吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (1): 74-82.doi: 10.13229/j.cnki.jdxbgxb20161178

• 论文 • 上一篇    下一篇

基于弹性连接结构的电动轮纵向振动特性

毛钰, 左曙光, 林福, 曹佳楠, 郑玉平   

  1. 同济大学 新能源汽车工程中心,上海 201804
  • 收稿日期:2016-11-01 出版日期:2018-02-26 发布日期:2018-02-26
  • 通讯作者: 左曙光(1968-),男,教授,博士生导师. 研究方向:汽车系统动力学与控制.E-mail: sgzuo@tongji.edu.cn
  • 作者简介:毛钰(1992-),男,博士研究生.研究方向:电动轮系统振动与控制.E-mail:maoyu1224@163.com
  • 基金资助:
    国家自然科学基金项目(51375343)

Longitudinal vibration characteristics analysis of electric wheel based on elastic coupling structure

MAO Yu, ZUO Shu-guang, LIN Fu, CAO Jia-nan, ZHENG Yu-ping   

  1. Clean Energy Automotive Engineering Center, Tongji University, Shanghai 201804, China
  • Received:2016-11-01 Online:2018-02-26 Published:2018-02-26

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摘要： 基于现有轮毂电机和轮辋刚性连接的电动轮结构形式,结合轮毂电机转矩波动激励和电动轮系统纵扭耦合振动模型揭示了轮胎和电机纵向振动问题,并确定了系统纵向振动所对应的主要参与模态,指出由于对振动主导的两阶旋转模态频率相距较大,电动轮系统在电机工作范围内整体振动特性较差。针对上述问题,采用轮毂电机和轮辋弹性连接的结构形式以规划电动轮系统模态特征。分析表明弹性连接能够降低电动轮系统两阶旋转模态频率并使二者相互靠近,进而能够缩短使电动轮系统产生共振的敏感电机转速范围,从而改善系统整体振动特性。最后通过连接参数对振动特性的影响分析确定了能够实现减振效果的弹性连接参数合理取值范围,为电动轮系统采用弹性连接构型进行优化设计提供了参考。

关键词: 车辆工程, 电动轮系统, 纵向振动, 弹性连接, 旋转模态

Abstract: Considering the existing electric wheel structure with rigid connection between in-wheel motor and rim, the longitudinal vibrations of tire and in-wheel motor are revealed based on torque ripple of in-wheel motor and the coupled longitudinal- torsional vibration model of electric wheel system. The analysis of corresponding modes to longitudinal vibration indicates that, the overall vibration performance of the electric wheel system during motor operation range deteriorates due to the separation of two dominant rotational modes. Therefore, structure scheme with elastic connection between in-wheel motor and rim is adopted to deploy modal parameters of the electric wheel system. Comparative analysis shows that elastic connection structure results in lower and closer frequencies of the two dominant rotational modes, thus improving the overall vibration performance. The reasonable connection parameter ranges are determined through impact factors of the tire and in-wheel motor longitudinal vibration, providing reference for structure design of electric wheel for vibration attenuation purpose.

Key words: vehicle engineering, electric wheel system, longitudinal vibration, elastic connection, rotational mode

中图分类号: 

  • U463
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