The invention provides a braking system suitable for automatic driving and a control method, when a vehicle needs to be braked, two pressure generating devices achieve the braking function of redundant backup under the control of a double-control electric control unit, and the safety redundancy requirement of automatic driving is met. Under the condition that wheels are locked due to emergency braking, anti-lock control is borne by a wheel end electromagnetic valve, the wheel end electromagnetic valve is controlled by double electric control systems of two electric control units, even if one electric control unit fails, the wheel end electromagnetic valve can still work normally, and redundant backup of the anti-lock ABS function is achieved. A pressure generating device composed of a pressure cylinder and a motor transmission driving unit and a pressure generating device composed of a motor, a first pump and a second pump can alternately or simultaneously bear oil liquid supply to provide pressure, and it is ensured that pressure supply interruption does not occur to the ABS action of the anti-lock function.
本发明的目的是提供一种适用于自动驾驶的制动系统及控制方法,车辆需要制动时,两个压力发生装置在双控电控单元的控制下,实现冗余备份的制动功能,满足自动驾驶的安全冗余需求。在遇到紧急制动发生车轮抱死的情况下,防抱死控制由轮端电磁阀承担,轮端电磁阀由两个电控单元双电控系统控制,即使在其中一个电控单元出现失效时,轮端电磁阀仍可以正常工作,实现了防抱死ABS功能的冗余备份。由增压缸、电机传动驱动单元组成的压力发生装置与由电机、泵一、泵二组成的压力发生装置,两个压力发生装置可以轮流或同时承担油液供给提供压力,确保防抱死功能ABS动作不会出现压力供给中断。
Braking system suitable for automatic driving and control method
一种适用于自动驾驶的制动系统及控制方法
2021-10-22
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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