The invention discloses a motor torque zero-crossing response control strategy for an electric vehicle, and the strategy comprises the following steps: a motor controller MCU calculates the absolute value DT of the torque difference between a torque instruction T1 issued by a vehicle control unit VCU and the actual output torque T2 of a motor in the last period; the absolute value DT of the torque difference is compared with a torque difference grading table to obtain a torque difference grade and a torque adjusting function corresponding to the grade, the torque adjusting function comprises three different stage adjusting functions, and the torque adjusting time dt of the three different stage adjusting functions and the absolute value Tc of the adjusted torque difference are adjusted according to the torque difference grade; and according to the three different stage adjustment functions, the actual output torque T2 of the motor in the last period is adjusted to the torque instruction T1 issued by the VCU, and the strategy not only can relieve the tooth breaking phenomenon generated when an accelerator is loosened in the starting and driving processes of the vehicle, but also is short in debugging time, and is more efficient and convenient.

    本申请公开了一种用于电动汽车的电机扭矩过零响应控制策略,包括以下步骤,电机控制器MCU计算整车控制器VCU下发的扭矩指令T1与上一周期电机实际输出扭矩T2的扭矩差的绝对值DT;将扭矩差的绝对值DT对照扭矩差分级表得到扭矩差级别以及该级别对应的扭矩调整函数,所述扭矩调整函数包括三个不同的阶段调整函数,三个不同的阶段调整函数的扭矩调整时间dt以及调整的扭矩差的绝对值Tc根据扭矩差级别调整;根据三个不同的阶段调整函数将上一周期电机实际输出扭矩T2调整至整车控制器VCU下发的扭矩指令T1,该策略不仅可以减轻车辆在起步和行驶中加油门松油门产生的打齿现象而且调试时间短,更加高效便捷。


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    Title :

    Motor torque zero-crossing response control strategy for electric vehicle and electronic equipment


    Additional title:

    用于电动汽车的电机扭矩过零响应控制策略及电子设备


    Contributors:
    ZHANG SHUBO (author) / CAO PENGKUN (author) / DU CHAOHUI (author) / HUANG SHAOGONG (author) / HUANG HONGJIAN (author) / CAO GUANHUI (author)

    Publication date :

    2023-08-08


    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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