The embodiment of the invention discloses a motor torque zero-crossing control method. The method comprises the steps that the motor rotating speed, the gear rotating speed and the motor rotating speed change rate of a vehicle are obtained; in response to the situation that the motor torque of the vehicle meets the zero-crossing control condition, calculating a motor target rotating speed according to the gear rotating speed; calculating a motor target rotating speed difference according to the motor rotating speed and the motor target rotating speed; calculating a motor target rotating speed change rate according to the motor target rotating speed difference and the gear rotating speed change rate; the gear rotating speed change rate is determined according to the running state of the vehicle; and determining a motor target torque according to the motor rotating speed change rate and the motor target rotating speed change rate. The operation condition of the vehicle is automatically judged according to the motor rotating speed change rate and the gear rotating speed change rate, the motor target torque suitable for the current operation condition is calculated according to the different operation conditions of the vehicle, and then the motor torque zero-crossing control of the vehicle is achieved according to the corresponding motor target torque. And the smoothness of the torque zero-crossing control of the vehicle is improved.

    本申请实施例公开了一种电机扭矩过零控制方法,该方法包括:获得车辆的电机转速、齿轮转速与电机转速变化率;响应于车辆的电机扭矩满足过零控制条件,根据齿轮转速,计算电机目标转速;根据电机转速与电机目标转速,计算电机目标转速差;根据电机目标转速差与齿轮转速变化率,计算电机目标转速变化率;齿轮转速变化率为根据车辆的运行状态确定的;根据电机转速变化率与电机目标转速变化率,确定电机目标扭矩。即通过电机转速变化率与齿轮转速变化率自动判断车辆的运行工况,并根据车辆不同的运行工况计算出适合当前运行工况的电机目标扭矩,进而根据相应的电机目标扭矩实现车辆的电机扭矩过零控制,提高车辆的扭矩过零控制的平顺性。


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    Title :

    Motor torque zero-crossing control method, related device and automobile


    Additional title:

    一种电机扭矩过零控制方法和相关装置及汽车


    Contributors:
    GAN NING (author) / TANG DI (author) / WANG TINGTING (author) / LI ZHESHUAI (author)

    Publication date :

    2025-05-20


    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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