The invention discloses a control method for restraining vehicle deviation through an electric power steering system, which comprises the following steps: S1, detecting the straight running state of a vehicle, entering the next step when judging that the vehicle is in the straight running state, and otherwise, ending; s2, the current steering wheel angle is compared to determine the deviation state, and the deviation state is divided into non-deviation, serious deviation and compensable deviation; when the deviation state is non-deviation, the deviation compensation transverse pulling force calculated in the last period is maintained and output; when the off-tracking state is serious off-tracking, off-tracking compensation transverse tension calculation is not enabled; when the deviation state is compensable deviation, enabling and calculating deviation compensation transverse tension; and S3, the deviation compensation transverse pulling force obtained through calculation is converted into motor driving torque, and the motor driving torque is combined with torque generated by other functional components of the electric power steering system and then output. According to the method, the deviation compensation transverse pulling force is applied to the steering rack by recognizing the deviation characteristics, so that the vehicle is assisted to run linearly, and the driving comfort of a driver is improved.
本发明公开了一种电动助力转向系统抑制车辆跑偏的控制方法,包括:步骤S1,对车辆直行状态进行检测,当判断车辆处于直行状态时进入下一步骤,否则结束;步骤S2,比较当前方向盘角度确定跑偏状态,所述跑偏状态分为不跑偏、严重跑偏和可补偿跑偏;当跑偏状态为不跑偏,则维持上一周期计算的跑偏补偿横拉力进行输出;当跑偏状态为严重跑偏,跑偏补偿横拉力计算不使能;当跑偏状态为可补偿跑偏,使能并计算跑偏补偿横拉力;步骤S3,将计算得到的跑偏补偿横拉力转换为电机驱动力矩,并与电动助力转向系统其他功能组件产生的力矩合并后输出。本发明通过识别跑偏特征并对转向齿条施加跑偏补偿横拉力,从而辅助车辆直线行驶,提高驾驶员的驾驶舒适度。
Control method for restraining vehicle deviation of electric power steering system
电动助力转向系统抑制车辆跑偏的控制方法
2024-01-16
Patent
Elektronische Ressource
Chinesisch
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