摘要
针对分布式驱动电动汽车存在转矩波动和非簧载质量增加的问题,建立了整车刚柔耦合多体系统模型,同时考虑永磁同步电机磁场的非正弦分布,建立了相应的Matlab/Simulink模型,并利用两者联合仿真模型研究了转矩波动及非簧载质量对电动汽车舒适性的影响规律。基于响应面近似模型,利用多目标优化方法对车辆舒适性进行了稳健性优化。结果表明,优化后不仅提高了车辆的舒适性,同时也提高了车辆的可靠性。
For the problem of torque fluctuation and increased unsprung mass in distributed-drive electric vehicle, a vehicle rigid-flexible coupling model is established. Then in consideration of the non-sinusoidal distribution of magnetic field of permanent magnet synchronous motor, a Matlab/Simulink simulation model is established, which is used to study the effect law of torque fluctuation and unsprung mass on electric vehicle＇s ride comfort. Based on the response surface approximation model, robust optimization is made to vehicle comfort with the multi- objective optimization method. The results show that after optimization, both the car＇s ride comfort and reliability are improved.
出处
《汽车技术》
北大核心
2016年第1期13-18,共6页
Automobile Technology
基金
国家重点基础研究发展计划("973项目")(2011CB711200)
关键词
电动汽车
分布式驱动
转矩波动
非簧载质量
舒适性
Electric vehicle
Distributed-drive
Torque fluctuation
Unsprung mass
Ride comfort
