CN109910019A - A kind of robot hydraulic-driven cradle head closed-loop control system - Google Patents
A kind of robot hydraulic-driven cradle head closed-loop control system Download PDFInfo
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- CN109910019A CN109910019A CN201910111880.2A CN201910111880A CN109910019A CN 109910019 A CN109910019 A CN 109910019A CN 201910111880 A CN201910111880 A CN 201910111880A CN 109910019 A CN109910019 A CN 109910019A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/16—Programme controls
- B25J9/1602—Programme controls characterised by the control system, structure, architecture
- B25J9/161—Hardware, e.g. neural networks, fuzzy logic, interfaces, processor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
- B25J9/16—Programme controls
- B25J9/1628—Programme controls characterised by the control loop
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- Automation & Control Theory (AREA)
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Abstract
The invention discloses a kind of robot hydraulic-driven cradle head closed-loop control systems, driving mechanism includes direct current generator, direct current generator is connected with gear pump, executing agency includes hydraulic rotation joint, control mechanism includes host computer, host computer is connected by USB interface with slave computer, pressure transmitter is housed on the oil inlet pipe and oil outlet pipe of three-position four-way electromagnetic directional valve, pressure transmitter is connected with data acquisition card, potentiometric sensor is connected with data acquisition card, data acquisition card is further connected with host computer, it is connected between host computer and motor driver by CAN bus communication module.The present invention to the detection of oil inlet, oil outlet pressure value and accordingly adjusts PWM duty cycle, to the real-time detection of hydraulically-driven hydraulic cradle head rotational angle, oil inlet and oil outlet pressure, timely adjustment is carried out to motor speed, to form closed feedback loop, the stationarity for guaranteeing rotation process, realizes the accuracy of motion control.
Description
It is on November 22nd, 2016 that the application, which is for the applying date, and application No. is CN201611039763.2, denominations of invention
The division proposed for the invention of " a kind of robot hydraulic-driven cradle head closed-loop control system ".
Technical field
The invention belongs to technical field of robot control, in particular it relates to which a kind of robot hydraulic-driven rotates
Joint closed-loop control system.
Background technique
Cradle head is most widely used a kind of joint in current industrial robot field.General cradle head mostly uses
Motor direct-drive, and it is less by the cradle head of hydraulic-driven.Since hydraulic drive is compressible etc. in the presence of leakage, transmission fluid
Problem is difficult to accurate control so that moving to it.Moreover, being easy to produce impact when load changes.Conventional method
Proportional control solenoid valve is mostly used to control flow, but proportional control solenoid valve is expensive, and high-end product is mostly
Foreign country is monopolized, and causes to control higher cost.Therefore need that a kind of low in cost and position control of control is accurate, movement is flat at present
The preferable control system of stability and its method.
Number of patent application is that 201310567608.8 Chinese invention patents disclose a kind of closing based on hydraulic control mode
Ring Force control system and control method obtain power closed loop control parameters according to the controller module and execute the voice and believe
Number, and to setting hydraulic cylinder output stepping-in amount according to the control parameter and judging whether to power output control, if so, described
DSP module samples the drag force of the feedback measuring cell detection, and calculates the size of the drag force as power closed-loop control
The force feedback value of method, the DSP module further according to the voice module obtain power closed loop control parameters and the force feedback value into
Row increment PI calculates, and using the value after calculating as the input value of hydraulic control component.The closed loop power control that the invention can provide
System and control method can provide safely and reliably drag force in fracture of lower arm operation for patient, but the invention is defeated in power
Operation stability is poor in control out.
Number of patent application discloses a kind of revolute joint driving device, including driving machine for 201410119355.2
Structure and execution output mechanism；Driving mechanism includes servo motor and hydraulic pump, and executing output mechanism includes two groups disposed in parallel
The piston space of hydraulic cylinder, two groups of hydraulic cylinders is connected with swing rod, and at both ends, the drive draft link of piston can be put with its centre of gyration
It is dynamic；Robot components are connected at the centre of gyration of swing rod and rotate with the swing of swing rod；Driving device further includes detection mould
Block, processing module and electric machine controller.By using servo motor driving hydraulic actuating mechanism output, output power can have
Effect solves the demand that rotation operation robot needs high-power, cramped construction cradle head.It is driven by using unilateral bearing,
Realize the unidirectional turnover movement of the intermittence of transmission shaft.By using the mating reaction of transmitter and amplifier, effectively adjustment machine
The amount of spin of people's component, but invention operation stability in power output control is poor.
Summary of the invention
In order to overcome the above problems of the prior art, the present invention provides a kind of robot hydraulic-driven cradle head
Closed-loop control system, including driving mechanism, executing agency and control mechanism, power module are system power supply, it is characterised in that: are driven
Motivation structure includes direct current generator, and direct current generator is connected with gear pump, and executing agency includes hydraulic rotation joint, and control mechanism includes
Host computer, control system further include motor driver, data acquisition card, three-position four-way electromagnetic directional valve, and host computer is connect by USB
Mouthful be connected with slave computer, gear pump is connected with three-position four-way electromagnetic directional valve, the oil circuit of three-position four-way electromagnetic directional valve with it is hydraulic
Cradle head is connected, and pressure transmitter, pressure inverting are housed on the oil inlet pipe and oil outlet pipe of three-position four-way electromagnetic directional valve
Device is connected with data acquisition card, and hydraulic rotation joint is equipped with potentiometric sensor, and potentiometric sensor is connected with data acquisition card, believes
Number capture card is further connected with host computer, is connected between host computer and motor driver by CAN bus communication module；
The motor is connected by shaft coupling with gear pump, and the output flow model of gear pump is Q=q*n*v/60, wherein
Q is flow；Q is that gear pump is averaged every turn of tidal stream amount；N is gear revolution speed；V is volumetric efficiency；When the load of hydraulic system is constant
When, the output flow of gear pump determines the diarthrodial velocity of rotation of hydraulic rotation；When load changes, hydraulic rotation joint
Movement speed be affected, correspondingly change gear pump output flow can offset this influence with improve hydraulic rotation joint turn
Dynamic stationarity；
The output circuit of the gear pump is connected with three-position four-way electromagnetic directional valve, and the pressure transmitter is connected to electromagnetism
The oil inlet pipeline and oil outlet pipeline of reversal valve, respectively inlet pressure transmitter, oil outlet pressure oscillation device, for surveying
The pressure value for measuring hydraulic system oil inlet pipe and oil outlet pipe, is converted into analog electrical signal simultaneously for the pressure value of pipeline oil respectively
It is sent to data acquisition card；Inlet pressure transmitter and oil inlet overflow valve are both connected on oil inlet pipeline, and oil inlet overflows
It flows valve and provides overload protection for oil inlet pipeline；Oil outlet pressure transmitter and oil outlet overflow valve are all connected to oil outlet pipeline
On, oil outlet overflow valve provides certain back pressure for oil outlet pipeline；
Wherein, after the host computer receives oil inlet and oil outlet pressure value, calculate pressure difference △ P=Pi-Po, Pi be into
Hydraulic fluid port pressure value, Po are oil outlet pressure value；According to pressure difference △ P, judge whether load changes, and according to the change of load
Change the value adjusted in real time for controlling the duty ratio D of the PWM of motor speed, host computer leads to the value of duty ratio D by CAN bus
Letter module is sent to motor driver, and motor driver controls DC motor speed according to obtained PWM value.
Further, USB module connection is turned by RS232 between the data acquisition card and host computer, RS232 turns USB
Module one end is connected with data acquisition card, and the other end is connected with the USB interface of host computer, data acquisition card by pressure transmitter with
And the pressure value and hydraulic rotation joint position of potentiometric sensor transmission are sent to host computer.
Further, the solenoid directional control valve is used to after hydraulic rotation joint reaches target position convert to middle-position machine
Locking for energy, realization oil inlet and oil outlet, guarantees the locking of position, when hydraulic rotation joint needs to change rotation direction,
It is diarthrodial into and out of hydraulic fluid port that solenoid directional control valve changes hydraulic rotation by the movement of valve position.
Further, the potentiometric sensor is for detecting the diarthrodial position of hydraulic rotation and sending to data acquisition card.
Beneficial effect
The present invention provides a kind of robot hydraulic-driven cradle head closed-loop control system and control method, by oil inlet
Mouthful, the detection of oil outlet pressure value and corresponding adjusting PWM duty cycle D, to hydraulic rotation articulation angle, oil inlet and fuel-displaced
The real-time detection of mouth pressure carries out timely adjustment to motor speed, to form closed feedback loop, realizes hydraulic rotation joint
To being adaptively adjusted in time for load variation, guarantee the stationarity of rotation process, by the real-time detection to location information, realizes
The accuracy of motion control.
Detailed description of the invention
Fig. 1 is robot hydraulic-driven cradle head closed-loop control system annexation figure；
Fig. 2 is robot hydraulic-driven cradle head closed loop control method flow diagram.
Specific embodiment
In order to be best understood from technical solution of the present invention and advantage, below by way of specific embodiment, and in conjunction with attached drawing pair
The present invention is described further.In addition, direct current generator and motor described in description of the invention are identical concept, direct current generator
Driver and motor driver are identical concept, and three-position four-way electromagnetic directional valve and solenoid directional control valve are identical concept.
Embodiment 1.1
As shown in Figure 1, being a kind of robot hydraulic-driven cradle head closed-loop control system provided by the invention, including drive
Motivation structure, executing agency and control mechanism, driving mechanism include direct current generator 5 and gear pump 6, direct current generator 5 and 6 phase of gear pump
Even, executing agency includes hydraulic rotation joint 12, and control mechanism includes host computer 1, and host computer 1 calculates pressure transmitter and detects
Inlet pressure value and oil outlet pressure value difference, when pressure difference increase when, illustrate load increase, host computer increase PWM
Duty ratio D, motor accelerate to adapt to the increase of load；When pressure difference reduces, illustrate that load reduces, host computer reduces PWM and accounts for
Sky ratio D, decelerating through motor is to adapt to the reduction loaded, the hydraulic rotation joint current location that host computer detects potentiometric sensor
Compared with the real-time perfoming of target position, when the two is consistent, PC control solenoid directional control valve goes to Median Function, to realize
The locking of position.
The system further includes slave computer 2, CAN bus communication module 3, motor driver 4, data acquisition card 7, potentiometric sensors
Device 10, three-position four-way electromagnetic directional valve 11, oil inlet overflow valve, oil outlet overflow valve 14.
Pressure transmitter includes inlet pressure transmitter 8 and oil outlet pressure transmitter 9, inlet pressure transmitter 8
It is connected to oil inlet pipe, oil outlet pressure transmitter 9 is connected to oil outlet pipe, measures the pressure value into and out of oil pipe line respectively；Into
Hydraulic fluid port pressure transmitter 8, oil outlet pressure transmitter 9 are connected to data acquisition card 7, and the pressure value of pipeline oil is converted to mould
Quasi- electric signal (current value) is simultaneously sent to data acquisition card 7.
Potentiometric sensor 10 is connected to hydraulic rotation joint 12, for measuring the diarthrodial current operation angle of hydraulic rotation,
The diarthrodial angular displacement of hydraulic rotation is converted into corresponding voltage signal.
Data acquisition card 7 is connected to host computer 1, for acquiring inlet pressure transmitter 8, oil outlet pressure transmitter 9
The signal measured with potentiometric sensor 10, and send the signal in host computer 1.
Control method as shown in Fig. 2, host computer 1 by data acquisition card 7 obtain into and out of oil pipe line pressure value signal and
The position signal in hydraulic rotation joint 12 calculates pressure difference value △ P according to import and export loine pressure value signal, according to pressure difference
△ P judges whether load changes, and adjusts the duty for controlling the PWM of 9 revolving speed of motor in real time according to the variation of load
Value than D；The value of duty ratio D is sent to motor driver 4, motor driver by CAN bus communication module 3 by host computer 1
5 revolving speed of direct current generator is controlled according to obtained PWM value.
Direct current generator 5 is connect with gear pump 6, the performance curve of conjunction gear wheel pump 6, establishes the output flow mould of gear pump 6
Type is that (each letter of above formula represents Q (ml)=q*n*v/60: Q: flow；Q: the average every turn of tidal stream amount (ml/ turns) of gear pump and gear
Structure it is related；N: gear revolution speed, (rev/min)；V: volumetric efficiency).The revolving speed of direct current generator 5 determines gear pump 6
Output flow.When the load of hydraulic system is constant, the output flow of gear pump 6 determines the diarthrodial rotation speed of hydraulic rotation
Degree.When load changes, the diarthrodial movement speed of hydraulic rotation is affected, and correspondingly changes 6 output flow of gear pump
This influence can be offset, so as to improve the stationarity of hydraulic rotation articulation.
Specifically, the relationship of duty ratio D in PWM and pressure difference △ P is simplified are as follows: D=κ △ P (κ is proportionality coefficient), when
Pressure difference △ P increases, and illustrates that load increases, motor 5 need to be made to accelerate, host computer 1 increases accordingly duty ratio D, and is sent to
To motor driver 4,4 driving motor 5 of motor driver accelerates, to adapt to the instantaneous increase of load；Vice versa.
Host computer 1 obtains the diarthrodial rotational angle of hydraulic rotation by data acquisition card 7.1 real-time judge of host computer is current
Whether rotational angle reaches target rotation angle, such as reaches designated position, then machine 1 gives 2 signal of slave computer, and slave computer 2 controls corresponding electricity
The on-off of magnetic relay converts the valve body of solenoid directional control valve 11 to Median Function, realizes the locked of oil inlet and oil outlet, this
When hydraulic rotation joint locked in current location, primary rotation task terminates.When task start next time, host computer according to appoint
Business first judges the diarthrodial rotation direction of hydraulic rotation, and correspondingly controls solenoid directional control valve according to above-mentioned steps according to rotation direction
11。
Specifically, the calculation formula of pressure difference is △ P=Pi-Po (Pi: inlet pressure, Po: oil outlet pressure)；Letter
USB module connection is turned by RS232 number between capture card 7 and host computer 1, RS232 turns USB module one end and data acquisition card 7
It is connected, the other end is connected with the USB interface of host computer 1.RS232, which turns USB module, may be implemented the serial interface of data acquisition card 7
With the conversion of the USB interface of host computer 1, to realize the communication between data acquisition card and host computer.
It is connected between host computer 1 and DC motor driver 4 by CAN bus communication module 3, host computer 1 and CAN bus
Communication module 3 is connected by USB connection, CAN bus communication module 3 with motor driver 4.
Host computer 1 is connected by USB with slave computer 2, and slave computer 2 controls electromagnetic relay, gives electromagnetic relay switch amount,
Electromagnetic relay controls the power on/off of the both ends electromagnet of solenoid directional control valve 11 to realize the commutation of solenoid directional control valve 11.
Robot hydraulic-driven cradle head closed-loop control system of the invention further includes power module, respectively host computer
1 (220V), slave computer 2 (5V), data acquisition card 7 (5V), motor driver 4 (24V), solenoid directional control valve 11 (24V) etc. provide
Power supply necessary to working normally.
Robot hydraulic-driven cradle head closed loop control method specifically includes the following steps:
Step 1: starting direct current generator 4, direct current generator 4 are rotated according to default PWM duty cycle D0；
Step 2: the current location and target position to be reached that host computer 1 is returned according to potentiometric sensor 10, judgement
Hydraulic rotation articulation direction；
Step 3: host computer 1 sends the corresponding command to slave computer 2, and the valve body of control solenoid directional control valve 11 is moved to corresponding positions
It sets, is opened into and out of hydraulic fluid port, hydraulic rotation joint starts turning；
Step 4: host computer 1 calculates pressure according to the pressure value that inlet pressure transmitter and oil outlet pressure transmitter return
Power difference △ P adjusts PWM duty cycle D according to aforementioned rule；
Step 5: DC motor driver 4 realizes the acceleration or deceleration of direct current generator 5 according to newest duty ratio D；
Step 6: whether the hydraulic rotation joint position information real-time judge that host computer 1 is returned according to potentiometric sensor 10 arrives
Up to target position, if reaching, 7 are thened follow the steps, it is no to then follow the steps 4；
Step 7: host computer 1 sends instruction to slave computer 2, and control 11 valve body of solenoid directional control valve is moved to Median Function, into,
Oil outlet is locked, and hydraulic rotation joint position locking a, subtask terminates；
Step 8: direct current generator 5 keeps rotation, and oil inlet overflow valve overflow waits next subtask.
It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or some or all of the technical features is carried out
Equivalent replacement；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (4)
1. a kind of robot hydraulic-driven cradle head closed-loop control system, including driving mechanism, executing agency and control mechanism,
Power module is system power supply, it is characterised in that: driving mechanism includes direct current generator, and direct current generator is connected with gear pump, is executed
Mechanism includes hydraulic rotation joint, and control mechanism includes host computer, control system further include motor driver, data acquisition card,
Three-position four-way electromagnetic directional valve, host computer are connected by USB interface with slave computer, gear pump and three-position four-way electromagnetic directional valve phase
Even, the oil circuit of three-position four-way electromagnetic directional valve is connected with hydraulic rotation joint, the oil inlet pipe of three-position four-way electromagnetic directional valve with
Pressure transmitter is housed, pressure transmitter is connected with data acquisition card, and hydraulic rotation joint is passed equipped with current potential in oil outlet pipe
Sensor, potentiometric sensor are connected with data acquisition card, and data acquisition card is further connected with host computer, host computer and motor driven
It is connected between device by CAN bus communication module；
The motor is connected by shaft coupling with gear pump, and the output flow model of gear pump is Q=q*n*v/60, and wherein Q is
Flow；Q is that gear pump is averaged every turn of tidal stream amount；N is gear revolution speed；V is volumetric efficiency；When the load of hydraulic system is constant,
The output flow of gear pump determines the diarthrodial velocity of rotation of hydraulic rotation；When load changes, hydraulic rotation is diarthrodial
Movement speed is affected, this influence can be offset to improve hydraulic rotation articulation by correspondingly changing gear pump output flow
Stationarity；
The output circuit of the gear pump is connected with three-position four-way electromagnetic directional valve, and the pressure transmitter is connected to electromagnetic switch
The oil inlet pipeline and oil outlet pipeline of valve, respectively inlet pressure transmitter, oil outlet pressure oscillation device, for measuring liquid
The pressure value of pipeline oil is converted into analog electrical signal respectively and sent by the pressure value of pressure system oil inlet pipe and oil outlet pipe
To data acquisition card；Inlet pressure transmitter and oil inlet overflow valve are both connected on oil inlet pipeline, oil inlet overflow valve
Overload protection is provided for oil inlet pipeline；Oil outlet pressure transmitter and oil outlet overflow valve are all connected on oil outlet pipeline,
Oil outlet overflow valve provides certain back pressure for oil outlet pipeline；
Wherein, after the host computer receives oil inlet and oil outlet pressure value, calculating pressure difference △ P=Pi-Po, Pi is oil inlet
Pressure value, Po are oil outlet pressure value；According to pressure difference △ P, judge whether load changes, and according to the variation of load reality
When adjust value for controlling the duty ratio D of the PWM of motor speed, the value of duty ratio D is communicated mould by CAN bus by host computer
Block is sent to motor driver, and motor driver controls DC motor speed according to obtained PWM value.
2. a kind of robot hydraulic-driven cradle head closed-loop control system as described in claim 1, it is characterised in that: described
USB module connection is turned by RS232 between data acquisition card and host computer, RS232 turns USB module one end and data acquisition card phase
Even, the other end is connected with the USB interface of host computer, the pressure that data acquisition card transmits pressure transmitter and potentiometric sensor
Value and hydraulic rotation joint position are sent to host computer.
3. a kind of robot hydraulic-driven cradle head closed-loop control system as described in claim 1, it is characterised in that: described
Solenoid directional control valve is used for after hydraulic rotation joint reaches target position conversion to Median Function, realizes oil inlet and oil outlet
It is locked, guarantee the locking of position, when hydraulic rotation joint needs to change rotation direction, shifting that solenoid directional control valve passes through valve position
It moves diarthrodial into and out of hydraulic fluid port to change hydraulic rotation.
4. a kind of robot hydraulic-driven cradle head closed-loop control system as described in claim 1, it is characterised in that: described
Potentiometric sensor is for detecting the diarthrodial position of hydraulic rotation and sending to data acquisition card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111880.2A CN109910019B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611039763.2A CN106671091B (en) | 2016-11-22 | 2016-11-22 | A kind of robot hydraulic-driven cradle head closed-loop control system |
| CN201910111880.2A CN109910019B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
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| CN201611039763.2A Division CN106671091B (en) | 2016-11-22 | 2016-11-22 | A kind of robot hydraulic-driven cradle head closed-loop control system |
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| CN109910019A true CN109910019A (en) | 2019-06-21 |
| CN109910019B CN109910019B (en) | 2021-02-09 |
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| CN201910111887.4A Active CN109927027B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201910111890.6A Active CN109927040B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201910111886.XA Active CN109940625B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201611039763.2A Active CN106671091B (en) | 2016-11-22 | 2016-11-22 | A kind of robot hydraulic-driven cradle head closed-loop control system |
| CN201910111891.0A Active CN109944844B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201910111888.9A Active CN109927038B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
| CN201910111885.5A Active CN109940624B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201910111889.3A Active CN109927039B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
| CN201910111880.2A Active CN109910019B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
| CN201910111884.0A Active CN109944843B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
| CN201910111883.6A Active CN109910020B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
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| CN201910111887.4A Active CN109927027B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201910111890.6A Active CN109927040B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201910111886.XA Active CN109940625B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201611039763.2A Active CN106671091B (en) | 2016-11-22 | 2016-11-22 | A kind of robot hydraulic-driven cradle head closed-loop control system |
| CN201910111891.0A Active CN109944844B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201910111888.9A Active CN109927038B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
| CN201910111885.5A Active CN109940624B (en) | 2016-11-22 | 2016-11-22 | Closed-loop control method for hydraulic drive rotary joint of robot |
| CN201910111889.3A Active CN109927039B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
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| CN201910111883.6A Active CN109910020B (en) | 2016-11-22 | 2016-11-22 | Robot hydraulic drive rotates joint closed-loop control system |
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| CN108716491B (en) * | 2018-05-28 | 2022-02-11 | 徐州燕大传动与控制技术有限公司 | Three-position five-way load port independent control multi-way valve with O-shaped neutral position function |
| CN109048904B (en) * | 2018-08-23 | 2020-11-10 | 中国船舶重工集团公司第七0七研究所 | Microminiature hydraulic servo control system and control method for exoskeleton robot |
| CN109591046B (en) * | 2019-01-08 | 2020-10-27 | 浙江大学 | Step-by-step blade type robot joint |
| CN110131228A (en) * | 2019-05-14 | 2019-08-16 | 北京工业大学 | A kind of Speed On-off Valve flexible machinery gripping tool system and device and control method |
| US11679508B2 (en) * | 2019-08-01 | 2023-06-20 | Fanuc Corporation | Robot device controller for controlling position of robot |
| CN113007181A (en) * | 2019-12-20 | 2021-06-22 | 中国科学院沈阳自动化研究所 | Underwater hydraulic system control and data acquisition device |
| CN111503077B (en) * | 2020-04-15 | 2021-05-25 | 中南大学 | Electro-hydraulic control system and control method of multi-degree-of-freedom hydraulic mechanical arm |
| US11368120B2 (en) * | 2020-05-22 | 2022-06-21 | Fisher Controls International Llc | Feature set and methods for a digital positioner |
| CN113236615A (en) * | 2021-04-07 | 2021-08-10 | 华南理工大学 | Hydraulic vibration hammer starting control system and implementation method thereof |
| CN113446287B (en) * | 2021-06-23 | 2024-01-05 | 河南航天液压气动技术有限公司 | Automatic zeroing system and method for 2D reversing valve based on machine learning algorithm |
| CN117450122B (en) * | 2023-12-25 | 2024-03-19 | 中联重科土方机械有限公司 | Hydraulic system, control method and rescue equipment |
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| CN109940625A (en) | 2019-06-28 |
| CN109927038B (en) | 2021-02-26 |
| CN109944844B (en) | 2021-01-05 |
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| CN109927027A (en) | 2019-06-25 |
| CN109940625B (en) | 2021-02-02 |
| CN109910019B (en) | 2021-02-09 |
| CN109927027B (en) | 2020-12-22 |
| CN109927038A (en) | 2019-06-25 |
| CN109927039A (en) | 2019-06-25 |
| CN109927040B (en) | 2021-01-01 |
| CN109944843A (en) | 2019-06-28 |
| CN109944844A (en) | 2019-06-28 |
| CN109910020A (en) | 2019-06-21 |
| CN109940624A (en) | 2019-06-28 |
| CN109927039B (en) | 2021-02-26 |
| CN106671091A (en) | 2017-05-17 |
| CN109940624B (en) | 2020-12-22 |
| CN106671091B (en) | 2019-04-26 |
| CN109927040A (en) | 2019-06-25 |
| CN109910020B (en) | 2020-12-11 |
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