纯电动汽车动力总成悬置系统设计方法  

Design Method of the Powertrain Mounting System of Pure Electric Vehicles

作　　者：朱鑫 刘晓昂[1] 陈勇[1] 蒋春雷 ZHU Xin;LIU Xiaoang;CHEN Yong;Jiang Chunlei(School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China;Ningbo Fengmao Far-East Rubber Co., Ltd., Yuyao 315400, Zhejiang China)

机构地区：[1]河北工业大学机械工程学院,天津300130 [2]宁波丰茂远东橡胶有限公司,浙江余姚315400

出　　处：《噪声与振动控制》2019年第2期85-89,共5页Noise and Vibration Control

基　　金：国家自然科学基金青年基金资助项目(51705128)

摘　　要：根据纯电动汽车和内燃机汽车在动力总成激励上的不同,建立某型纯电动汽车动力总成6自由度动力学模型,以动力总成固有频率和能量分布合理分配为优化目标,各个悬置静刚度和安装位置为设计变量,应用MATLAB/Isight对悬置系统参数进行优化,优化后固有频率和能量分布均满足设计要求。为控制动力总成质心在各工况下的位移,对各悬置非线性段刚度及拐点进行设计,设计后的动力总成质心位移满足位移控制要求。According to the difference of the powertrain excitation between the pure electric vehicle (PEV) and the traditional internal combustion engine car, the 6-DOF dynamic model of a PEV powertrain is established. Firstly, with the reasonable natural frequencies and energy distributions of the powertrain as the target, and the mount static stiffness and the installation positions as the design variables, the MATLAB / Isight software is used to optimize the parameters of the suspension system. After the optimization, the natural frequencies and the energy distributions can satisfy the design requirements. In order to control the displacement of powertrain centroid in the typical and extreme conditions, the static stiffness and the x-coordinates of the turning points of each mount in the nonlinear sections are designed. After the design, the displacement of the powertrain centre of gravity can satisfy the control requirements.

关 键 词：振动与波 纯电动汽车 动力总成悬置系统 固有频率 位移控制 

分 类 号：U469.72[机械工程—车辆工程]