The invention relates to the field of drive-by-wire chassis control systems, in particular to a drive-by-wire chassis system virtual differential lock control method which comprises the steps that when a virtual differential lock function key is pressed down, the wheel speeds of left and right driving wheels of a vehicle are obtained, and the real-time wheel speed difference is obtained; when the real-time wheel speed difference is larger than the preset wheel speed difference, the virtual differential speed function is started, the wheel speed of the wheel with the smaller wheel speed in the left driving wheel and the right driving wheel serves as the target wheel speed, the wheel speed of the wheel with the larger wheel speed serves as the control wheel speed, the wheel speed of the corresponding wheel is reduced by braking the wheel with the larger wheel speed, and the driving force is transferred to the wheel with the smaller wheel speed. The characteristic that the EMB can flexibly and independently control the braking force of the wheels for a long time is utilized, and the effect of the differential lock is achieved through the control algorithm of the virtual differential mechanism. The method can meet the requirements of cross-country escape of vehicles, and does not need to increase extra hardware cost.
本发明涉及线控底盘控制系统领域,具体为一种线控底盘系统虚拟差速锁控制方法,包括:当按下虚拟差速锁功能按键时,获取车辆左右驱动轮的轮速,并获得实时轮速差;当所述实时轮速差大于预设轮速差时,虚拟差速功能启动,将左右驱动轮中轮速较小的车轮的轮速作为目标轮速,将较大轮速车轮的轮速作为控制轮速,通过对较大轮速车轮进行制动以降低相应车轮轮速,驱动力向较小轮速车轮转移。本发明拟在利用EMB可以灵活,长时间的单独控制车轮制动力的特性,通过虚拟差速器的控制算法来达到差速锁的效果。既能满足车辆越野脱困的需求,另一方面不需要增加额外的硬件成本。
Virtual differential lock control method for drive-by-wire chassis system
一种线控底盘系统虚拟差速锁控制方法
07.01.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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