The embodiment of the invention discloses a method and a system for improving torsional vibration of the half shaft of an electric vehicle and the electric vehicle. The method comprises the step thatclosed-loop compensation is conducted according to current half-axle torsional vibration data. The system comprises: a half-shaft torsional vibration data measuring mechanism used for obtaining current half-shaft torsional vibration data; and a controller which is used for calculating to obtain a compensation amount according to the current half-shaft torsional vibration data and controlling the motor based on the compensation amount. The problem of shaking caused by torsional vibration of the half shaft is solved, and the service life of the device is prolonged on the premise that the acceleration performance of the whole vehicle is not affected.

    本公开实施例公开了一种改善电动汽车半轴扭振的方法、系统及电动汽车,该方法为根据当前半轴扭振数据进行闭环补偿。系统包括半轴扭振数据测量机构,用于获得当前半轴扭振数据;以及控制器,用于根据所述当前半轴扭振数据计算获得补偿量,并基于所述补偿量控制电机。本发明解决了半轴扭振带来的抖动问题,在不影响整车加速性能的前提下延长器件使用寿命。


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    Title :

    Method and system for improving torsional vibration of half shaft of electric vehicle and electric vehicle


    Additional title:

    一种改善电动汽车半轴扭振的方法、系统及电动汽车


    Contributors:
    GAO CHANG (author)

    Publication date :

    2020-04-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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