Study on the Dynamics of the In-Wheel Motor System
Study on the Dynamics of the In-Wheel Motor System
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DOI：
10.1109/tvt.2012.2207414
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发表时间：
2012-07
影响因子：
6.8
通讯作者：
Yutao Luo;Di Tan
中科院分区：
文献类型：
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作者：
Yutao Luo;Di Tan
本文提出了一种新的轮毂电机拓扑方案。该方案旨在克服由于电机嵌入车轮和路面粗糙度激励引起的电机磁隙（MMG）变形而导致的未弹起质量增加。通过安装橡胶衬套，可灵活地将内源质量与非弹簧质量隔离开来。同时，橡胶衬套能够吸收路面的振动能量，减轻MMG变形。首先，建立了四分之一车辆的振动动力学模型。然后对轴套刚度和阻尼进行了简单的分析。通过对带衬套和不带衬套两种方案的对比仿真，得出了一些有益的结果。有了橡胶衬套，车身振动加速度、轮胎动载荷、悬架动行程、磁隙变形（MGD）都能得到明显改善。特别是，MGD得到了90%以上的改进。因此，橡胶衬套可以明显改善IWM车辆的垂直动力学。该方案和分析方法可为IWM推进系统的发展提供参考。
In this paper, a novel in-wheel motor (IWM) topology scheme is brought forward. This scheme aims at conquering the unspung mass increase because of the motor embedded in the wheel and the motor magnet gap (MMG) deformation that arose by road surface roughness excitation. By mounting rubber bushings in the IWM device, the IWM mass is flexibly isolated from the unsprung mass. Synchronously, the rubber bushings can absorb the vibration energy from the road surface and abate the MMG deformation. Primarily, the quarter vehicle vibration dynamic model is set up. Then, bushing stiffness and damping are analyzed plainly. By contrastive simulations of the two types of IWM schemes with or without bushings, some useful results come out. With the rubber bushings, the body vibration acceleration, the tire dynamic load, the suspension dynamic travel, and the magnet gap deformation (MGD) can all achieve distinct improvements. In particular, MGD gets more than 90% improvement. Consequently, rubber bushings can observably improve the IWM vehicle vertical dynamics. The scheme and the analysis approach can be contributive to the development of the IWM propulsion system.