The invention discloses a vehicle steering wheel shimmy compensation method and system. The compensation method comprises the steps of calculating a steering wheel shimmy suppression moment Trt when a steering wheel shimmy compensation working condition is satisfied; judging the steering wheel shimmy suppression moment Trt and a preset torque threshold value Tts, if Trt is larger than Tts, enabling the steering wheel shimmy compensation moment Tcp to be equal to Tts, if Trt is smaller than -Tts, enabling the steering wheel shimmy compensation moment Tcp to be equal to -Tts, and if | Trt | is smaller than or equal to Tts, enabling the steering wheel shimmy compensation moment Tcp to be equal to Trt; calculating steering wheel shimmy compensation current I; and generating a motor control instruction according to the steering wheel shimmy compensation current I and a preset compensation applying moment t, and controlling an EPS motor to execute the motor control instruction to compensate the shimmy of the steering wheel. Hand fluctuation caused by road excitation can be reduced, the steering wheel shimmy is reduced, and the driving experience and driving safety are improved.
本发明公开了一种车辆方向盘摆振的补偿方法及补偿系统,所述补偿方法包括:在满足方向盘摆振补偿工作条件时,计算方向盘摆振抑制力矩Trt;判断方向盘摆振抑制力矩Trt与预设的力矩阈值Tts的大小,若Trt>Tts,则使方向盘摆振补偿力矩Tcp=Tts,若Trt<‑Tts,则使方向盘摆振补偿力矩Tcp=‑Tts,若|Trt|≤Tts,则使方向盘摆振补偿力矩Tcp=Trt;计算方向盘摆振补偿电流I;根据方向盘摆振补偿电流I和预设的补偿施加时刻t生成电机控制指令,并控制EPS电机执行该电机控制指令,补偿方向盘摆振。本发明能减小路面激励带来的手力波动,减小方向盘摆振,提高驾乘体验和行车安全性。
Vehicle steering wheel shimmy compensation method and system
一种车辆方向盘摆振的补偿方法及补偿系统
2021-07-30
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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