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

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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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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

CLC Number: 

  • U463
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