The invention belongs to the field of automobile driving safety, and relates to an automobile torque monitoring fault diagnosis processing method, system and device and a medium. According to the method, the fault level is divided into two levels according to the actual torque and the torque demand, and if the absolute value of the actual torque is larger than the absolute value of the torque demand and the duration time exceeds the first threshold time, it is judged that the torque monitoring first-level fault occurs; if it is judged that the fault is the torque monitoring first-level fault, the difference value obtained by subtracting the absolute value of the torque demand from the absolute value of the actual torque is increased, and the duration time exceeds second threshold time, it is judged that the fault is the torque monitoring second-level fault; after it is judged that the torque monitoring first-level fault occurs, if the vehicle speed is larger than or equal to the threshold speed, the output torque is reduced according to the gradient, and if the vehicle speed is smaller than the threshold speed, torque output is forbidden; and if the torque monitoring secondary fault is judged, prohibiting torque output. The method can prevent the unexpected output of the torque of the motor from being too large, and prevents the vehicle from suddenly losing power during high-speed driving due to fault protection.

    本发明属于汽车行驶安全领域,涉及一种汽车扭矩监控故障诊断处理方法、系统、设备和介质。本发明根据实际扭矩与扭矩需求将故障等级分为两级,若实际扭矩的绝对值大于扭矩需求的绝对值,且持续时间超过第一阈值时间,则判定为扭矩监控一级故障;若判定为扭矩监控一级故障后,且实际扭矩的绝对值减去扭矩需求的绝对值的差值变大,持续时间超过第二阈值时间,则判定为扭矩监控二级故障;判定为扭矩监控一级故障后,若车速大于或等于阈值速度,则按照梯度降低输出扭矩,若车速小于阈值速度,则禁止扭矩输出;若判定为扭矩监控二级故障,则禁止扭矩输出。本发明能够防止电机扭矩非预期输出偏大,防止车辆因故障保护导致车辆在高速行驶时突然失去动力。


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    Title :

    Automobile torque monitoring fault diagnosis processing method, system, equipment and medium


    Additional title:

    汽车扭矩监控故障诊断处理方法、系统、设备和介质


    Contributors:
    JIA SHAOQING (author) / CHEN XINQIANG (author) / LIANG CHANGFEI (author) / ZHU GANG (author)

    Publication date :

    2024-11-15


    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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