摘要针对分布式电动汽车中簧下质量增大，车辆平顺性和车轮接地性恶化的问题，本文设计了一种新型齿轮连杆式轮边动力吸振器。评估其在多连杆悬架中空间布置的可行性。考虑路面不平度与电机驱动时作用在其壳体上的反力矩，建立系统的动力学模型并推导其振动力学微分方程，利用MATLAB/simulink建立三自由度振动模型，在新欧洲行驶循环(New European Driving Cycle NEDC)工况下得到时域内的系统响应；结合计算结果分析动力吸振器弹簧刚度阻尼对车身加速度、车轮动载荷和电机振动的影响作用，并进行动力吸振器弹簧刚度和阻尼的优化设计；最后将该系统与传统汽车和一般轮毂电机驱动系统对比，分析其改善车辆平顺性和接地性的效果。结果表明，该新型齿轮连杆式轮边动力吸振器可以合理布置在多连杆悬架中，并可以显著改善分布式驱动汽车车辆平顺性和车轮接地性。
Abstract：To solve the problem of the large unsprung mass of distributed driving system, this paper designed a new type of gear-linkages dynamic absorber. And the spatial arrangement of a wheel drive system with a swing motor as dynamic vibration absorber was evaluated in the multi-link suspension. Considering the anti-torque of traction and road roughness, the kinetic equations and three degrees of freedom vibration in MATLAB software were established. Under the New European Driving Cycle (NEDC) condition, the time domain response was acquired through Simulink system. Then with the target of the body acceleration, wheel dynamic load and vibration condition of motor, dynamic vibration absorber’s stiffness and damping were optimized. Then its effect on improving vehicle comfort and wheel ground adhesion were compared with traditional car and normal in-wheel drive ( IWD) system based on body acceleration and wheel dynamic load. The results show that the wheel drive system with a swing motor as dynamic vibration absorber is feasible in the multi-link suspension. And vehicle ride comfort and ground adhesion are improved effectively compared with the in-wheel drive system and traditional drive system．
陈辛波1,2 王叶枫1 王威1 朱剑飞3 孙浩琪1. 基于齿轮连杆的新型动力吸振式轮边电驱动系统研究与设计[J]. 振动与冲击, 2016, 35(18): 46-51.
Chen Xinbo1,2 Wang Yefeng1 Wang Wei1 Zhu Jianfei3 Sun Haoqi1. Research and design of a new type of close wheel drive system using motor as dynamic absorber and gear-linkages. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(18): 46-51.
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