In order to solve the problem of the deterioration of the vehicle vertical vibration caused by the introduction of hub motor, to study the interaction mechanism between the electric vehicle (EV) and the road, to analyze the coupling relationship between vehicle vibration and unbalanced electromagnetic force, road surface irregularity, road vibration and other factors and their influence on the vertical performance of the vehicle, the hub motor driving EV and sandwich plate road coupling model is proposed and established. The electromagnetic excitation of switched reluctance motor (SRM) is obtained with Maxwell's tensor theory, the vertical dynamic response of viscoelastic sandwich plat road system is derived analytically by the methods of Galerkin and Duhamel integral, and then the proposed solution is verified by comparing the measurement data in the references. On this basis, the effects of motor excitation, road surface irregularity, vehicle-road coupling vibration and vehicle speed on road and vehicle response are analyzed. The results show that motor excitation has greater influence on the road response, followed by the influence of vehicle-road coupling, and motor excitation make the road response increase and fluctuate. Motor excitation has greater effects on tire dynamic load, body acceleration and roll angle acceleration, followed by suspension dynamic deformation and pitch angle acceleration, and the influence of vehicle-road coupling on vehicle response is relatively small. Moreover, when driving at low speed and smooth road, the effects of motor excitation and vehicle-road coupling vibration on vehicle response is more prominent and should be taken seriously. The negative effects introduced by the comprehensive excitations need to be considered in actual engineering and vertical dynamic analysis of hub motor driving EVs.

中文翻译：

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驱动电动汽车与夹芯板路面的轮毂电机耦合振动分析


为解决引入轮毂电机引起的车辆垂直振动劣化问题，研究电动汽车（EV）与道路的相互作用机理，分析车辆振动与不平衡电磁力、路面不平顺、道路振动等因素的耦合关系及其对车辆垂直性能的影响， 提出并建立了轮毂电机驱动 EV 与夹芯板道路耦合模型。利用麦克斯韦张量理论得到开关磁阻电机 （SRM） 的电磁激励，利用 Galerkin 和 Duhamel 积分的方法解析推导了粘弹性夹层平台道路系统的竖向动力响应，然后通过比较参考文献中的测量数据验证了所提出的解。在此基础上，分析了电机激励、路面不平顺、车路耦合振动和车速对道路和车辆响应的影响。结果表明，电机激励对道路响应的影响较大，其次是车路耦合的影响，电机激励使道路响应增加和波动。电机激励对轮胎动载荷、车身加速度和侧倾角加速度的影响较大，其次是悬架动态变形和俯仰角加速度，车路耦合对车辆响应的影响相对较小。此外，在低速行驶、路况平坦时，电机激励和车路耦合振动对车辆响应的影响更为突出，应予以重视。 在轮毂电机驱动电动汽车的实际工程和垂直动力学分析中，需要考虑综合激励引入的负面影响。