A control method for adaptively eliminating shaking of an electric automobile comprises the following steps that (1) a motor rotating speed signal is collected in real time, the real-time rotating speed of a motor is obtained, and the real-time rotating speed change rate of the motor is calculated through the real-time rotating speed of the motor; 2) processing the motor rotating speed signal by using a second-order low-pass filter and a second-order high-pass filter in sequence, and extracting signal data consistent with the frequency of the motor rotating speed signal as a real-time fluctuation quantity of the motor rotating speed; 3) obtaining the target torque of the motor at the current moment, and calculating the real-time change rate of the target torque of the motor through the target torque of the motor; (4) judging whether torque compensation is needed or not according to the real-time rotating speed change rate of the motor, the real-time fluctuation quantity of the rotating speed of the motor and the real-time change rate of the target torque of the motor, if not, repeating the steps (1) to (3) until torque compensation is needed, and carrying out next-step processing; and 5) calculating a torque compensation value, and enabling the real-time output torque of the motor to be equal to the sum of the target torque of the motor and the torque compensation value.

    一种用于自适应消除电动汽车抖动的控制方法,包括以下步骤:1)实时采集电机转速信号,获取电机实时转速,并通过电机实时转速计算电机实时转速变化率;2)将电机转速信号依次利用二阶低通滤波器、二阶高通滤波器进行处理,提取与电机转速信号频率一致的信号数据作为电机转速实时波动量;3)获取当前时刻的电机目标扭矩,并通过电机目标扭矩计算电机目标扭矩实时变化率;4)通过电机实时转速变化率、电机转速实时波动量,以及电机目标扭矩实时变化率判断是否需要进行扭矩补偿,若不需要,则重复步骤1)至3),直到需要进行扭矩补偿为止,进行下一步处理;5)计算扭矩补偿值,使电机的实时输出扭矩等于电机目标扭矩与扭矩补偿值之和。


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    Title :

    Control method for adaptively eliminating shaking of electric vehicle


    Additional title:

    用于自适应消除电动汽车抖动的控制方法


    Contributors:
    LI JIANGHUA (author) / SI HONGLU (author) / SHU YUCHUN (author) / ZENG JIAN (author) / LI HONG (author) / LIN YUANZONG (author)

    Publication date :

    2024-07-26


    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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