基于路面动态识别的ASR仿真研究

以路面附着系数为参数指标,在车辆行驶过程中对当前路面进行动态识别,同时将当前路面的最佳滑转率作为ASR系统的目标滑转率,当驱动力矩过大时通过调整制动力矩防止车轮过度滑转。使用单轮模型分别在大功率起步和跃变路面持续加速时进行了仿真试验,结果表明:系统能够快速准确地完成路面识别,同时对车辆的行驶状态进行实时判断,当驱动力矩过大时车轮的滑转率基本保持在当前路面的最佳滑转率,避免车轮出现过度滑转,确保车辆获得最大的驱动力,同时保持横向稳定。

Simulation Study of ASR Based on Dynamic Road Identification

The current road was dynamically distinguished with the road adhesion coefficient as parame-ter during vehicles going. The brake torque was adjusted to prevent the wheel spinning excessively withthe best slip ratio of current road as the target slip ratio when the driving torque was too large. Simula-tion tests of high-power start and continuous acceleration on jumping road were conducted separatelyby the single wheel model. The results show this system can identify the road accurately and quicklyand judge the real-time motion state of vehicle. The wheel slip ratio remains at the best slip ratio of cur-rent road even if the driving torque is too large to avoid excessive spinning of wheels, to make sure thatthe vehicle can obtain the largest driving force and remain stable in lateral direction.