CN107444373B - Electronic brake system with electronic dynamic control function - Google Patents
Electronic brake system with electronic dynamic control function Download PDFInfo
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- CN107444373B CN107444373B CN201610380408.5A CN201610380408A CN107444373B CN 107444373 B CN107444373 B CN 107444373B CN 201610380408 A CN201610380408 A CN 201610380408A CN 107444373 B CN107444373 B CN 107444373B
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- 230000000994 depressogenic effect Effects 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
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- 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
- B60T13/741—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 acting on an ultimate actuator
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- 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/82—Brake-by-Wire, EHB
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- Regulating Braking Force (AREA)
Abstract
An electric brake system includes: a driving stability system control unit; an electronic parking brake control unit; an electronic parking brake operation switch; and a motion mode switch. The running stability system control unit instructs the service brake system to apply the braking force to the corresponding rear wheel in a case where the following conditions are all satisfied: the electronic brake system is set in a sport mode; the vehicle runs at a speed higher than a brake mode switching speed value; the driver does not input a service braking instruction; and an electronic parking brake operation switch is operated by a driver to generate a parking brake signal. The ride stability system control unit and the electronic parking brake control unit may be combined into one control assembly.
Description
Technical Field
The present application relates to an electronic brake system for a vehicle having an improved dynamic control function. The application also relates to a related electronic dynamic control module, a driving stability system control unit and a control assembly.
Background
An electronic brake system, commonly referred to as an electronic hand brake, is a technology for implementing parking brake by an electronic control manner, and applies a braking force to a rear wheel of a vehicle by electronically controlling a brake element, such as a brake disc, to implement parking brake. The electronic brake system is started by one operating button, a parking brake handle is replaced, and the space inside the cab can be saved. In addition, the operation button is simple and labor-saving, and the operation intensity of a driver is reduced.
In addition, the electric brake system can also be used for braking during driving. According to one prior art, if the operating button of the electronic braking system is activated and remains activated during the driving of the vehicle, the service computer controls the service braking system to brake all the front and rear wheels of the vehicle, and the electronic braking system simultaneously participates in braking the rear wheels of the vehicle until the vehicle finally comes to a standstill. In addition, the braking by the electronic braking system can also be used as an emergency deceleration method when a brake pedal is not reacted in the driving process, so that the safety of the vehicle in the driving process is greatly improved.
However, the braking function of the electric brake system in conjunction with the service brake system results in some of the driving functions associated with conventional mechanical handbrakes being lost. For example, drift is a driving technique that can be accomplished with a mechanical hand brake that the driver pulls up on the mechanical hand brake handle while turning so that the rear wheels are braked to slow down, losing most or all of their grip and slipping with respect to the ground. Thus, the vehicle may drift by drifting. By the drift, the speed limit at the time of turning can be increased. This is an important technique and enjoyment for some drivers.
Therefore, the current electronic brake system cannot meet the demand of a driver who wants to brake the rear wheels to slip during traveling to perform a driving function such as drifting, and is not suitable for a sport type vehicle.
Disclosure of Invention
It is an object of the present application to provide an improved electric brake system that enables individual braking of the rear wheels during driving so that the vehicle has the driving functions associated with a conventional mechanical hand brake.
According to one aspect of the present application, there is provided an electronic brake system for a vehicle, including: a driving stability system control unit; an electronic parking brake control unit connected to or integrated with the driving stability system control unit; an electronic parking brake operation switch connected to the electronic parking brake control unit; and a sport mode switch connected with the driving stability system control unit and used for being controlled by a driver to set the electronic brake system or the driving stability system in a sport mode; wherein the running stability system control unit is configured to instruct a service braking system of the vehicle to apply a braking force to a rear wheel of the vehicle if the following conditions 1 to 4 are all satisfied: condition 1, the electronic brake system or the running stability system of the vehicle is set in the sport mode; condition 2, the vehicle is running at a speed higher than a brake mode switching speed value; condition 3, the driver does not input a service braking instruction; and condition 4, the electronic parking brake operation switch is activated by the driver.
According to a possible embodiment, the running stability system control unit is configured to command the service braking system not to apply the braking force to the front wheels of the vehicle when the conditions 1 to 4 are all satisfied.
According to one possible embodiment, the running stability system control unit is configured to command participation by the parking brake system in applying the braking force to the rear wheel of the vehicle in a case where the braking force cannot be applied to the rear wheel by the running brake system or the applied braking force is insufficient when all of the conditions 1 to 4 are satisfied.
According to a possible embodiment, the running stability system control unit is further configured to prohibit a function of automatically intervening in the transmission of the wheel driving force and/or the braking force in the vehicle when all of the conditions 1 to 4 are satisfied.
According to one possible embodiment, the driving stability system control unit comprises or is connected to a disabling module and the driving stability system control unit disables the function of automatically intervening in the transmission of wheel driving force and/or braking force in the vehicle by means of the disabling module.
According to a possible embodiment, the running stability system control unit is configured to calculate the target braking force required for the rear wheels based on relevant vehicle parameters selected from some or all of the current vehicle speed, the rear wheel rotation speed, the steering wheel angle, the body roll angle, the vehicle lateral direction, the longitudinal acceleration, when all of the conditions 1 to 4 are satisfied.
According to one possible embodiment, the electronic brake system further has a parking brake mode that is activated when the electronic brake system is not set in the sport mode and the vehicle is running at a speed equal to or lower than the brake mode switching speed value, wherein the running stability system control unit instructs the electronic parking brake control unit to apply the braking force to the rear wheels.
According to one possible embodiment, the electronic brake system also has a service braking mode which is activated when the electronic brake system is not set in the sport mode and the vehicle is running at a speed higher than the brake mode switching speed value, wherein the running stability system control unit instructs the service braking system to apply braking forces to both the front and rear wheels of the vehicle.
According to one possible embodiment, the driving stability system control unit further comprises an electronic dynamic control module, which operates only in the sport mode, for determining the target braking force to be applied to the respective rear wheel.
According to one possible embodiment, the driving stability system control unit is an ESP module.
According to one possible embodiment, the electronic brake system further comprises a parking brake actuator associated with each rear wheel of the vehicle, which is controlled by the electronic parking brake control unit and/or the ride stability system control unit to apply a braking force to the respective rear wheel via a brake element.
The present application provides in another aspect thereof an electronic dynamic control module for a vehicle electronic brake system including an electronic parking brake control unit and a driving stability system control unit, the electronic dynamic control module being integrated or connected in the driving stability system control unit and configured to calculate a target slip ratio of rear wheels and a target braking force required for the rear wheels based on relevant vehicle parameters selected from some or all of a current vehicle speed, a rear wheel rotation speed, a steering wheel rotation angle, a body roll angle, a vehicle lateral direction, a longitudinal acceleration, in a case where the above-mentioned condition 1 to condition 4 are satisfied.
The present application provides in another aspect thereof a ride control system adapted to be used in combination with an electronic parking brake control unit of a vehicle, the electronic parking brake control unit being connected to an electronic parking brake operation switch and a parking brake actuator respectively associated with rear wheels of the vehicle, the ride control system control unit being configured to be adapted to be connected to or integrated with the electronic parking brake control unit; wherein the electronic parking brake control unit and/or the driving stability system control unit controls the parking brake actuator to apply the braking force to the rear wheel of the vehicle in the case where the driver activates the electronic parking brake operation switch while the vehicle is running at a speed equal to or lower than a brake mode switching speed value; when all of the above conditions 1 to 4 are satisfied, the driving stability system control unit instructs a service brake system of the vehicle to apply a braking force to a rear wheel of the vehicle. The electronic dynamic control module may be used in such a ride control system control unit.
The present application provides in another of its aspects a control assembly for an electronic brake system of a vehicle, comprising a ride control system control unit and an electronic parking brake control unit connected to or integrated with the ride control system control unit, the electronic parking brake control unit further connected to an electronic parking brake operating switch and a parking brake actuator respectively associated with rear wheels of the vehicle; wherein the electronic parking brake control unit and/or the driving stability system control unit controls the parking brake actuator to apply the braking force to the rear wheel of the vehicle in the case where the driver activates the electronic parking brake operation switch while the vehicle is running at a speed equal to or lower than a brake mode switching speed value; when all of the above conditions 1 to 4 are satisfied, the driving stability system control unit instructs a service brake system of the vehicle to apply a braking force to a rear wheel of the vehicle. The electronic dynamic control module may be used in such a control assembly.
It should be noted that the features of the electronic brake system of the present application are equally applicable to the electronic dynamic control module, the ride control system control unit and the control assembly of the present application.
According to the application, the rear wheels can be independently braked according to the brake instruction input of the driver in the driving process in the motion mode, and dynamic control is realized. This enables the vehicle to perform the driving functions associated with conventional mechanical hand brakes slipping the rear wheels, especially drifting through bends. In addition, in the sport mode, braking of the rear wheels, which is initiated by the driver by manipulating the electronic parking brake operation switch, is performed by the service brake system, so that the rear wheel braking can be more accurately and more rapidly achieved with a greater braking force, and the electronic brake system is prevented from being excessively used.
Drawings
The foregoing and other aspects of the present application will be more fully understood from the following detailed description, taken with reference to the accompanying drawings, in which:
FIG. 1 is a schematic illustration of an electric brake system according to one embodiment of the present application;
fig. 2 is a block diagram of a control portion of an electric brake system according to the present application.
Detailed Description
Some possible embodiments of the present application are described below with reference to the drawings.
Fig. 1 schematically illustrates an electronic brake system according to an embodiment of the present application, which includes an electronic parking brake control unit (module) 1 for controlling braking of a rear wheel of a vehicle, and a control unit (module) of a driving stability system. The electronic parking brake control unit 1 is connected to or integrated with the control unit of the ride stability system, so that the two are combined into one control assembly. In the following detailed description, the electronic parking brake control unit 1 is connected to or integrated with an ESP module 2 of an ESP (electronic stability program) system, as an example. It will be appreciated that other ride stabilization systems and their control units may be used in the electronic brake system of the present application in place of the ESP system and its ESP module 2.
The ESP module 2 can determine the driving state of the vehicle by various sensors that detect the vehicle conditions. When the vehicle is unstable in running, the ESP module 2 sends a command to purposefully perform braking control on individual wheels, so as to avoid the risk of the vehicle caused by out-of-control, keep the vehicle at the best stability under various conditions, and have particularly obvious effect on steering of the vehicle.
The electronic brake system further includes an electronic parking brake operation switch 3, which is connected to the electronic parking brake control unit 1 and is operated by the driver to implement the electronic parking brake. The electronic parking brake operating switch 3 may be in the form of any suitable key, button, lever, etc., and may be disposed at any position suitable for manipulation by the driver, such as on an instrument panel, a steering wheel, etc.
An electric brake system is associated with the brake 4 of each rear wheel. For example, the electronic brake system includes a parking brake actuator 5 provided for each rear wheel, and the parking brake actuator 5 includes, for example, a motor and an associated transmission mechanism. The brake 4 comprises a braking element, such as a brake disc 6 and a pair of brake pads 7 clamped on either side of the brake disc 6. The parking brake actuator 5 acts on one or both of the brake pads 7 to shorten the distance between the pair of brake pads 7 so that they push against the brake disc 6, thereby generating a braking friction force.
The electronic parking brake control unit 1 is connected to each parking brake actuator 5 via a respective control line 8 in order to be able to control the actuation of each parking brake actuator 5 individually.
The ESP module 2 is connected to a service brake system, for example a hydraulic brake system, in order to control the service brake system to output a service braking force to the brake elements, for example via hydraulic lines. In the figure, for the sake of simplicity, the control line 9 between the ESP module 2 and the brake 4 indicates that the ESP module 2 can control the output of the service braking force to the brake 4.
The ESP module 2 is also connected to a vehicle data bus 10 in order to obtain the required vehicle operating parameters therefrom.
Furthermore, an EDC (electronic dynamic control) module 11 is integrated or connected in the ESP module 2 for determining the braking force to be applied to the rear wheels. The ESP module 2 is also connected to a movement mode switch 12, which is used to be actuated to bring the vehicle drive control mode into and out of a movement mode.
In addition, the ESP module 2 includes or is connected to a disabling module 13 for disabling certain functions in certain systems of the vehicle when the driver selects the sport mode, as described later. The electronic parking brake operation switch 3 also constitutes a start switch of the disabling module 13.
As already mentioned, the electronic parking brake control unit 1 may be connected to or integrated with the ESP module 2. When the electronic parking brake control unit 1 is integrated into the ESP module 2, data can be transmitted and received in both directions directly. When electronic parking brake control unit 1 is connected to ESP module 2, data may be transmitted and received therebetween bi-directionally via network and/or data transfer interface 14, as shown in fig. 2.
In addition, as shown in fig. 2, the ESP module 2 is also connected to various ESP sensors 15 for receiving relevant information therefrom. The ESP module 2 is also connected to a brake light controller 16 for controlling the brake lights of the vehicle to be turned on during braking.
The electric brake system of the present application is configured to operate in at least three modes.
The first operating mode is a parking brake mode. In a stopped state of the vehicle, the driver operates the electronic parking brake operation switch 3, and the electronic parking brake control unit 1 controls the parking brake actuator 5 to operate to drive the brake element, thereby braking the vehicle.
Note that the parking brake mode is suitable for long-term braking after parking and temporary braking during driving. For temporary braking in the driving process, an automatic parking brake switch can be additionally arranged. Under the condition that the automatic parking brake switch is pressed, when a driver needs to stop temporarily in the driving process, the driver steps on a brake pedal, and the electronic parking brake control unit 1 automatically controls the parking brake actuator 5 to implement parking brake; after the driver releases the brake pedal, the electronic parking brake control unit 1 automatically releases the parking brake.
Further, the parking brake mode can also decelerate the vehicle to a stationary state in a state where the vehicle is traveling at a low speed. Specifically, when the vehicle is running at a low speed (for example, after the driver decelerates the vehicle through the brake pedal), the driver operates the electronic parking brake operation switch 3, the ESP module 2 calculates the braking force required by the brake element according to the current vehicle speed and the preset braking time, and the electronic parking brake control unit 1 controls the parking brake actuator 5 to output the corresponding braking force to the brake element, so as to decelerate the vehicle to a stationary state. The low-speed running of the vehicle means that the vehicle speed is equal to or lower than a certain set braking mode switching speed value, for example, 3-5 km/h. Of course, this brake mode switching speed value may be calibrated.
The second operating mode of the electric brake system is a service braking mode. When the vehicle speed is higher than the braking mode switching speed value, after the driver activates the electronic parking brake operation switch 3 (whether or not the brake pedal is also depressed), the ESP module 2 calculates a braking force required by the brake 4 based on information of the current vehicle speed, wheel speed, vehicle body yaw angle, and the like, and outputs the braking force to the braking elements of the front and rear wheels through the service brake system, thereby decelerating the vehicle.
Of course, if for any reason it occurs that the service brake system is unable to provide braking force, or is providing insufficient braking force to achieve the desired braking, while the vehicle is in motion, the parking brake system will engage in braking of the rear wheels (in conjunction with, or in place of, the service brake system). For example, in the case of emergency braking of the vehicle, if the ESP module 2 detects a situation such as insufficient braking force of the service brake system or failure of the service brake, the parking brake system will intervene in the control to assist the ESP system and the driver in braking to ensure deceleration of the vehicle. The emergency braking of the vehicle can be determined by the ESP module 2 from the situation that the vehicle speed is high and the driver presses the brake pedal hard and/or activates the electronic parking brake operating switch 3 and maintains the activated state for a long time.
The first and second modes of operation of the electric brake system are performed when the sport mode switch 12 is not activated.
The third mode of operation of the electric brake system is a sport mode, which is executed when the sport mode switch 12 is actuated by the driver. Upon entering the third operating mode by operating the movement mode switch 12, the ESP module 2 instructs the disabling module 13 to disable certain functions of automatically intervening in the transmission of wheel driving and/or braking forces, including possibly TCS (traction control system), VDC (vehicle dynamics control), ABS (anti-lock brake), EBD (electronic brake force distribution), etc., since these functions hinder certain driving functions by rear wheel slip, and thus the driver cannot drive at will. In the third operating mode, only the EDC module 11 is active in the ESP system for the rear axle.
In the third mode of operation, when the vehicle is traveling at a speed higher than the brake mode switching speed value, if the driver activates the electronic parking brake operating switch 3 in a condition where the brake pedal is not depressed, upon receiving a signal from the electronic parking brake operation switch 3, the electronic parking brake control unit 1 sends a rear wheel brake request to the ESP module 2, and the EDC module 11 in the ESP module 2 calculates a rear wheel target slip rate and slip distance (or slip time) and a target deceleration based on information from the data bus 10 and various ESP sensors 15 regarding the current vehicle speed, the rear wheel rotational speed, the steering wheel angle, the vehicle yaw angle, the vehicle lateral and longitudinal acceleration, and even the length of time the electronic parking brake operation switch 3 is kept activated, and thereby calculates a required braking force of the rear axle or the rear wheels (particularly, each rear wheel). The ESP module 2 then commands the service brake system to output a corresponding braking force to the braking elements of the rear wheels. Thus, the rear wheel has a slipping effect.
It is noted that to achieve the desired rear wheel slip ratio, the rear wheel speed may need to be reduced to zero (locking the rear wheel), or only to a certain value.
In this way, the rear wheels can be made to slip by braking the rear wheels when the vehicle is traveling at high speed in a sport mode, thereby enabling various driving experiences related to rear wheel slip, particularly high speed cornering in the form of drift, without requiring the vehicle to slow down or without slowing down too much.
In the process of braking the rear wheels, the ESP module 2 monitors the condition of the vehicle in real time and adjusts the braking force on each rear wheel, thereby implementing dynamic control of the rear wheel braking to prevent vehicle body instability.
Further, in the third operation mode, if the electronic parking brake operation switch 3 is activated while the brake pedal is depressed, the ESP module 2 determines that the service brake system outputs braking force to the brake elements of the front and rear wheels, or determines that the parking brake system is also involved in braking and outputs braking force to the rear wheels to participate in vehicle deceleration braking.
The EDC module 11 is active only in the third mode of operation and is inactive in the first and second modes of operation.
In the third mode of operation, if the vehicle speed continues to decrease, the EDC module 11 will determine that the vehicle is about to enter a steady state of stopping, and will automatically switch to providing braking force to the rear wheels by the electronic brake system, and maintain the parking brake after the rear wheels are stopped, similar to the first mode described above. (put to this block)
According to the present application, in the sport mode, the electronic braking system closes the function of automatically intervening in the transmission of power and service braking forces to the rear axle, so that the driver can drive the vehicle freely with a driving pleasure similar to the rear wheel slip that can be achieved with a conventional mechanical handbrake, in particular drifting through curves at high speed. However, unlike the case when the conventional mechanical hand brake is used, the electronic brake system of the present application brakes the rear wheel with the service brake system after the electronic parking brake operation switch is turned on in the sport mode. The service braking system can provide larger braking force and more accurate braking force control, so that the slippage of the rear wheels can be controlled more quickly and accurately, and the action of the vehicle can be controlled more efficiently and accurately when the vehicle runs in a motion mode, particularly when the vehicle drifts over a curve.
And, in the traditional vehicle driving process, pull up traditional mechanical hand brake to the rear wheel braking, wearing and tearing easily or damage mechanical hand brake, and this application in second, three kinds of operating modes, even started electronic parking braking operating switch, also utilize more powerful service braking system to realize the rear wheel braking for parking braking system avoids being used excessively, and life can prolong.
It is to be understood that the electric brake system of the present application may be equipped in various vehicles, particularly sport-type vehicles.
It will be appreciated that in the specific example described above, the electronic parking brake control unit 1 is used in combination with the ESP module 2. In other embodiments, the electronic parking brake control unit 1 can be used in combination with control units (modules) of other driving stability systems, the various features described above for the ESP system and the ESP module 2 being similarly applicable in such applications (with corresponding adaptations if necessary). The scope of protection of the present application also includes the electronic parking brake control unit 1, the driving stability system control unit, and the control assembly constituted by the electronic parking brake control unit 1 in combination with the driving stability system control unit, which are described above. The various features described above in the electric brake system of the present application are equally applicable to the electric dynamic control module, the ride control system control unit, and the control assembly of the present application.
Although the present application has been described herein with reference to particular embodiments, the scope of the present application is not intended to be limited to the details shown. Various modifications may be made to these details without departing from the underlying principles of the application.
Claims (19)
1. An electronic brake system for a vehicle, comprising:
a driving stability system control unit (2);
an electronic parking brake control unit (1) connected to or integrated with a driving stability system control unit (2);
an electronic parking brake operation switch (3) connected to the electronic parking brake control unit (1); and
a sport mode switch (12) connected with the driving stability system control unit (2) and used for being operated by a driver to set the electronic brake system in a sport mode;
wherein the driving stability system control unit (2) is configured to instruct a service braking system of the vehicle to apply a braking force to a rear wheel of the vehicle if the following conditions 1 to 4 are all satisfied:
condition 1, the electronic brake system is set in the sport mode;
condition 2, the vehicle is running at a speed higher than a brake mode switching speed value;
condition 3, the driver does not input a service braking instruction; and
in condition 4, the electronic parking brake operation switch (3) is actuated by the driver.
2. The electronic brake system according to claim 1, wherein the running stability system control unit (2) is configured to instruct the running brake system not to apply the braking force to the front wheels of the vehicle when all of the conditions 1 to 4 are satisfied.
3. The electronic brake system according to claim 1, wherein the running stability system control unit (2) is configured to instruct participation of the parking brake system in applying the braking force to the rear wheels of the vehicle in a case where the running brake system cannot apply the braking force to the rear wheels or the applied braking force is insufficient when all of the conditions 1 to 4 are satisfied.
4. The electronic brake system according to claim 2, wherein the running stability system control unit (2) is configured to instruct participation of the parking brake system in applying the braking force to the rear wheels of the vehicle in a case where the running brake system cannot apply the braking force to the rear wheels or the applied braking force is insufficient when all of the conditions 1 to 4 are satisfied.
5. The electronic brake system according to claim 1, wherein the running stability system control unit (2) is further configured to prohibit a function of automatically intervening in transmission of the wheel driving force and/or the braking force in the vehicle when all of the conditions 1 to 4 are satisfied.
6. The electronic brake system according to claim 5, wherein the driving stability system control unit (2) comprises or is connected with a disabling module (13), and the driving stability system control unit (2) disables the function of automatically intervening in the transmission of wheel driving force and/or braking force in the vehicle through the disabling module (13).
7. The electronic brake system according to any one of claims 1 to 6, wherein the ride stability system control unit (2) further integrates or is connected to an electronic dynamic control module (11), the electronic dynamic control module (11) operating in a sport mode for determining a target braking force to be applied to the rear wheels.
8. The electronic brake system according to claim 7, wherein the electronic dynamic control module (11) is configured to calculate a target braking force required for the rear wheels based on relevant vehicle parameters selected from some or all of current vehicle speed, rear wheel speed, steering wheel angle, body roll angle, vehicle lateral, longitudinal acceleration.
9. The electronic brake system according to any one of claims 1 to 6, wherein the electronic brake system further has a parking brake mode that is activated when the electronic brake system is not set in a sport mode and a vehicle is running at a speed equal to or lower than the brake mode switching speed value, wherein the running stability system control unit (2) instructs the electronic parking brake control unit (1) to apply a braking force to a rear wheel.
10. The electronic brake system according to any one of claims 1 to 6, wherein the electronic brake system further has a service brake mode that is activated when the electronic brake system is not set in the sport mode and the vehicle is running at a speed higher than the brake mode switching speed value, wherein the running stability system control unit (2) instructs the service brake system to apply braking forces to both the front and rear wheels of the vehicle.
11. The electronic brake system according to claim 7, wherein the electronic brake system further has a service brake mode that is activated when the electronic brake system is not set in the sport mode and the vehicle is running at a speed higher than the brake mode switching speed value, wherein the running stability system control unit (2) instructs the service brake system to apply braking forces to both the front and rear wheels of the vehicle.
12. The electronic brake system according to claim 8, wherein the electronic brake system further has a service brake mode that is activated when the electronic brake system is not set in the sport mode and the vehicle is running at a speed higher than the brake mode switching speed value, wherein the running stability system control unit (2) instructs the service brake system to apply braking forces to both the front and rear wheels of the vehicle.
13. The electronic brake system according to claim 9, wherein the electronic brake system further has a service brake mode that is activated when the electronic brake system is not set in the sport mode and the vehicle is running at a speed higher than the brake mode switching speed value, wherein the running stability system control unit (2) instructs the service brake system to apply braking forces to both the front and rear wheels of the vehicle.
14. The electronic brake system according to claim 10, wherein the electronic brake system further has a service brake mode that is activated when the electronic brake system is not set in the sport mode and the vehicle is running at a speed higher than the brake mode switching speed value, wherein the running stability system control unit (2) instructs the service brake system to apply braking forces to both the front and rear wheels of the vehicle.
15. The electronic brake system according to any one of claims 1 to 6, wherein the ride control system control unit (2) is an ESP module.
16. The electronic brake system according to any one of claims 1 to 6, wherein the electronic brake system further comprises a parking brake actuator (5) associated with a rear wheel of the vehicle, respectively, which is controlled by the electronic parking brake control unit (1) and/or the ride stability system control unit (2) to apply a braking force to the respective rear wheel via a brake element.
17. An electronic dynamic control module (11) for a vehicle electronic brake system comprising an electronic parking brake control unit (1) and a ride control system control unit (2), the electronic dynamic control module (11) being integrated or connected in the ride control system control unit (2) and being adapted to, in the event that the following conditions 1-4 are all fulfilled:
condition 1, the electronic brake system is set in the sport mode;
condition 2, the vehicle is running at a speed higher than a brake mode switching speed value;
condition 3, the driver does not input a service braking instruction; and
condition 4, the driver inputs a parking brake command,
the electronic dynamic control module (11) calculates a target braking force required by the rear wheels based on relevant vehicle parameters, wherein the vehicle parameters are selected from some or all of current vehicle speed, rear wheel rotating speed, steering wheel rotating angle, vehicle body roll angle, vehicle transverse and longitudinal acceleration.
18. A ride control unit (2) adapted to be used in combination with an electronic parking brake control unit (1) of a vehicle, said electronic parking brake control unit (1) being connected to an electronic parking brake operating switch (3) and to a parking brake actuator (5) respectively associated with a rear wheel of the vehicle, said ride control unit (2) being configured to be adapted to be connected to or integrated with said electronic parking brake control unit (1);
wherein, when the vehicle is running at a speed equal to or lower than a brake mode switching speed value, the electronic parking brake control unit (1) and/or the running stability system control unit (2) controls the parking brake actuator (5) to apply a braking force to the rear wheel of the vehicle in the case where the driver activates the electronic parking brake operation switch (3); and is
When the following conditions 1 to 4 are satisfied:
condition 1, the running stability system of the vehicle is set in the sport mode;
condition 2, the vehicle is traveling at a speed higher than the braking mode switching speed value;
condition 3, the driver does not input a service braking instruction; and
condition 4, the electronic parking brake operation switch (3) is actuated by the driver,
the running stability system control unit (2) instructs a service brake system of the vehicle to apply a braking force to the rear wheels of the vehicle.
19. A control assembly for an electronic braking system of a vehicle, comprising a driving stability system control unit (2) and an electronic parking brake control unit (1) connected to or integrated with the driving stability system control unit (2), said electronic parking brake control unit (1) being further connected to an electronic parking brake operating switch (3) and to parking brake actuators (5) respectively associated with the rear wheels of the vehicle;
wherein, when the vehicle is running at a speed equal to or lower than a brake mode switching speed value, the electronic parking brake control unit (1) and/or the running stability system control unit (2) controls the parking brake actuator (5) to apply a braking force to the rear wheel of the vehicle in the case where the driver activates the electronic parking brake operation switch (3); and is
When the following conditions 1 to 4 are satisfied:
condition 1, the electronic brake system is set in the sport mode;
condition 2, the vehicle is traveling at a speed higher than the braking mode switching speed value;
condition 3, the driver does not input a service braking instruction; and
condition 4, the electronic parking brake operation switch (3) is actuated by the driver,
the running stability system control unit (2) instructs a service brake system of the vehicle to apply a braking force to the rear wheels of the vehicle.
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| CN201610380408.5A CN107444373B (en) | 2016-06-01 | 2016-06-01 | Electronic brake system with electronic dynamic control function |
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| CN107444373B true CN107444373B (en) | 2021-06-29 |
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| CN110733478B (en) * | 2018-07-18 | 2023-08-04 | 罗伯特·博世有限公司 | Control method and control system for opening/closing of P-gear-associated automatic parking function |
| CN110733479B (en) * | 2018-07-18 | 2023-08-01 | 罗伯特·博世有限公司 | Control method and control system for opening/closing automatic parking function |
| CN110254412A (en) * | 2019-06-21 | 2019-09-20 | 爱驰汽车有限公司 | Parking control method, system, equipment and storage medium |
| US11623619B2 (en) | 2019-12-10 | 2023-04-11 | Bendix Commercial Vehicle Systems Llc | Parking brake apparatus and method therefor |
| CN114559913B (en) * | 2021-02-03 | 2023-03-24 | 长城汽车股份有限公司 | Intelligent galloping control method and device and vehicle |
| CN112793561B (en) * | 2021-02-26 | 2022-07-19 | 常州机电职业技术学院 | Rapid bending control method based on independent EPB |
| CN114954394B (en) * | 2021-07-21 | 2023-05-05 | 长城汽车股份有限公司 | Vehicle drift control method and system and vehicle |
| CN115042758B (en) * | 2022-05-16 | 2023-08-15 | 中国第一汽车股份有限公司 | Control method and control device for vehicle drifting condition |
| CN115158277A (en) * | 2022-09-07 | 2022-10-11 | 万向钱潮股份公司 | Redundancy control method and redundancy control system for multi-brake system |
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