纯电动汽车脉冲激励下残余振动的多目标优化  

Multi-Objective Optimization of Residual Vibration Under Pulse Excitation of Rear-Mounted Pure Electric Vehicle

作　　者：曾发林[1] 王佳圣 ZENG Fa-lin;WANG Jia-sheng(School of Automotive and Transportation Engineering Jiangsu University,Jiangsu Zhenjiang 212013,China)

机构地区：[1]江苏大学汽车工程研究院,江苏镇江212013

出　　处：《机械设计与制造》2024年第4期38-42,50,共6页Machinery Design & Manufacture

摘　　要：利用Adams/Car软件建立某电机后置纯电动汽车的整车虚拟样机模型,并展开对电动汽车过坎冲击残余振动问题的研究。建立一个新的优化目标—振衰度来表示残余振动的大小,并利用Isight集成Adams/Car、MATLAB模块对残余振动进行两次优化目标不同的优化。首次优化目标是振衰度和后座椅垂向加速度峰值,第二次优化目标是后座椅垂向加速度峰值,并将两次优化结果作对比。仿真结果表明,首次优化目标对残余振动优化的效果好于第二次,说明新建的优化目标—“振衰度”能较好地衡量残余振动衰减速度的快慢,以此为优化目标对残余振动优化效果较好。Adams/Car software was used to establish a complete vehicle virtual prototype model of a pure electric vehicle with a rear motor,and it was researched that the problem of residual vibration caused by electric vehicle passing through the hurdle.A new opotimization goal called vibration attenuation was established to indicate the size of residual vibration.Isight was used to in-tegrate modules of Adams/Car、MATLAB and two optomizations was performed with different optimization goals for residual vi-bration.The first optimization target is the vibration attenuation and the peak vertical acceleration of the rear seat,and the sec-ond optimization target is the peak vertical acceleration of the rear seat,and the two optimization results are compared.The simu-lation results show that the effect of the first optimization goal on the residual vibration optimization is better than the second time,indicating that the newly-built optimization goal-"Vibration Decay"can better measure the magnitude of the residual vi-bration,and taking this as the optimization goal has a better effect on residual vibration optimization.

关 键 词：残余振动 过坎平顺性 多体动力学分析 多目标优化 

分 类 号：TH16[机械工程—机械制造及自动化] U461.4[机械工程—车辆工程]