The invention discloses a rotating speed coordination control method of a dual-motor electric vehicle. The method comprises the following steps: the driving speed of the vehicle is detected, and whenthe driving speed exceeds a first preset value or when the driving speed exceeds the first preset value and the absolute value of a rotating speed difference between a front axle and a rear axle doesnot exceed a second preset value, two target torque signals are generated by a vehicle control unit and are respectively transmitted to a front axle motor controller and a rear axle motor controller to make the front axle motor and the rear axle motor enter a torque open-loop control mode; and when the driving speed does not exceed the first preset value and the absolute value of the rotating speed difference between the front axle and the rear axle exceeds the second preset value, the vehicle control unit generates a target torque signal and transmits the target torque signal to the rear axlemotor controller to make a rear axle motor enter a torque open-loop control mode, and the front axle motor controller takes the rotating speed of the rear axle motor as an input signal to make a front axle motor enter a differential control mode. The target torques of the motors can be adjusted according to the actual running state of the vehicle, so that the rotating speed difference of front and rear wheels is reduced.

    本发明公开了一种双电机电动汽车的转速协调控制方法,包括检测汽车的行驶速度,当行驶速度超过第一预设值或者当行驶速度超过第一预设值且前后轴的转速差的绝对值没有超过第二预设值时,由整车控制器生成两个目标转矩信号并分别输送至前后轴电机控制器中,使前轴电机和后轴电机均进入转矩开环控制模式;当行驶速度没有超过第一预设值且前后轴的转速差的绝对值超过第二预设值时,由整车控制器生成一个目标转矩信号并输送至后轴电机控制器中,以使后轴电机进入转矩开环控制模式,所述前轴电机控制器以后轴电机的转速作为输入信号,以使所述前轴电机进入差速控制模式。本发明能根据汽车实际运行状态来调节电机的目标转矩,使前后车轮转速差减小。


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    Titel :

    Rotating speed coordination control method of dual-motor electric vehicle


    Weitere Titelangaben:

    一种双电机电动汽车的转速协调控制方法


    Beteiligte:
    TIAN SHAOPENG (Autor:in) / MA LE (Autor:in) / YANG CAN (Autor:in) / ZHENG QINGXING (Autor:in) / LIU GUANLIN (Autor:in) / LIU YIYI (Autor:in) / WU DIRUI (Autor:in) / YANG YU (Autor:in) / LIU HAOSEN (Autor:in)

    Erscheinungsdatum :

    2020-04-28


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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




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