The embodiment of the invention discloses an electric vehicle crawling control method and device, and the method comprises the steps: 1, calculating the maximum torque Ts allowed by a current acceleration dimension and the maximum torque Talpha allowed by jerk in real time according to the real-time speed Sfdbk of a feedback motor after a motor controller enters a crawling mode; and 2, calculating in real time according to the Ts and the Talpha to obtain a final allowable torque amplitude limit T1, and outputting a torque instruction according to the torque amplitude limit T1 to maintain the vehicle speed at a creeping speed level. By introducing the maximum torque of two dimensions of acceleration and jerk, the problems of rapidity, comfort and adaptability to various different working conditions can be well solved.

    本发明实施例公开了一种电动汽车蠕行的控制方法及装置,所述方法包括:步骤1:在电机控制器进入蠕行模式后,根据反馈电机实时速度Sfdbk,实时计算当前加速度维度允许的最大转矩Ts和加加速度允许的最大转矩Tα;步骤2:根据Ts和Tα实时计算得到最终允许的转矩限幅Tl,根据转矩限幅Tl输出转矩指令,使车速维持在蠕行速度水平。本发明通过引入加速度和加加速度两个维度的最大扭矩可以很好的解决快速性、舒适性和各种不同工况的适应性问题。


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    Title :

    Electric vehicle crawling control method and device


    Additional title:

    电动汽车蠕行的控制方法及装置


    Contributors:
    ZHANG WEI (author) / LI HAO (author)

    Publication date :

    2021-04-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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