东北大学学报(自然科学版) ›› 2022, Vol. 43 ›› Issue (8): 1113-1119.DOI: 10.12068/j.issn.1005-3026.2022.08.007

• 机械工程 • 上一篇    下一篇

随机路面下轮毂电机偏心对电动汽车平顺性影响

李杰, 贾长旺, 成林海, 赵旗   

  1. (吉林大学 汽车仿真与控制国家重点实验室, 吉林 长春130025)
  • 修回日期:2021-07-09 接受日期:2021-07-09 发布日期:2022-08-11
  • 通讯作者: 李杰
  • 作者简介:李杰(1964-),男,吉林双辽人,吉林大学教授,博士生导师; 赵旗(1967-),女,吉林长春人,吉林大学研究员.
  • 基金资助:
    汽车仿真与控制国家重点实验室自由探索项目(ASCL-Zytsxm-202001); 吉林省省校共建项目(SXGJSF2017-2-1-1); 国家自然科学基金国际(地区)合作与交流重点项目(61520106008).

Influence of In-Wheel Motors Eccentricity on Ride Comfort of Electric Vehicles on Random Roads

LI Jie, JIA Chang-wang, CHENG Lin-hai, ZHAO Qi   

  1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China.
  • Revised:2021-07-09 Accepted:2021-07-09 Published:2022-08-11
  • Contact: LI Jie
  • About author:-
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摘要: 为了分析轮毂电机偏心对电动汽车平顺性的影响,建立了考虑轮毂电机质量和轮毂电机激励的电动汽车平面4自由度振动模型,推导出相应的状态方程和输出向量表示,确定了平顺性评价指标.采用滤波白噪声方法建立了随机路面前轮激励,将Laplace变换和4阶对称Pade逼近相结合获得了随机路面后轮激励与随机路面前轮激励的关系,给出了典型的四相8/6极开关磁阻电机整体垂向激励的表示.实现了随机路面激励和轮毂电机激励的仿真,在B级路面上进行了4种工况的随机路面平顺性仿真和比较.结果表明,轮毂电机偏心对随机路面下电动汽车平顺性有着不可忽视的影响,设计电动汽车时需要考虑轮毂电机偏心引入的负效应.

关键词: 纯电动汽车;平顺性;随机路面;轮毂电机;电机偏心

Abstract: To analyze the influence of in-wheel motors eccentricity on the ride comfort of electric vehicles, a four degree-of-freedom vibration model of electric vehicles was established to consider the mass and excitation of in-wheel motors. The corresponding state equation and output vector expression were derived, and the ride comfort evaluation index was determined. The random road excitation of the front wheel was established by using the filtered white noise method. The random road excitation relationship between the rear wheel and the front wheel was obtained by combining the Laplace transformation and the fourth-order symmetric Pade approximation. The whole vertical excitation of a typical four-phase 8/6-pole switched reluctance motor was presented. The simulation of random road excitation and in-wheel motor excitation was realized, and the ride comfort simulation and comparison of four working conditions were carried out on a B-grade road. The results showed that in-wheel motors eccentricity has an important influence on the ride comfort of electric vehicles on random roads, and the negative effect of in-wheel motors eccentricity should be considered in the design of electric vehicles.

Key words: battery electric vehicle; ride comfort; random road; in-wheel motor; motors eccentricity

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