CN110525411A - Electric parking brake and electronic parking braking method - Google Patents
Electric parking brake and electronic parking braking method Download PDFInfo
- Publication number
- CN110525411A CN110525411A CN201910941441.4A CN201910941441A CN110525411A CN 110525411 A CN110525411 A CN 110525411A CN 201910941441 A CN201910941441 A CN 201910941441A CN 110525411 A CN110525411 A CN 110525411A
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- Prior art keywords
- clamp
- motor
- friction plate
- parking braking
- parking
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- 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.)
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- 238000000034 method Methods 0.000 title claims description 10
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000012544 monitoring process Methods 0.000 claims description 15
- 230000004913 activation Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 6
- 238000011217 control strategy Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000000003 hoof Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
- Braking Arrangements (AREA)
Abstract
Disclosed by the invention is electric parking brake, including clamp and motor, the clamp are equipped with friction plate A, friction plate B, piston, screw rod and nut, the friction plate B is set to the opposite side friction plate A, the friction plate A is driven by piston and is moved, the piston is moved by the cooperation of screw rod and nut, rotation is driven by motor in the screw rod, it is characterized in that, the clamp outer wall is equipped with piezoelectric transducer, the piezoelectric transducer is attached at clamp and occurs at large curved deformation under clamping force effect, have no need to change clamp internal structure, the phenomenon that only can preventing brake disc insufficient clamping force from slipping by slope and excessively clamping and vehicle is caused to drag by outer patch piezoelectric transducer.
Description
Technical field
The present invention relates to vehicle braking parking technical fields, in particular to electric parking brake and electronic brake side
Method.
Background technique
For electronic brake system EPB instead of the mechanical hand brake device of drag-line rear wheel brake hoof, summary is whole
The layout design of vehicle.The working principle of electronic brake system is identical as mechanical parking brake, is to pass through electricity using mechanical clamp
Machine clamping brake block generates braking torque to realize the function of parking braking.Electronic brake system meets driving status item
It is automatically terminated when part.The improvement of operating characteristics and make making full use of for interior space, it receives praises from customers thus
One of function.The extension value-added functionality of EPB eliminates ramp starting, signal lamp wait and engine misses to slip by slope accident hidden
Suffer from, it is therefore prevented that some unnecessary accidents as caused by off one's guard improve safety.
Electronic brake system forgets the phenomenon that implementing parking braking after can preventing engine misses.Due to driven opening
The effect instead of mechanical hand brake ratchet wheel pawl device is closed, so that interior space arrangement becomes masterly, is beneficial to be promoted
The comfortable moved feelings of driver.
On the other hand, how (1) maintains appropriate enough clamping forces；(2) it prevents from dragging phenomenon caused by excessively clamping；
(3) malfunction and failure security response mode when electronic failure occurs is still project.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of electric parking brake and electronic parking braking method,
Have no need to change clamp internal structure, only by outer patch piezoelectric transducer can prevent brake disc insufficient clamping force slip by slope and
The phenomenon that excessively clamping and vehicle caused to drag.
In order to achieve the above object, the present invention is achieved by the following technical programs: electric parking brake, including clamp
And motor, the clamp are equipped with friction plate A, friction plate B, piston, screw rod and nut, the friction plate B is set to friction plate A phase
Opposite side, the friction plate A are driven by piston and are moved, and the piston is moved by the cooperation of screw rod and nut, the screw rod
Rotation is driven by motor, which is characterized in that the clamp outer wall is equipped with piezoelectric transducer, and the piezoelectric transducer is attached at clamp
Occur at large curved deformation under clamping force effect.
The motor uses DC brushless motor, and the motor is equipped with the rotary angle transmitter for acquiring rotor.
The piezoelectric transducer is associated with verification with rotary angle transmitter signal composition.Provide the superfluous of failsafe mode guarantee
Remaining measure realizes signals security mechanism.
The piezoelectric transducer and rotary angle transmitter pass the signal to MCU, and the MCU is determined according to control strategy algorithm
Motor is rotated to target position.
The MCU also receives EPB key-press input signal and ignition switch signal.
Electronic parking braking method, which is characterized in that if dbjective state is set up, parking braking locking, car slipping monitoring stops
Only；If dbjective state is invalid, parking braking stops locking；
The dbjective state establishment condition: wheel speed≤x kph before 2, meanwhile, wheel speed≤xx kph behind kph≤2 x, and light a fire
Switch is opened, the release of EPB switch button；
The invalid condition of dbjective state: wheel speed > x kph perhaps close after 1 by wheel speed > xx kph or ignition switch before 1
It closes.
When EPB key request, ECU judges input signal, if dbjective state is set up, completes parking braking, car slipping inspection
It surveys and stops, if target is invalid or EPB key discharges, parking braking status releasing；
Increase if speed occurs when parking braking, but driver is finished there is no bend the throttle and clamping again
In the case where, the monitoring activation of parking lock clamped condition, piezoelectric transducer feedback signal, calculating in conjunction with ramp angles signal needs
Clamping force is sought, transmission clamps request instruction again, and motor rotates implementation goal clamping force control；
If parking lock clamped condition monitoring activation, occur engine operation when bend the throttle or clamp again request hair
It send and finishes, then complete parking braking, car slipping detection stops；
If when the monitoring activation of parking lock clamped condition, when the release of EPB key or invalid target occurs, parking braking state
It releases.
When clamp outer wall, which is pressurized, generates bending deformation, piezoelectric transducer senses the variation of pressure, so that its charge point
Cloth changes, and resulting electric signal can be demarcated as wheel cylinder clamping force, is in the different operating condition feedbacks such as ramp with vehicle
Determine the wheel cylinder clamping force control for keeping the steady reliable parking of vehicle.
When the order that motor receives MCU is implemented to clamp driving, motor, which is rotated according to control algolithm according to given angle, to be driven
Screw rod, and then drive screw rod that nut ejector piston is pushed to eliminate the gap between friction plate, complete the movement for clamping brake disc.When
When friction plate applies clamping force to brake disc, clamp outer wall is generated deformation by expansionary force, and the charge variation of piezoelectric transducer is converged
Integrated micro voltage signal output, feeds back to MCU.
Rotary angle transmitter and piezoelectric transducer mutual cooperation verify each other, have monitored the parking braking of EPB to the maximum extent
State, from a safety viewpoint for, if the automobile EPB that runs at high speed breaks down, piezoelectric transducer monitors EPB target-like
State is invalid and braking pressurization occurs, and MCU can then control motor and abandon being not intended to brake；Same rotary angle transmitter monitors EPB
Dbjective state is invalid and braking pressurization occurs, and MCU can also control motor and abandon being not intended to brake, and guarantee vehicle traveling process
Security reliability.
Detailed description of the invention
Fig. 1 is clamp structural schematic diagram of the present invention；
Fig. 2 is clamp cantilever force schematic diagram；
Fig. 3 is system control architecture schematic diagram；
Fig. 4 is parking braking state transition graph；
Fig. 5 is EPB work condition state transition diagram；
Fig. 6 is motor load chart.
Specific embodiment
As depicted in figs. 1 and 2, electric parking brake, including clamp 1 and motor 2, the clamp 1 are equipped with friction plate A
11, friction plate B 12, piston 3, screw rod 4 and nut 5, the friction plate B 12 are set to 11 opposite side friction plate A, the friction
Piece A 11 is driven by piston 3 and is moved, and the piston 3 moved by screw rod 4 and the cooperation of nut 5, and the screw rod 4 is by motor
2 driving rotations, and then drive screw rod that nut ejector piston is pushed to eliminate the gap between friction plate, it completes to clamp the dynamic of brake disc
Make.
1 outer wall of clamp is equipped with piezoelectric transducer 6, and the piezoelectric transducer 6 is attached at clamp 1 under clamping force effect
Occur at large curved deformation, in the present embodiment, the piezoelectric transducer uses piezoceramic transducer, the friction plate B
12 are located at the inside of clamp cantilever 111, and piezoelectric transducer 6 is then attached at 111 outside of clamp cantilever, when friction plate A 11 is to friction plate
When the movement of B 12 is clamped brake disc 10, clamp cantilever 111 will receive outside pressure and generate Bending Deformation, piezoelectric sensing
Device 6 can sense.It is such to design the internal structure for having no need to change clamp, bow compass outer wall pressing electric transducer is only needed,
The clamped condition of brake disc can be reliably detected in real time.
If the motor for implementing clamping drive force is brush direct current motor, it is controlled, the corner of rotor is not required to pass
Sensor signal.In this case, the present invention can monitor the clamped condition of brake disc only with piezoelectric transducer, clamp shape
The detection of state can use motor load electric current and be demarcated, but motor load electric current is easier as calibration by temperature
Etc. factors influence.
If the motor for implementing clamping drive force is DC brushless motor, need to be arranged rotary angle transmitter to acquire electricity
Machine rotor, therefore, the motor 2 are equipped with the rotary angle transmitter 7 for acquiring rotor, solve motor and clamp compound electric
The problem of stream is vulnerable to ambient temperature effect, the accuracy that the reliability and performance for effectively improving system are realized.
As shown in figure 3, the piezoelectric transducer 6 is associated with verification, the piezoelectric transducer with 7 signal of rotary angle transmitter composition
6 and rotary angle transmitter 7 pass the signal to MCU 100, the MCU 100 determines motor 2 to target according to control strategy algorithm
Position rotation.The piezoelectric transducer 6 is connect by amplifying circuit 200 with MCU 100.
The MCU also receives EPB key-press input signal and ignition switch signal.
As shown in figure 4, electronic parking braking method:
Dbjective state establishment condition: wheel speed≤x kph before 2, meanwhile, wheel speed≤xx kph behind kph≤2 x, and ignition switch
It opens, the release of EPB switch button.
The invalid condition of dbjective state: wheel speed > x kph perhaps close after 1 by wheel speed > xx kph or ignition switch before 1
It closes.
201: if dbjective state is set up, parking braking locking, car slipping monitoring stops；
202: if dbjective state is invalid, parking braking stops locking.
As shown in figure 5, ECU judges input signal when EPB key request, if dbjective state is set up, parking system is completed
Dynamic, car slipping detection stops, if target is invalid or EPB key discharges, parking braking status releasing；
Increase if speed occurs when parking braking, but driver is finished there is no bend the throttle and clamping again
In the case where, parking lock clamped condition monitoring activation, piezoelectric transducer feedback signal calculates demand in conjunction with ramp angles signal
Clamping force, transmission clamp request instruction again, and motor rotates implementation goal clamping force control；
If parking lock clamped condition monitoring activation, occur engine operation when bend the throttle or clamp again request hair
It send and finishes, then complete parking braking, car slipping detection stops；
If when the monitoring activation of parking lock clamped condition, when the release of EPB key or invalid target occurs, parking braking state
It releases.
As shown in fig. 6, the electric current and velocity variations trend of motor are as shown in the figure when implementing to brake chuck clamping.Last
Clamping phase speed, electric current and pressure tend towards stability.
The clamping force of parking braking and upward slope descending level land can be demarcated at certain proportionate relationship according to real vehicle.When being
In the case that supply voltage of uniting changes and is in limiting ambient temperature, the clamping parameter demarcated in advance and the clamping actually occurred
Power has very large deviation.In this case the control target of control strategy algorithm is controlled by motor position and is realized；But it needs to press from both sides
Clamp force feedback just can guarantee that providing enough clamping forces prevents car slipping.Piezoelectric transducer directly measures clamp strain, this strain is such as
Clamping force is reflected in fact, thus EPB system realizes the feedback control of clamping force, improves the reliability of EPB system.
In addition such as figure 6 above can obtain rough folder for driving the current monitoring of clamping motor to feed back to a certain extent
The estimation of tight degree speculates.If when the case where piezoelectric transducer and rotary angle transmitter all fail, the current value of clamping motor is adopted
Sample monitoring, also has positive supporting function for the raising of security reliability.
The present invention is using position rotary angle transmitter signal and uses piezoceramic transducer signal monitoring parking braking disk
Clamped condition, and the heat-resistant stable of piezoceramic transducer ensure that parking braking of the automobile on different ramps
Required clamping force accurately controls.Since the control intervention for clamping force is highly controllable, in EPB for vehicle stability controller
When redundancy backup implementation when ESC or force aid system for braking fail acts on, the clamping of left and right sides motor control can be individually adjusted
Power prevents brake wheel locking from losing intact stability, improves the security reliability under automobile limiting case.
Claims (7)
1. electric parking brake, including clamp and motor, the clamp be equipped with friction plate A, friction plate B, piston, screw rod and
Nut, the friction plate B are set to the opposite side friction plate A, and the friction plate A is driven by piston and moved, and the piston passes through screw rod
Cooperation with nut is moved, and rotation is driven by motor in the screw rod, which is characterized in that the clamp outer wall is passed equipped with piezoelectricity
Sensor, the piezoelectric transducer are attached at clamp and occur at large curved deformation under clamping force effect.
2. electric parking brake according to claim 1, which is characterized in that the motor uses DC brushless motor,
The motor is equipped with the rotary angle transmitter for acquiring rotor.
3. electric parking brake according to claim 2, which is characterized in that the piezoelectric transducer and rotary angle transmitter
Signal composition association verification.
4. electric parking brake according to claim 3, which is characterized in that the piezoelectric transducer and rotary angle transmitter
MCU is passed the signal to, the MCU determines that motor is rotated to target position according to control strategy algorithm.
5. electric parking brake according to claim 4, which is characterized in that the MCU also receives EPB key-press input letter
Number and ignition switch signal.
6. electronic parking braking method according to claim 5, which is characterized in that
If dbjective state is set up, parking braking locking, car slipping monitoring stops；If dbjective state is invalid, parking braking stops
Only locking；
The dbjective state establishment condition: wheel speed≤x kph before 2, meanwhile, wheel speed≤xx kph behind kph≤2 x, and light a fire
Switch is opened, the release of EPB switch button；
The invalid condition of dbjective state: wheel speed > x kph perhaps close after 1 by wheel speed > xx kph or ignition switch before 1
It closes.
7. electronic parking braking method according to claim 6, which is characterized in that
When EPB key request, ECU judges input signal, if dbjective state is set up, completes parking braking, car slipping detection stops
Only, if target is invalid or EPB key discharges, parking braking status releasing；
Increase if speed occurs when parking braking, but driver is finished there is no bend the throttle and clamping again
In the case where, parking lock clamped condition monitoring activation, piezoelectric transducer feedback signal calculates demand in conjunction with ramp angles signal
Clamping force, transmission clamp request instruction again, and motor rotates implementation goal clamping force control；
If parking lock clamped condition monitoring activation, occur engine operation when bend the throttle or clamp again request hair
It send and finishes, then complete parking braking, car slipping detection stops；
If when the monitoring activation of parking lock clamped condition, when the release of EPB key or invalid target occurs, parking braking state
It releases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910941441.4A CN110525411A (en) | 2019-09-30 | 2019-09-30 | Electric parking brake and electronic parking braking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910941441.4A CN110525411A (en) | 2019-09-30 | 2019-09-30 | Electric parking brake and electronic parking braking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110525411A true CN110525411A (en) | 2019-12-03 |
Family
ID=68671111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910941441.4A Pending CN110525411A (en) | 2019-09-30 | 2019-09-30 | Electric parking brake and electronic parking braking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110525411A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135666A (en) * | 2020-09-04 | 2022-03-04 | 广州汽车集团股份有限公司 | Electronic P-gear-based parking method and electronic P-gear control system |
| CN114228686A (en) * | 2021-12-31 | 2022-03-25 | 长沙泊呈科技有限公司 | Parking and parking release control method |
| CN114740831A (en) * | 2022-06-09 | 2022-07-12 | 坤泰车辆系统(常州)股份有限公司 | Test bench, test method and EPB system for EPB model verification and parameter matching |
| CN115384464A (en) * | 2022-09-09 | 2022-11-25 | 中国第一汽车股份有限公司 | Electronic parking high-temperature re-clamping control method and device, vehicle and storage medium |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030164270A1 (en) * | 2002-01-17 | 2003-09-04 | Robert Bosch Gmbh | Self-boosting friction brake, device for measuring the coefficient of friction, and method for regulating a braking force |
| JP2003287063A (en) * | 2002-03-29 | 2003-10-10 | Nissin Kogyo Co Ltd | Electric disk brake |
| US20050247528A1 (en) * | 2002-07-26 | 2005-11-10 | Peter Schack | Actuation unit for an electromechanically-actuated disc brake |
| CN102015393A (en) * | 2008-03-26 | 2011-04-13 | 巴姆邦德尔运输有限公司 | Device for monitoring braking action |
| CN104401308A (en) * | 2014-10-11 | 2015-03-11 | 北京英创汇智科技有限公司 | Method for improving reliability of EPB (electrical park brake) based on piezoelectric ceramic sensor |
| CN104813060A (en) * | 2013-04-17 | 2015-07-29 | 意大利Itt有限责任公司 | Method for manufacturing a braking element with integrated sensor, in particular a brake pad, brake pad with integrated sensor, vehicle braking system and associated method |
| CN106032141A (en) * | 2015-03-19 | 2016-10-19 | 比亚迪股份有限公司 | Vehicle parking braking control system, method and vehicle |
| CN106828478A (en) * | 2017-01-21 | 2017-06-13 | 广州汽车集团股份有限公司 | Vehicle, electronic brake system and its control method |
| CN206904118U (en) * | 2017-05-26 | 2018-01-19 | 浙江万向系统有限公司 | After a kind of EPB in calipers assembly modified piston mounting means new structure |
| CN107614337A (en) * | 2015-06-01 | 2018-01-19 | Ntn株式会社 | Electrical braking device |
| DE102017211738A1 (en) * | 2016-09-21 | 2018-03-22 | Continental Teves Ag & Co. Ohg | wheel brake |
| CN108791247A (en) * | 2017-04-27 | 2018-11-13 | 丰田自动车株式会社 | Arrester control device, brake control method and brake control system |
| CN210554753U (en) * | 2019-09-30 | 2020-05-19 | 浙江力邦合信智能制动系统股份有限公司 | Electronic parking brake |
-
2019
- 2019-09-30 CN CN201910941441.4A patent/CN110525411A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030164270A1 (en) * | 2002-01-17 | 2003-09-04 | Robert Bosch Gmbh | Self-boosting friction brake, device for measuring the coefficient of friction, and method for regulating a braking force |
| JP2003287063A (en) * | 2002-03-29 | 2003-10-10 | Nissin Kogyo Co Ltd | Electric disk brake |
| US20050247528A1 (en) * | 2002-07-26 | 2005-11-10 | Peter Schack | Actuation unit for an electromechanically-actuated disc brake |
| CN102015393A (en) * | 2008-03-26 | 2011-04-13 | 巴姆邦德尔运输有限公司 | Device for monitoring braking action |
| CN104813060A (en) * | 2013-04-17 | 2015-07-29 | 意大利Itt有限责任公司 | Method for manufacturing a braking element with integrated sensor, in particular a brake pad, brake pad with integrated sensor, vehicle braking system and associated method |
| CN104401308A (en) * | 2014-10-11 | 2015-03-11 | 北京英创汇智科技有限公司 | Method for improving reliability of EPB (electrical park brake) based on piezoelectric ceramic sensor |
| CN106032141A (en) * | 2015-03-19 | 2016-10-19 | 比亚迪股份有限公司 | Vehicle parking braking control system, method and vehicle |
| CN107614337A (en) * | 2015-06-01 | 2018-01-19 | Ntn株式会社 | Electrical braking device |
| DE102017211738A1 (en) * | 2016-09-21 | 2018-03-22 | Continental Teves Ag & Co. Ohg | wheel brake |
| CN106828478A (en) * | 2017-01-21 | 2017-06-13 | 广州汽车集团股份有限公司 | Vehicle, electronic brake system and its control method |
| CN108791247A (en) * | 2017-04-27 | 2018-11-13 | 丰田自动车株式会社 | Arrester control device, brake control method and brake control system |
| CN206904118U (en) * | 2017-05-26 | 2018-01-19 | 浙江万向系统有限公司 | After a kind of EPB in calipers assembly modified piston mounting means new structure |
| CN210554753U (en) * | 2019-09-30 | 2020-05-19 | 浙江力邦合信智能制动系统股份有限公司 | Electronic parking brake |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135666A (en) * | 2020-09-04 | 2022-03-04 | 广州汽车集团股份有限公司 | Electronic P-gear-based parking method and electronic P-gear control system |
| CN114135666B (en) * | 2020-09-04 | 2023-04-25 | 广州汽车集团股份有限公司 | A parking method based on electronic P gear and electronic P gear control system |
| CN114228686A (en) * | 2021-12-31 | 2022-03-25 | 长沙泊呈科技有限公司 | Parking and parking release control method |
| CN114740831A (en) * | 2022-06-09 | 2022-07-12 | 坤泰车辆系统(常州)股份有限公司 | Test bench, test method and EPB system for EPB model verification and parameter matching |
| CN115384464A (en) * | 2022-09-09 | 2022-11-25 | 中国第一汽车股份有限公司 | Electronic parking high-temperature re-clamping control method and device, vehicle and storage medium |
| CN115384464B (en) * | 2022-09-09 | 2023-11-21 | 中国第一汽车股份有限公司 | Electronic parking high-temperature re-clamping control method and device, vehicle and storage medium |
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