The invention discloses a vehicle motion control method and system based on rotating speeds of front and rear axles. The method comprises the following steps: collecting running parameters of a vehicle; calculating the target rotating speeds of the front-axle motor and the rear-axle motor at the current moment, and calculating the rotating speed difference between the target rotating speeds of the front-axle motor and the rear-axle motor at the current moment and the target execution rotating speed at the previous moment; calculating the maximum synchronization number of the motor, and calculating the single-step rotating speed coordination quantity of front and rear shaft motors; calculating a motor torque reduction coefficient, and calculating a target execution rotating speed of the front and rear axle motor at the current moment; controlling the front-rear shaft motor to execute the corresponding target execution rotating speed at the current moment, and updating the target execution rotating speed of the front-rear shaft motor at the previous moment to the target execution rotating speed at the current moment; and the operation is repeated until the front axle motor and the rear axle motor are judged to enter a rotating speed stable state. According to the invention, the target execution rotating speed of the front-axle motor or the rear-axle motor at the current moment can be synchronously adjusted to the target rotating speed at the current moment.

    本发明公开了一种基于前后轴转速的车辆运动控制方法及系统,其中方法包括:收集车辆的运行参数;计算前轴电机和后轴电机当前时刻的目标转速,计算前轴电机和后轴电机当前时刻的目标转速和上一时刻的目标执行转速的转速差;计算电机最大同步数,计算前后轴电机的单步转速协调量;计算电机转矩缩小系数,计算前后轴电机当前时刻的目标执行转速;控制前后轴电机执行对应的当前时刻的目标执行转速,更新前后轴电机上一时刻的目标执行转速为当前时刻的目标执行转速;重复上述操作,直至判断前轴电机和后轴电机均进入转速稳定状态。本发明能将前轴电机或后轴电机当前时刻的目标执行转速同步调整至当前时刻的目标转速。


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    Title :

    Vehicle motion control method and system based on rotating speeds of front shaft and rear shaft


    Additional title:

    一种基于前后轴转速的车辆运动控制方法及系统


    Contributors:
    HU YANTING (author) / WANG JIBIN (author) / ZHAO SHUAI (author) / XU HAO (author) / WANG MENG (author)

    Publication date :

    2025-02-07


    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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