基于半车振动模型的轮边驱动电动车平顺性分析

Ride Comfort Analysis of Wheel Drive Electric Vehicle Based on Half-car Vibration Model

建立兼顾电机和路面耦合激励作用的半车四自由度振动模型,采用白噪声滤波法,以B级路面和轮边电机作为双激励源对时域内的轮边驱动电动车进行平顺性仿真,结果表明电机激励对轮边驱动电动车的平顺性影响明显。采用AMGA法车辆参数进行多目标优化并仿真分析,结果表明优化后的车辆平顺性改善显著。

The four-degree-of-freedom vibration model of the half-car considering the coupling excitation of the motor and the road surface is established,and the white noise filtering method is used to simulate the ride comfort of the wheel-drive electric vehicle in the time domain with the B-level road surface and the wheel-drive motor as the dual excitation sources.The results show that the motor excitation has a significant impact on the ride comfort of the wheel-drive electric vehicle.Multi-objective optimization of vehicle parameters using AMGA method and simulation analysis show that the optimized vehicle ride comfort is significantly improved.