The invention provides a vehicle speed control method and a vehicle speed control system which are applied to the technical field of electric vehicle control, and the method comprises the steps that after the load state of a vehicle and the gradient of a driving road surface are obtained, the highest allowable vehicle speed of the vehicle is determined according to the load state, and the highest allowable vehicle speed is associated with an accelerator pedal of the vehicle; and then according to the gradient and the load state, the target output slope of the motor torque of the vehicle driving motor is determined, and according to the target output slope and the opening degree of the accelerator pedal, a motor torque instruction is output to a motor controller of the vehicle. According to the vehicle speed control method provided by the invention, the target output slope of the motor torque and the maximum allowable vehicle speed of the vehicle are determined based on the load state of the vehicle and the slope of the driving road surface, so that the stable control of the vehicle speed is realized, the driving smoothness is ensured, the energy consumption is reduced, and the use experience of a user is improved.

    本申请提供一种车速控制方法及车速控制系统,应用于电动车辆控制技术领域,该方法在获取车辆的负载状态和行驶路面的坡度后,根据负载状态确定车辆的最高允许车速,并将最高允许车速与车辆的油门踏板关联;然后根据坡度和负载状态,确定车辆行驶电机的电机扭矩的目标输出斜率,并根据目标输出斜率和油门踏板的开度,向车辆的电机控制器输出电机扭矩指令。本发明提供的车速控制方法,通过基于车辆的负载状态和行驶路面的坡度,确定电机扭矩的目标输出斜率以及车辆的最高允许车速,实现了对车辆速度的稳定控制,以及保证行驶平滑性,减少了能耗,并提高了用户的使用体验。


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    Title :

    Vehicle speed control method and vehicle speed control system


    Additional title:

    一种车速控制方法及车速控制系统


    Contributors:
    TAN YUANBO (author) / HENG DONGLING (author) / SHU HAO (author)

    Publication date :

    2024-04-12


    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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