考虑转矩波动的电动汽车悬架NVH性能参数优化  

Parameter Optimization of the Suspension NVH Performance of Electric Vehicle with Consideration of Torque Fluctuation

作　　者：李程祎[1] 左曙光[1] 段向雷[1] 

机构地区：[1]同济大学新能源汽车工程中心,上海201804

出　　处：《汽车工程》2013年第4期303-306,316,共5页Automotive Engineering

基　　金：国家重点基础研究发展计划(973计划)(2011CB711201)资助

摘　　要：为某轮边驱动电动汽车建立了悬架-轮胎-路面多体动力学模型,并以考虑转子磁场谐波影响的转矩波动模型为激励,依次用响应面法和梯度下降法对衬套和弹簧等悬架参数进行了两次优化。最终的结果表明,优化后明显减少了转矩波动对车身振动的影响,提高了悬架的NVH性能。A suspension-wheel-road multi-body dynamics model is built for a wheel-driven electric vehicle, and two optimizations with response surface method and gradient descent scheme respectively are conducted successively with torque fluctuation model as excitation, taking into account the effects of harmonic wave in rotor magnetic field. The final results show that optimizations markedly reduce the effects of torque fluctuation on car body vibration and improve the NVH performance of suspension.

关 键 词：电动汽车 悬架 电机转矩波动 NVH性能 优化 

分 类 号：U463.33[机械工程—车辆工程]