汽车工程

汽车工程 ›› 2018, Vol. 40 ›› Issue (10): 1206-1214.doi: 10.19562/j.chinasae.qcgc.2018.010.013

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轮毂电机驱动电动汽车的转向性能优化*

张志勇1,2, 张风2, 黄彩霞3, 刘鑫1,2   

  1. 1.工程车辆安全性设计与可靠性技术湖南省重点实验室,长沙 410114;
    2.长沙理工大学汽车与机械工程学院,长沙 410114;
    3.湖南大学机械与载运工程学院,长沙 410082
  • 收稿日期:2017-08-21 出版日期:2018-10-25 发布日期:2018-10-25
  • 通讯作者: 张志勇,副教授,博士,E-mail:zzy04@163.com。
  • 基金资助:
    *国家自然科学基金(51675057)和湖南省教育厅科研项目(15B008,16C0906)资助。

Steering Performance Optimization of an In-wheel Motor Drive Electric Vehicle

Zhang Zhiyong1,2, Zhang Feng2, Huang Caixia3, Liu Xin1,2   

  1. 1.Key Laboratory of Lightweight and Reliability Technology for Engineering Vehicle, Hunan Province, Changsha 410114;
    2.College of Automobile and Mechanical Engineering, Changsha University of Science and Technology, Changsha 410114;
    3.College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082
  • Received:2017-08-21 Online:2018-10-25 Published:2018-10-25

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摘要： 针对轮毂电机给前悬架结构设计和车辆操纵稳定性带来的不利影响,进行了前悬架结构设计和参数优化。在可利用的空间中设计了适合轮毂电机驱动的前悬架转向节结构,并初步确定了关键硬点的坐标值;以转向轻便性为优化目标,以转向回正性为约束条件,建立了车轮定位参数优化模型,并利用Isight和Adams/Car集成平台对转向节的硬点坐标值进行参数优化;对转向轻便性和转向回正性分别进行了数值仿真和实车试验。结果表明,优化后车辆的综合转向性能得到明显改善。

关键词: 电动汽车, 参数优化, 轮毂电机, 转向性能, 车轮定位参数

Abstract: Aiming at the adverse effects of in-wheel-motor on the design of front suspension structure and vehicle handling stability, the design of front suspension structure and parameters optimization are carried out. Firstly a steering knuckle structure suitable for the front suspension of in-wheel-motor drive vehicle is designed within available space and the coordinates of key hard-points are preliminarily determined. Then with steering handiness as optimization objective and steering returnability as constraint, an optimization model for wheel alignment parameters is established and a parameter optimization is conducted on the hard-points coordinates of steering knuckle by using integrated platform of Isight and Adams/Car. Finally both numerical simulation and real vehicle test are performed on steering handiness and returnability. The results show that after optimization the overall steering performances of vehicle are obviously improved

Key words: electric vehicles, parameters optimization, in-wheel-motor, steering performance, wheel alignment parameters