudo-distances |
| JP5122678B1 (ja) * | 2011-12-09 | 2013-01-16 | 東京計器株式会社 | 衛星航法システムを用いた位置出力装置 |
| JP6521753B2 (ja) | 2015-06-09 | 2019-05-29 | 株式会社Subaru | 車両の測位システム |
| FR3054684B1 (fr) * | 2016-07-29 | 2018-08-24 | Institut Vedecom | Systeme de pilotage d’un vehicule autonome |
| KR20180091357A (ko) * | 2017-02-06 | 2018-08-16 | 한국전자통신연구원 | 추측 항법을 이용한 자율주행 차량의 제어 방법 및 장치 |
| US11164459B2 (en) * | 2017-03-14 | 2021-11-02 | Hyundai Mobis Co., Ltd. | Apparatus and method of safety support for vehicle |
| WO2019157193A1 (fr) * | 2018-02-09 | 2019-08-15 | Nvidia Corporation | Commande de véhicules autonomes au moyen de temps d'arrivée sûrs |
| WO2019191313A1 (fr) * | 2018-03-27 | 2019-10-03 | Nvidia Corporation | Fonctionnement à distance de véhicules utilisant des environnements de réalité virtuelle immersive |
| FR3083306B1 (fr) * | 2018-06-29 | 2020-07-24 | Safran Electronics & Defense | Procede d’assistance a la navigation |
| GB2610938B (en) * | 2018-10-30 | 2023-09-06 | Motional Ad Llc | Redundancy in autonomous vehicles |
| US10852746B2 (en) * | 2018-12-12 | 2020-12-01 | Waymo Llc | Detecting general road weather conditions |
| US11119482B2 (en) * | 2019-02-07 | 2021-09-14 | GM Global Technology Operations LLC | System and method for control of an autonomous vehicle |
| PL3722182T3 (pl) * | 2019-04-12 | 2025-08-04 | Hitachi Rail Gts Deutschland Gmbh | Sposób bezpiecznego i autonomicznego określania informacji o położeniu pociągu na torach |
| EP3966081B1 (fr) * | 2019-05-08 | 2026-02-25 | Volvo Autonomous Solutions AB | Procédé destiné à déterminer si une instruction de commande de véhicule empêche une future manoeuvre de sécurité du véhicule |
| DE102019123538A1 (de) * | 2019-09-03 | 2021-03-04 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Vorrichtung zur Ermittlung einer Trajektorie eines Fahrzeugs |
| US11618463B1 (en) * | 2022-06-30 | 2023-04-04 | Plusai, Inc. | Modified minimal risk maneuver using sensor input |
-
2019
- 2019-10-30 FR FR1912223A patent/FR3102879B1/fr active Active
-
2020
- 2020-10-30 EP EP20796847.0A patent/EP4051986A1/fr active Pending
- 2020-10-30 WO PCT/EP2020/080564 patent/WO2021084096A1/fr not_active Ceased
- 2020-10-30 CN CN202080090309.8A patent/CN114902015A/zh active Pending
- 2020-10-30 KR KR1020227017582A patent/KR20220084403A/ko active Pending
- 2020-10-30 JP JP2022525886A patent/JP7650272B2/ja active Active
- 2020-10-30 US US17/773,483 patent/US20230294733A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| FR3102879A1 (fr) | 2021-05-07 |
| KR20220084403A (ko) | 2022-06-21 |
| CN114902015A (zh) | 2022-08-12 |
| JP7650272B2 (ja) | 2025-03-24 |
| US20230294733A1 (en) | 2023-09-21 |
| FR3102879B1 (fr) | 2024-09-13 |
| JP2023501312A (ja) | 2023-01-18 |
| WO2021084096A1 (fr) | 2021-05-06 |
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