WO2020063090A1 - 具有双控独立控制功能的制动系统及其控制方法 - Google Patents

具有双控独立控制功能的制动系统及其控制方法 Download PDF

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Publication number
WO2020063090A1
WO2020063090A1 PCT/CN2019/098260 CN2019098260W WO2020063090A1 WO 2020063090 A1 WO2020063090 A1 WO 2020063090A1 CN 2019098260 W CN2019098260 W CN 2019098260W WO 2020063090 A1 WO2020063090 A1 WO 2020063090A1
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WIPO (PCT)
Prior art keywords
parking
control unit
control
brake
module
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PCT/CN2019/098260
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English (en)
French (fr)
Inventor
强玉霖
袁晓峰
袁永彬
Original Assignee
芜湖伯特利汽车安全系统股份有限公司
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Application filed by 芜湖伯特利汽车安全系统股份有限公司 filed Critical 芜湖伯特利汽车安全系统股份有限公司
Priority to JP2021542241A priority Critical patent/JP2022501271A/ja
Priority to EP19864446.0A priority patent/EP3838695A4/en
Priority to KR1020217012571A priority patent/KR20210105329A/ko
Priority to US17/278,266 priority patent/US20210354672A1/en
Publication of WO2020063090A1 publication Critical patent/WO2020063090A1/zh

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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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
    • 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
    • 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
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • 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
    • 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
    • B60T8/172—Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
    • 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
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/92—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • 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
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/402—Back-up
    • 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
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/413—Plausibility monitoring, cross check, redundancy
    • 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
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/414—Power supply failure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/81—Braking systems

Definitions

  • the invention belongs to the technical field of motor vehicle braking system control. More specifically, the present invention relates to a braking system having a dual-control independent control function. In addition, the invention also relates to a safe dual-control and dual-control independent parking control method of the control system.
  • the invention provides a braking system with a dual-control independent control function, whose purpose is to improve the safety of vehicle parking.
  • the braking system with dual-control independent control functions of the present invention is applied to braking of a motor vehicle, which is provided with a vehicle communication network and a power supply source; the braking system includes a first braking control unit and A second brake control unit; the first brake control unit and the second brake control unit are control units that independently complete a brake control function.
  • the first brake control unit and the second brake control unit are connected to the vehicle communication network through a first communication circuit and a second communication circuit, respectively.
  • the first brake control unit and the second brake control unit are connected to the first parking request module and the second parking request module 3002, respectively.
  • the first brake control unit is provided with a first control decision module, a first parking drive module, and a first parking execution mechanism; the first control decision module communicates with the first communication circuit and the first through a signal line.
  • the parking request module is connected; the first parking drive module is connected to the first control decision module and the first parking executive mechanism through signal lines, respectively;
  • the second brake control unit is provided with a second control decision module, a second parking drive module, and a second parking executive mechanism; the second control decision module communicates with the second communication circuit and the second through a signal line.
  • the parking request module is connected; the second parking drive module is connected to the second control decision module and the second parking actuator through signal lines, respectively;
  • the first control decision module and the second control decision module perform unit state information interaction with the vehicle communication network through the first communication circuit and the second communication circuit, respectively, and are used for brake parking control.
  • the first control decision module and the second control decision module communicate with each other through a signal line; the first brake control unit and the second brake control unit communicate with each other through the first control decision module and the second control decision The modules communicate with each other.
  • the first brake control unit and the second brake control unit are respectively connected to a power supply.
  • the present invention also provides the control method of the braking system with the dual-control independent control function described above.
  • the technical solution is:
  • first brake control unit and the second brake control unit When the first brake control unit and the second brake control unit are working normally, these two control units will independently control the first parking drive module and the second parking drive module, respectively. Drive the first parking actuator and the second parking actuator independently to realize the service braking or parking brake function;
  • the second brake control unit drives the second parking actuator through the second parking drive module according to the control logic, so as to implement auxiliary parking braking or parking brake;
  • the first brake control unit drives the first parking actuator through the first parking drive module according to the control logic, so as to realize auxiliary driving braking or parking brake;
  • the auxiliary brake or parking brake is executed by the second brake control unit;
  • the auxiliary brake or parking brake is executed by the first brake control unit;
  • the second brake control unit enables the vehicle to brake slowly and stop at a certain deceleration through a set control algorithm and a set communication logic, so as to realize safe auxiliary driving braking or parking braking.
  • executing the service brake and parking brake includes the vehicle communication network signal request and parking request, and the first brake control unit and the second brake control unit can perform certain braking functions, which can also be achieved.
  • the above-mentioned safe braking and parking functions includes the vehicle communication network signal request and parking request, and the first brake control unit and the second brake control unit can perform certain braking functions, which can also be achieved.
  • the first brake control unit and the second brake control unit implement a parking function by receiving a vehicle communication network signal request or a parking request.
  • the present invention adopts the above technical solution to improve the reliability and safety: the brake system with dual-control independent parking functions, in which the key parking request information, vehicle information interaction, and control decision-making modules are completely independent and can be operated relatively independently.
  • the brakes with dual-control independent parking functions can be separately arranged and developed as two EPB systems; they can also be integrated in the other In the control system, each brake function is realized independently; energy saving effect: it can completely cover and cancel the traditional P-position parking, and the vehicle does not need to be equipped with a P-position locking mechanism, which reduces the weight of the entire vehicle and is conducive to energy conservation and emission reduction;
  • the drag of brake discs and brake pads reduces fuel consumption.
  • FIG. 1 is a schematic diagram of a control logic structure of the present invention.
  • Vehicle communication network 2. Power supply; 3. First parking request module; 4. Second parking request module; 5. First control decision module; 6. Second control decision module; 7. First Parking drive module; 8, second parking drive module; 9, first parking actuator; 10, second parking actuator; 11, first communication circuit; 12, second communication circuit; S1, first Brake control unit 1; S2, second brake control unit.
  • FIG. 1 The structure shown in FIG. 1 is a braking system with dual control and independent control functions of the present invention, which is applied to parking and braking of a motor vehicle.
  • the motor vehicles and complete vehicles according to the present invention include, but are not limited to, passenger vehicles and commercial vehicles.
  • the braking system with dual-control independent control functions of the present invention is provided with a first brake control unit S1 and a second brake control unit S2; the first brake control unit S1 and the second brake control unit S2 is a control unit that independently completes the brake control function.
  • the first brake control unit S1 and the second brake control unit S2 can operate completely independently of each other without interfering with each other, and at the same time, can communicate with each other to achieve coordinated work.
  • the first brake control unit S1 and the second brake control unit S2 are connected in parallel, and the two sets of control system units operate completely independently;
  • the first brake control unit S1 and the second brake control unit S2 are connected to the first parking drive module 7 and the second parking drive module 8, respectively, so that the two sets of drive modules do not occur in a failure mode that interferes with the control at the same time;
  • Control logic The first brake control unit S1 and the second brake control unit S2 mutually monitor the working status between the two and the entire vehicle to meet the real-time judgment of the dual-control independent parking control unit in order to respond to the brake Parking request
  • Braking and parking signals from CAN network, parking request module (first parking request module 3 and second parking request module 4), first brake control unit S1 and second brake control unit S2 can respond separately and apply parking via the above functional logic.
  • the brake system with dual-control independent parking function is equipped with two sets of completely independent parking brake control units, which can operate relatively independently and can control the inputs of the two sets of brake drive modules, which are equivalent. With two EPBs running, redundant backups have been added;
  • the brake with dual-control independent parking function can be separately arranged and developed as two EPB systems, or it can be integrated in another control system, such as body electronic stability system, body controller, vehicle controller, Electronic steering controller, airbag controller, battery management controller;
  • Energy saving It can completely cover the traditional P-level parking.
  • the vehicle does not need to be equipped with a P-level locking mechanism, which reduces weight and is conducive to energy saving and emission reduction.
  • the first brake control unit S1 and the second brake control unit S2 are connected to the vehicle communication network 1 through a first communication circuit 11 and a second communication circuit 12, respectively.
  • the first communication circuit 11 and the second communication circuit 12 are connection paths for the parking decision module to receive other network signals of the entire vehicle. Through this module, the parking system can perform logical calculations and function-driven implementation based on the obtained real-time information.
  • the two parking brake control units receive vehicle status information through corresponding CAN communication circuits for decision-making of parking brake control; the vehicle status information includes, but is not limited to, switch signals, engine signals, vehicle speed signals, acceleration Signal, brake signal, wheel speed signal, pressure signal, turn signal, temperature signal, etc.
  • first brake control unit S1 and the second brake control unit S2 are connected to the first parking request module 3 and the second parking request module 4, respectively.
  • the signal lines connected to the first parking request module 3 and the second parking request module 4 include vehicle status signals, including but not limited to parking switch signals, acceleration signals, brake stroke signals, master cylinder pressure signals, and temperature. signal.
  • the second parking request module 4 is a connection path for the parking decision module to receive an external request, and the request includes, but is not limited to, an EPB switch, a P-position switch, and a network request signal. After receiving the signal, the parking decision module calculates the implemented parking function based on the signal status of the entire vehicle.
  • the first brake control unit S1 is provided with a first control decision module 5, a first parking drive module 7, and a first parking executive mechanism 9.
  • the first control decision module 5 communicates with the first through a signal line.
  • the communication circuit 11 and the first parking request module 3 are connected;
  • the first parking driving module 7 is connected to the first control decision module 5 and the first parking execution mechanism 9 through signal lines, respectively;
  • the first control decision module 5 is connected to the first parking drive module 7 through a control line; the first parking drive module 7 is connected to the first parking actuator 9 through a control line.
  • the second brake control unit S2 is provided with a second control decision module 6, a second parking drive module 8, and a second parking executive mechanism 10.
  • the second control decision module 6 communicates with the second through a signal line.
  • the communication circuit 12 and the second parking request module 4 are connected;
  • the second parking driving module 8 is connected to the second control decision module 6 and the second parking executive mechanism 10 through signal lines, respectively;
  • the second control decision module 6 is connected to the second parking drive module 8 through a control line; the second parking drive module 8 is connected to the second parking actuator 10 through a control line.
  • the first parking request module 3 and the second parking request module 4 are independently connected to the first brake control unit S1 and the second brake control unit S2 through signal lines, respectively.
  • the second parking request module 4 is not limited to a parking switch and a network signal.
  • the first control decision module 5 and the second control decision module 6 both receive the vehicle state information through the corresponding first communication circuit 11 and the second communication circuit 12 for parking brake control.
  • the first control decision module 5 and the second control decision module 6 are connected to the second communication circuit 12 module through a plurality of signal lines, respectively.
  • the control decision module and the parking drive module are respectively connected through a logic circuit.
  • the parking drive module and the parking actuator are connected by signal lines, respectively.
  • the parking request module is connected to the control decision module through a signal line.
  • the two control decision modules are connected to each other through signal lines.
  • the first control decision module 5 and the second control decision module 6 are connected through a signal line and can communicate with each other.
  • the first brake control unit S1 and the second brake control unit S2 are controlled by a first control.
  • the decision module 5 and the second control decision module 6 implement mutual communication.
  • the first control decision module 5 and the second control decision module 6 are core control decision modules of the entire system control unit, and are not limited to intelligent brain control and logic circuit control. It is connected with each circuit module and realizes signal interaction, logic calculation and control between each module.
  • the first parking drive module 7 and the second parking drive module 8 are the connecting paths for the parking decision module to control the parking actuator, and are the hubs for driving the parking actuator and feedback the parking process signals.
  • the first parking actuator 9 and the second parking actuator 10 are two complete and independent mechanisms.
  • the arrangement in the entire vehicle is arranged on the drive shaft or wheel edge, but is not limited to the drive shaft or wheel edge. Generally, it is a mechanism for the motor to perform braking.
  • the first brake control unit S1 and the second brake control unit S2 are respectively connected to a power supply source 2 (a first power supply source and a second power supply source).
  • the power supply 2 is provided by two independent working power sources, which are respectively provided to the two parking control units.
  • the braking system with the dual-control independent parking function is composed of a completely independent first brake control unit S1 and a second brake control unit S2 and an independent power supply source 2 to independently complete their respective functions.
  • the power supply 2 includes two independent working power sources.
  • the power supply 2 provides two power sources to the first brake control unit S1 and the second brake control unit S2, respectively.
  • the present invention also provides the control method of the braking system with the dual-control independent control function described above.
  • the technical solution is:
  • the parking drive module independently drives the first parking actuator 9 and the second parking actuator 10 to realize the parking brake function
  • the parking control module is controlled by the first control decision module 5 and the second control decision module 6 according to a certain logical algorithm;
  • the first parking actuator 9 and the second parking actuator 10 implement a safe parking brake function.
  • the first brake control unit S1 and the second brake control unit S2 communicate with each other: when both units are working normally, the dual-control independent parking brake system realizes full-function operation.
  • the second brake control unit S2 drives the second parking actuator 10 through the second parking drive module 8 according to the control logic to implement parking brake;
  • the second control decision module 6 drives the second parking actuator 10 through the second parking driving module 8 to realize the parking and safe braking functions.
  • the first brake control unit S1 drives the first parking actuator 9 through the first parking drive module 7 according to control logic to implement parking brake;
  • the first control decision module 5 drives the first parking actuator 9 through the first parking driving module 7 according to the control logic and algorithm to realize the parking and safe braking functions.
  • the EPB dual-control independent parking brake system of the present invention can ensure that if any unit fails, the other unit can control the parking drive module to drive the parking actuator to achieve braking and parking:
  • the second control decision module 6 executes according to the control logic algorithm through the second brake control unit S2 Parking brake for parking;
  • the first control decision module 5 executes according to the control logic algorithm through the first brake control unit S1 Parking brake;
  • the vehicle state information received by the first communication circuit 11 and the second communication circuit 12 is the first brake control unit S1 and the second system.
  • the dynamic control unit S2 causes the vehicle to brake slowly and stop at a certain deceleration through a set control algorithm to achieve safe parking braking.
  • the first brake control unit S1 and the second brake control unit S2 determine the state of the entire vehicle through a certain control algorithm, and the parking actuator is driven by the parking drive module to achieve parking and safety. Braking function.
  • the first brake control unit S1 and the second brake control unit S2 perform a certain braking function, and the above-mentioned safe braking parking function can also be realized.
  • the parking brake control unit can also implement an emergency and safe parking function through a certain control algorithm.
  • the first brake control unit S1 and the second brake control unit S2 can judge the effective signal of the parking request module to execute the parking clamping release function
  • first brake control unit S1 and the second brake control unit S2 are provided, in the event that any one of the units fails, the other unit can control the motor drive module to drive the parking actuator to achieve parking, and One parking control unit on one side can meet the requirements of the ramp parking function greater than 8%;
  • the first brake control unit S1 and the second brake control unit S2 can receive the vehicle communication network information and execute the service braking demand from the network;
  • the parking request signal received by the first brake control unit S1 and the second brake control unit S2 realizes the anti-lock braking function of the vehicle through the calculation and judgment of the running state of the entire vehicle;
  • the first brake control unit S1 and the second brake control unit S2 can calculate the magnitude of the parking clamping force based on the value of the inclination signal to achieve reliable parking.
  • the first brake control unit S1 and the second brake control unit S2 can monitor the temperature characteristics, vehicle downhill trend, time and other information in real time through the brake control unit, and control the parking motor actuator to apply the parking force multiple times. , To ensure the safety of vehicles on the slope.
  • the invention can solve the parking reliability risk and ensure the parking safety under the condition of complying with the regulations; the two units of the dual-control independent parking brake control both improve the safety of the vehicle and reduce energy consumption by replacing P
  • the blocking system reduces the cost of the vehicle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Regulating Braking Force (AREA)

Abstract

一种具有双控独立控制功能的制动系统及其控制方法，制动系统设置第一制动控制单元（S1）和第二制动控制单元（S2）；第一制动控制单元（S1）和第二制动控制单元（S2）为各自独立完成驻车控制功能的控制单元。

Description

具有双控独立控制功能的制动系统及其控制方法 技术领域
本发明属于机动车制动系统控制的技术领域。更具体地，本发明涉及一种具有双控独立控制功能的制动系统。另外，本发明还涉及该控制系统的安全双控及双控独立驻车控制方法。
背景技术
随着电控制动系统的逐渐发展，制动控制技术日新月异，新驻车控制技术方案的应用方向已产生了双重独立控制的需求，以满足车辆的更高安全性；同时，随着EPB(电子驻车制动系统)的广泛应用，对EPB的驻车安全性功能提升必须有更多的方法实现，且成为新的一代驻车方案的必然选择，尤其是应用于新能源车辆、自动驾驶车辆。
但是，在现有技术中，P档锁止机构取消、EPB电子驻车存在公用电源失效、控制决策模块失效、开关失效等问题导致整个EPB系统失效，对于多重独立驻车制动控制还缺少成熟可行的技术方案。
发明内容
本发明提供一种具有双控独立控制功能的制动系统，其目的是提高车辆驻车的安全性。
为了实现上述目的，本发明采取的技术方案为：
本发明的具有双控独立控制功能的制动系统，应用于机动车的制动，所述的机动车设有整车通信网络、供电电源；所述制动系统包含第一制动控制单元和第二制动控制单元；第一制动控制单元和第二制动控制单元为各自独立完成制动控制功能的控制单元。
所述的第一制动控制单元和第二制动控制单元分别通过第一通信电路、第二通信电路与整车通信网络连接。
所述的第一制动控制单元和第二制动控制单元分别与第一驻车请求模块和第二驻车请求模块连接3002
所述的第一制动控制单元设有第一控制决策模块、第一驻车驱动模块和第一驻车执行机构；所述的第一控制决策模块通过信号线路与第一通信电路及第一驻车请求模块连接；所述的第一驻车驱动模块通过信号线路分别与第一控制决策模块、第一驻车 执行机构连接；
所述的第二制动控制单元设有第二控制决策模块、第二驻车驱动模块和第二驻车执行机构；所述的第二控制决策模块通过信号线路与第二通信电路及第二驻车请求模块连接；所述的第二驻车驱动模块通过信号线路分别与第二控制决策模块、第二驻车执行机构连接；
所述的第一控制决策模块、第二控制决策模块分别通过第一通信电路、第二通信电路与整车通信网络进行单元状态信息交互，用于制动驻车控制。
所述的第一控制决策模块与第二控制决策模块通过信号线路进行相互通讯；所述的第一制动控制单元、第二制动控制单元之间通过第一控制决策模块、第二控制决策模块实现相互通讯。
所述的第一制动控制单元和第二制动控制单元分别与供电电源连接。
为了实现与上述技术方案相同的发明目的，本发明还提供了以上所述的具有双控独立控制功能的制动系统的控制方法，其技术方案是：
当第一制动控制单元、第二制动控制单元均正常工作时，将由这两个控制单元分别独立控制第一驻车驱动模块、第二驻车驱动模块，通过这两个驻车驱动模块分别独立驱动第一驻车执行机构、第二驻车执行机构，实现行车制动或驻车制动功能；
当供电电源供给第一制动控制单元过程中发生失效时，第二制动控制单元根据控制逻辑，通过第二驻车驱动模块驱动第二驻车执行机构，以实现辅助行车制动或驻车制动；
当供电电源供给第二制动控制单元过程中发生失效时，第一制动控制单元根据控制逻辑，通过第一驻车驱动模块驱动第一驻车执行机构，以实现辅助行车制动或驻车制动；
当第一控制决策模块、第一驻车驱动模块、第一驱动驻车执行机构之一发生失效时，通过第二制动控制单元执行辅助行车制动或驻车制动；
当第二控制决策模块、第二驻车驱动模块、第二驱动驻车执行机构之一发生失效时，通过第一制动控制单元执行辅助行车制动或驻车制动；
当第一驻车请求模块和第二驻车请求模块发生失效时，通过第一通信电路、第二通信电路接收的整车状态信息；必要情况下根据整车需求，第一制动控制单元、第二制动控制单元通过设定的控制算法、设定的通信逻辑，使车辆以一定的减速度缓慢制动停止，以实现安全辅助行车制动或驻车制动。
在上述过程的同时，执行行车制动和驻车制动包括整车通信网络信号请求、驻车 请求，第一制动控制单元、第二制动控制单元执行一定的制动功能，亦能实现上述安全制动及驻车功能。
所述第一制动控制单元、第二制动控制单元通过接收整车通信网络信号请求或驻车请求实现驻车功能。
本发明采用上述技术方案，提高可靠安全性：双控独立驻车功能的制动系统，其中关键驻车请求信息、整车信息交互、控制决策模块设置两套完全独立，能够相对独立运行，相当于两套EPB在运行，行车驻车的安全性提高两个数量级；实现可移植性：双控独立驻车功能的制动可作为两套EPB系统分别布置和开发；也可以分别集成在另一个控制系统中，独立实现各自制动功能；节能效果：可完全覆盖并取消传统P档驻车，整车不需要配置P档锁止机构，减轻整车重量，有利于节能减排；可降低后制动盘制动片的拖滞力，降低油耗。
附图说明
图1为本发明的控制逻辑结构示意图。
图中标记为：
1、整车通信网络；2、供电电源；3、第一驻车请求模块；4、第二驻车请求模块；5、第一控制决策模块；6、第二控制决策模块；7、第一驻车驱动模块；8、第二驻车驱动模块；9、第一驻车执行机构；10、第二驻车执行机构；11、第一通信电路；12、第二通信电路；S1、第一制动控制单元1；S2、第二制动控制单元。
具体实施方式
下面对照附图，通过对实施例的描述，对本发明的具体实施方式作进一步详细的说明，以帮助本领域的技术人员对本发明的发明构思、技术方案有更完整、准确和深入的理解。
如图1所示结构，为本发明的具有双控独立控制功能的制动系统，应用于机动车的驻车及制动。
本发明所述的机动车、整车，包括但不限于乘用车、商用车。
在图1中：
Figure PCTCN2019098260-appb-000001
表示信号走向；
Figure PCTCN2019098260-appb-000002
表示线路连接；
Figure PCTCN2019098260-appb-000003
表示构成驻车控制单元的框图线。
为了克服现有技术的缺陷，实现提高车辆驻车的安全性的发明目的，本发明采取的技术方案为：
如图1所示，本发明的具有双控独立控制功能的制动系统设置第一制动控制单元S1和第二制动控制单元S2；第一制动控制单元S1和第二制动控制单元S2为各自独立完成制动控制功能的控制单元。
所述的第一制动控制单元S1和第二制动控制单元S2之间既可以完全相互独立运行，互不干涉，同时，又可以相互通信，实现协调工作。
本发明通过以下方式施加保护：
1、第一制动控制单元S1和第二制动控制单元S2并联，两套控制系统单元完全独立运行；
2、第一制动控制单元S1和第二制动控制单元S2分别连接第一驻车驱动模块7和第二驻车驱动模块8，使两套驱动模块不发生同时干扰控制的失效模式；
3、控制逻辑：第一制动控制单元S1和第二制动控制单元S2相互监测两者与整车之间的工作状态，满足双控独立驻车控制单元实时判断，以便及时响应制动及驻车请求；
4、来源于CAN网络、驻车请求模块(第一驻车请求模块3和第二驻车请求模块4)的制动及驻车信号，第一制动控制单元S1和第二制动控制单元S2均可分别响应，并通过上述功能逻辑施加驻车。
其有益效果是：
1、可靠安全性：双控独立驻车功能的制动系统，其中设置两套完全独立的驻车制动控制单元，能够相对独立运行，可分别控制两套制动驱动模块的输入端，相当于两套EPB在运行，增加了冗余备份；
2、可移植性：双控独立驻车功能的制动可作为两套EPB系统分别布置和开发，也可以集成在另一个控制系统中，如车身电子稳定系统、车身控制器、车辆控制器、电子转向控制器、安全气囊控制器、电池管理控制器；
3、节能：可完全覆盖传统P档驻车，整车不需要配置P档锁止机构，减轻重量，有利于节能减排。
所述的第一制动控制单元S1和第二制动控制单元S2分别通过第一通信电路11、第二通信电路12与整车通信网络1连接。
所述的第一通信电路11、第二通信电路12是驻车决策模块接收整车其他网络信号的连接通路，通过该模块驻车系统可根据获得的实时信息进行逻辑计算和功能驱动 实现。
两个驻车制动控制单元通过相应的CAN通信电路接收整车状态信息，用于决策驻车制动控制；所述的整车状态信息包括但不限于开关信号、发动机信号、车速信号、加速信号、制动信号、轮速信号、压力信号、转向信号、温度信号等。
具体地，所述的第一制动控制单元S1和第二制动控制单元S2分别与第一驻车请求模块3、第二驻车请求模块4连接。第一驻车请求模块3和第二驻车请求模块4连接的信号线路中，包括整车状态信号，包括但不限于驻车开关信号、加速度信号、制动行程信号、主缸压力信号、温度信号。
所述的第二驻车请求模块4是驻车决策模块接收外部请求的连接通路，该请求包括不限于EPB开关、P档开关、网络请求信号。驻车决策模块接收到该信号后，根据整车信号状态计算实施的驻车功能。
所述的第一制动控制单元S1设有第一控制决策模块5、第一驻车驱动模块7和第一驻车执行机构9；所述的第一控制决策模块5通过信号线路与第一通信电路11及第一驻车请求模块3连接；所述的第一驻车驱动模块7通过信号线路分别与第一控制决策模块5、第一驻车执行机构9连接；
所述的第一控制决策模块5通过控制线路与第一驻车驱动模块7连接；所述的第一驻车驱动模块7通过控制线路与第一驻车执行机构9连接。
所述的第二制动控制单元S2设有第二控制决策模块6、第二驻车驱动模块8和第二驻车执行机构10；所述的第二控制决策模块6通过信号线路与第二通信电路12及第二驻车请求模块4连接；所述的第二驻车驱动模块8通过信号线路分别与第二控制决策模块6、第二驻车执行机构10连接；
所述的第二控制决策模块6通过控制线路与第二驻车驱动模块8连接；所述的第二驻车驱动模块8通过控制线路与第二驻车执行机构10连接。
所述的第一驻车请求模块3、第二驻车请求模块4通过信号线路分别独立与第一制动控制单元S1和第二制动控制单元S2连接。
所述的第二驻车请求模块4不限于一种驻车开关、网络信号。
所述的第一控制决策模块5与第二控制决策模块6均通过相应的第一通信电路11、第二通信电路12接收整车状态信息，用于驻车制动控制。
所述的第一控制决策模块5与第二控制决策模块6分别通过多条信号线路与第二通信电路12模块连接。
所述的控制决策模块与驻车驱动模块分别通过逻辑电路连接。所述的驻车驱动模 块与驻车执行机构分别通过信号线路连接。所述的驻车请求模块通过信号线路与控制决策模块连接。所述的控制决策模块两者之间通过信号线路相互连接。
所述的第一控制决策模块5与第二控制决策模块6通过信号线路连接，可互相连接通信；所述的第一制动控制单元S1、第二制动控制单元S2之间通过第一控制决策模块5、第二控制决策模块6实现相互通讯。
所述的第一控制决策模块5和第二控制决策模块6是整个系统控制单元的的核心控制决策模块，不限于智能大脑控制、逻辑电路控制。与各个电路模块连接并实现各个模块之间的信号交互、逻辑计算、控制。
所述的第一驻车驱动模块7和第二驻车驱动模块8是驻车决策模块控制驻车执行机构的连接通路，是为了驱动驻车执行机构并反馈驻车过程信号的中枢。
所述的第一驻车执行机构9和第二驻车执行机构10是两套完整独立的机构，在整车中的布置设置于传动轴或轮边，但不限于传动轴或轮边。一般为电机执行制动的机构。
以上所述的信号线路为通用或专用逻辑电路的统称。
所述的第一制动控制单元S1和第二制动控制单元S2分别与供电电源2(第一供电电源、第二供电电源)连接。
供电电源2是由两路独立的工作电源，分别提供给两个驻车控制单元。
所述的双控独立驻车功能的制动系统由完全独立的第一制动控制单元S1和第二制动控制单元S2和独立的供电电源2组成，独立完成各自的功能。所述的供电电源2包括两路独立的工作电源。所述的供电电源2分别提供两路电源至第一制动控制单元S1和第二制动控制单元S2。
为了实现与上述技术方案相同的发明目的，本发明还提供了以上所述的具有双控独立控制功能的制动系统的控制方法，其技术方案是：
当第一制动控制单元S1、第二制动控制单元S2均正常工作时，将由这两个控制单元分别独立控制第一驻车驱动模块7、第二驻车驱动模块8，通过这两个驻车驱动模块分别独立驱动第一驻车执行机构9、第二驻车执行机构10，实现驻车制动功能；
根据第一制动控制单元S1、第二制动控制单元S2接收驻车请求控制信号，通过第一控制决策模块5和第二控制决策模块6按一定的逻辑算法控制驻车驱动模块；从而控制第一驻车执行机构9、第二驻车执行机构10，以实现安全的驻车制动功能。
第一制动控制单元S1和第二制动控制单元S2之间相互通信：当两个单元均正常工作时，双控独立驻车制动系统实现全功能运行。
当供电电源2供给第一制动控制单元S1过程中发生失效时，第二制动控制单元S2根据控制逻辑，通过第二驻车驱动模块8驱动第二驻车执行机构10，以实现驻车制动；
这时，第二控制决策模块6根据控制逻辑和算法，通过第二驻车驱动模块8驱动第二驻车执行机构10以实现驻车和安全制动功能。
当供电电源2供给第二制动控制单元S2过程中发生失效时，第一制动控制单元S1根据控制逻辑，通过第一驻车驱动模块7驱动第一驻车执行机构9，以实现驻车制动；
这时，第一控制决策模块5根据控制逻辑和算法，通过第一驻车驱动模块7驱动第一驻车执行机构9以实现驻车和安全制动功能。
本发明的EPB双控独立驻车制动系统，能够保证其中任一单元失效的情况下，另一单元能够控制驻车驱动模块驱动驻车执行机构实现制动及驻车：
当第一控制决策模块5、第一驻车驱动模块7、第一驱动驻车执行机构9之一发生失效时，第二控制决策模块6根据控制逻辑算法，通过第二制动控制单元S2执行驻车制动，以实现驻车；
当第二控制决策模块6、第二驻车驱动模块8、第二驱动驻车执行机构10之一发生失效时，第一控制决策模块5根据控制逻辑算法，通过第一制动控制单元S1执行驻车制动；
当第一驻车请求模块3、第二驻车请求模块4发生失效时，通过第一通信电路11、第二通信电路12接收的整车状态信息，第一制动控制单元S1、第二制动控制单元S2通过设定的控制算法，使车辆以一定的减速度缓慢制动停止，以实现安全驻车制动。
这时，通过车辆状态信号，第一制动控制单元S1、第二制动控制单元S2通过一定的控制算法，判断整车状态，通过驻车驱动模块驱动驻车执行机构以实现驻车和安全制动功能。
在上述过程的同时，若整车通信网络1信号请求，第一制动控制单元S1、第二制动控制单元S2执行一定的制动功能，亦能实现上述安全制动驻车功能。
在上述过程的同时，若上述过程通过车辆的外部请求制动信号(驻车请求)，驻车制动控制单元通过一定的控制算法，亦能实现紧急安全的驻车功能。
本发明上述技术方案实现的功能是：
1、第一制动控制单元S1、第二制动控制单元S2可通过驻车请求模块的有效信号判断，执行驻车夹紧释放功能；
2、由于设置第一制动控制单元S1、第二制动控制单元S2，能够保证其中任一个单元失效的情况下，另一单元能够控制电机驱动模块驱动驻车执行机构，实现驻车，并且单侧一个驻车控制单元能够满足法规要求的大于8％的坡道驻车功能；
3、第一制动控制单元S1、第二制动控制单元S2，能够接收整车通信网络信息，执行来自网络的行车制动需求；
4、第一制动控制单元S1、第二制动控制单元S2接收的驻车请求信号，通过对整车运行状态的计算判断，实现车辆行驶过程中的制动防抱死功能；
5、第一制动控制单元S1、第二制动控制单元S2可通过倾角信号的数值，计算驻车夹紧力的大小，以实现可靠的驻车。
6、第一制动控制单元S1、第二制动控制单元S2可通过制动控制单元实时监控温度特性、车辆溜坡趋势、时间等信息，通过控制驻车电机执行机构多次施加驻车力，保证车辆驻坡的安全性。
本发明在符合法规的情况下，可解决驻车可靠性风险，保证驻车安全；通过双控独立驻车制动控制的两个单元，既提高了车辆安全性、降低能耗，通过取代P挡锁止系统又降低了整车成本。
上面结合附图对本发明进行了示例性描述，显然本发明具体实现并不受上述方式的限制，只要采用了本发明的方法构思和技术方案进行的各种非实质性的改进，或未经改进将本发明的构思和技术方案直接应用于其它场合的，均在本发明的保护范围之内。

Claims (9)

  1. 具有双控独立控制功能的制动系统，应用于机动车的制动，所述的机动车设有整车通信网络、供电电源；其特征在于：所述制动系统包含第一制动控制单元和第二制动控制单元；所述第一制动控制单元和所述第二制动控制单元为各自独立完成制动控制功能的控制单元。
  2. 按照权利要求1所述的具有双控独立控制功能的制动系统，其特征在于：所述的第一制动控制单元和第二制动控制单元分别通过第一通信电路、第二通信电路与所述整车通信网络连接。
  3. 按照权利要求1所述的具有双控独立控制功能的制动系统，其特征在于：所述的第一制动控制单元和所述第二制动控制单元分别与第一驻车请求模块和第二驻车请求模块连接。
  4. 按照权利要求3所述的具有双控独立控制功能的制动系统，其特征在于：
    所述的第一制动控制单元设有第一控制决策模块、第一驻车驱动模块和第一驻车执行机构；所述的第一控制决策模块通过信号线路与第一通信电路及所述第一驻车请求模块连接；所述的第一驻车驱动模块通过所述信号线路分别与所述第一控制决策模块、所述第一驻车执行机构连接；
    所述的第二制动控制单元设有第二控制决策模块、第二驻车驱动模块和第二驻车执行机构；所述的第二控制决策模块通过所述信号线路与第二通信电路及所述第二驻车请求模块连接；所述的第二驻车驱动模块通过所述信号线路分别与所述第二控制决策模块、所述第二驻车执行机构连接；
    所述的第一控制决策模块、所述第二控制决策模块分别通过所述第一通信电路、所述第二通信电路与所述整车通信网络进行单元状态信息交互，用于制动驻车控制。
  5. 按照权利要求4所述的具有双控独立控制功能的制动系统，其特征在于：所述的第一控制决策模块与所述第二控制决策模块通过所述信号线路进行相互通讯；所述的第一制动控制单元、所述第二制动控制单元之间通过所述第一控制决策模块、所述第二控制决策模块实现相互通讯。
  6. 按照权利要求1所述的具有双控独立控制功能的制动系统，其特征在于：所述的第一制动控制单元和所述第二制动控制单元分别与所述供电电源连接。
  7. 按照权利要求1至6中任一项所述的具有双控独立控制功能的制动系统的控制方法，其特征在于：
    当第一制动控制单元、第二制动控制单元均正常工作时，将由这两个控制单元分 别独立控制第一驻车驱动模块、第二驻车驱动模块，通过这两个驻车驱动模块分别独立驱动第一驻车执行机构、第二驻车执行机构，实现行车制动或驻车制动功能；
    当供电电源供给第一制动控制单元过程中发生失效时，第二制动控制单元根据控制逻辑，通过第二驻车驱动模块驱动第二驻车执行机构，以实现辅助行车制动或驻车制动；
    当供电电源供给第二制动控制单元过程中发生失效时，第一制动控制单元根据控制逻辑，通过第一驻车驱动模块驱动第一驻车执行机构，以实现辅助行车制动或驻车制动；
    当第一控制决策模块、第一驻车驱动模块、第一驱动驻车执行机构之一发生失效时，通过第二制动控制单元执行辅助行车制动或驻车制动；
    当第二控制决策模块、第二驻车驱动模块、第二驱动驻车执行机构之一发生失效时，通过第一制动控制单元执行辅助行车制动或驻车制动；
    当第一驻车请求模块和第二驻车请求模块发生失效时，通过第一通信电路、第二通信电路接收的整车状态信息；根据整车需求，第一制动控制单元、第二制动控制单元通过设定的控制算法，使车辆以一定的减速度缓慢制动停止，以实现安全辅助行车制动或驻车制动。
  8. 按照权利要求7所述的控制方法，其特征在于：在上述过程的同时，执行行车制动和驻车制动包括整车通信网络信号请求、驻车请求，第一制动控制单元、第二制动控制单元执行一定的制动功能，亦能实现上述安全制动及驻车功能。
  9. 按照权利要求7所述的控制方法，其特征在于：所述第一制动控制单元、第二制动控制单元通过接收整车通信网络信号请求或驻车请求实现驻车功能。
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