The invention relates to an abrupt slope slow descent control method self-adaptive to a global vehicle speed gradient and a vehicle, and belongs to the field of vehicle control. For a vehicle matched with an electric drive system with a fixed transmission ratio, feedforward torque is obtained according to the current vehicle speed of the vehicle and the pre-obtained corresponding relation between the vehicle speed and the motor torque and according to the motor torque, the feedforward torque is superposed to a torque output value of vehicle speed closed-loop control, and the vehicle is controlled to reach the HDC target vehicle speed; the corresponding relation is in positive correlation within the peak torque range of the motor, and the vehicle speed in the corresponding relation is divided into an acceleration interval, an HDC constant torque interval and a deceleration interval along with the increase of the vehicle speed; the HDC constant torque interval corresponds to an HDC target vehicle speed interval; the motor torque corresponding to the HDC constant torque interval is a constant value, and the constant value is obtained through calculation according to the full-load mass, the HDC target vehicle speed and the HDC gradient intermediate value; and the vehicle speed is ensured to be stably reduced or increased to the target vehicle speed along with the increase or decrease of the motor torque.

    本发明涉及一种全域车速坡度自适应的陡坡缓降控制方法及车辆,属于整车控制领域。针对搭配固定传动比的电驱动系统的车辆,本发明根据车辆当前车速与预先获得的车速与电机扭矩的对应关系,根据电机扭矩得到前馈扭矩,将前馈扭矩叠加到车速闭环控制的扭矩输出值,将车辆控制到HDC目标车速;对应关系在电机峰值扭矩范围内是正相关的,对应关系中的车速随车速升高分为加速区间、HDC恒定扭矩区间和减速区间;HDC恒定扭矩区间对应HDC目标车速区间;HDC恒定扭矩区间对应的电机扭矩为恒定值,该恒定值根据满载质量、HDC目标车速、HDC坡度中间值计算得到;保证了车速随电机扭矩的增大或减小而平稳的减小或增大至目标车速。


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    Title :

    Universe vehicle speed gradient self-adaptive abrupt slope slow descent control method and vehicle


    Additional title:

    一种全域车速坡度自适应的陡坡缓降控制方法及车辆


    Contributors:
    WANG KAI (author) / LI DONGYANG (author) / LIU CHUANHUA (author) / REN XUEZHI (author)

    Publication date :

    2025-01-17


    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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