基于能量解耦的汽车动力总成悬置系统优化设计

摘要

In order to solve the vibration issue for power assembly suspension system of some vehicle,combine multi fi＇eedom system vibration decoupling and natual frequency matching theory,use ADAMS to set up power assembly suspension system to do simulation analysis.Meanwhile in decoupling rate target function,optimize for suspension system through genetic algorithm in MATLAB software.The consequence shows,optimize for suspension stiffness can improve the decoupling rate effectively,improve the NVH performance of NVH.%为了解决某款车的动力总成悬置系统振动问题，结合多自由度系统振动解耦和固有频率匹配理论，应用ADAMS建立动力总成悬置系统模型进行仿真分析。同时以解耦率目标函数，通过MATLAB软件中的遗传算法对悬置系统进行了优化。结果表明，对悬置刚度进行优化能有效提高解耦率，改善系统的NVH性能。