The invention relates to the technical field of vehicles, and provides a vehicle braking control method and device and a drive-by-wire power-assisted braking system. The method disclosed by the invention is applied to a vehicle with a drive-by-wire power-assisted braking system; the method comprises the steps that when a driver steps on a brake pedal and keeps the position of the brake pedal unchanged when a vehicle is static, a wire-controlled power-assisted braking system is controlled to enter a first power-assisted keeping stage, and in the first power-assisted keeping stage, the braking pressure and the motor torque of the wire-controlled power-assisted braking system are kept unchanged; and when the duration of the first power-assisted keeping stage exceeds a preset time threshold value, the wire-controlled power-assisted braking system is controlled to enter a second power-assisted keeping stage, in the second power-assisted keeping stage, the motor torque of the wire-controlledpower-assisted braking system is kept unchanged after being reduced, and the reduced motor torque can enable the braking pressure to be kept unchanged. The pedal feeling of a driver is kept unchangedby keeping the braking pressure of the braking system, and motor heating is reduced by reducing the motor torque of the braking system.

    本发明涉及车辆技术领域,提供一种车辆制动控制方法、装置及线控助力制动系统。本发明所述的方法应用于具有线控助力制动系统的车辆,且包括:当驾驶员在车辆静止时踩制动踏板并保持制动踏板位置不变时,控制线控助力制动系统进入第一助力保持阶段,在第一助力保持阶段,线控助力制动系统的制动压力和电机扭矩保持不变;以及在第一助力保持阶段的持续时间超过预设时间阈值时,控制线控助力制动系统进入第二助力保持阶段,在第二助力保持阶段,线控助力制动系统的电机扭矩降低后维持不变,且降低后的电机扭矩能够使制动压力保持不变。本发明通过保持制动系统的制动压力来保证驾驶员踏板感不变,且通过降低制动系统的电机扭矩来降低电机发热。


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    Title :

    Vehicle braking control method and device and drive-by-wire power-assisted braking system


    Additional title:

    车辆制动控制方法、装置及线控助力制动系统


    Contributors:
    GAO SANXING (author) / WANG RUIHUA (author) / ZHANG KEQIAN (author) / QIAO JUNHUI (author) / ZHAO HUI (author) / GUAN YANYAN (author) / GAO YANG (author) / WANG CHUAN (author) / LI HAO (author)

    Publication date :

    2020-04-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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