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Study on adverse effect suppression of hub motor driven vehicles with inertial suspensions
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering ( IF 1.7 ) Pub Date : 2021-06-30 , DOI: 10.1177/09544070211029232
Xiaofeng Yang 1 , Hang Song 1 , Yujie Shen 2 , Yanling Liu 1
Affiliation  

With increasingly severe energy supply and environmental pollution, Hub Motor Driven Vehicle (HMDV) have become the ideal configuration for future electric vehicles. The adverse effect caused by the significant increase in HMDV unsprung mass directly affects the vehicle ride comfort and handling stability, becomes a technical bottleneck for theoretical research and industrial development to be solved urgently. The HMDV adverse effect should be suppressed by the vehicle suspension system, which can be classified as vertical motion inertia instability caused by the increase of unsprung mass, but the lack of inertial elements in the conventional suspension “damping-spring” structure restricts the overall performance of the suspension. Therefore, the inertial suspension containing the inertial element “inerter” is utilized to effectively distribute the HMDV vertical motion inertia to suppress its adverse effects. First, the adverse effects of increased unsprung mass on vehicle ride comfort and road friendliness are studied. Then, the inertial suspension models of different structures are established and their impedance expressions are derived. Thirdly, the impact of the inertance in the inertial suspension on the suppression of the HMDV adverse effect is studied. Finally, the particle swarm optimization algorithm is utilized to optimize the parameters of the inertial suspension to improve the performance of the suspension. The results show that the inertial suspension can reduce the RMS value of body acceleration and dynamic tire load. The RMS value of body acceleration and dynamic tire load of the L4 structure is reduced by 8.1% and 16.38% respectively. It shows that the inertial suspension can effectively suppress the HMDV vertical adverse effect, improve the HMDV ride comfort and road friendliness, and lay the foundation for the subsequent suppression research.



中文翻译:

轮毂电机驱动惯性悬架车辆不良影响抑制研究

随着能源供应和环境污染日益严重,轮毂电机驱动汽车(HMDV)已成为未来电动汽车的理想配置。HMDV簧下质量显着增加带来的不利影响直接影响车辆的平顺性和操纵稳定性,成为理论研究和产业发展亟待解决的技术瓶颈。HMDV不利影响应由车辆悬架系统抑制,可归类为簧下质量增加引起的垂直运动惯性不稳定性,但传统悬架“阻尼-弹簧”结构中惯性元件的缺乏限制了整体性能的暂停。所以,利用包含惯性元件“inerter”的惯性悬架,有效分配HMDV垂直运动惯性,抑制其不利影响。首先,研究了增加的簧下质量对车辆乘坐舒适性和道路友好性的不利影响。然后,建立了不同结构的惯性悬挂模型,并推导出了它们的阻抗表达式。第三,研究了惯性悬架中的惯性对抑制HMDV不利影响的影响。最后,利用粒子群优化算法对惯性悬架的参数进行优化,以提高悬架的性能。结果表明,惯性悬架可以降低车身加速度和动态轮胎载荷的RMS值。L4结构的车身加速度和动态轮胎载荷的RMS值分别降低了8.1%和16.38%。表明惯性悬架能够有效抑制HMDV垂直不良影响,提高HMDV的乘坐舒适性和道路友好性,为后续抑制研究奠定基础。

更新日期:2021-07-01
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