The invention discloses a pure electric four-wheel drive torque antiskid method and system, and relates to the technical field of torque control, and the method comprises the steps: collecting and calculating a front axle speed, a rear axle speed and a whole vehicle reference speed; the maximum value and the minimum value of the longitudinal safe vehicle speed of the whole vehicle are obtained through real-time calculation; and controlling a damping torque adjusting PID to output a damping torque value, and carrying out four-wheel drive torque distribution. According to the pure electric four-wheel drive torque anti-skid method, the torque algorithm of the rear axle is obtained through accumulation of three calculation source torques of acceleration feedforward, slip feedback and damping torque protection, the algorithm is compatible with PHEV and EV and is more suitable for an electric vehicle, a fixed torque distribution strategy is avoided through PID feedback, response is faster, the requirement of a driver is met during torque distribution, and the anti-skid effect is better. And the driving personality of the driver is better met. The method has better effects in the aspects of applicability, response delay and user requirements.

    本发明公开了一种纯电动四驱扭矩防滑方法及系统,涉及扭矩控制技术领域,包括:采集并计算前轴车速、后轴车速和整车参考车速;实时计算获取整车纵向安全车速最大和最小值;控制阻尼扭矩调节PID输出阻尼扭矩值,进行四驱扭矩分配。本发明提供的纯电动四驱扭矩防滑方法通过加速前馈、滑移反馈、阻尼扭矩保护3种计算来源扭矩的累加,得到后轴的扭矩算法是兼容PHEV EV更加适用于电车,通过PID反馈避免了固定的扭矩分配策略,响应更加快捷,进行扭矩分配时加入驾驶员的需求,更加符合驾驶员的驾驶个性。本发明在适用性、响应延迟和用户需求方面都取得更加良好的效果。


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    Titel :

    Pure electric four-wheel drive torque antiskid method and system


    Weitere Titelangaben:

    一种纯电动四驱扭矩防滑方法及系统


    Beteiligte:
    ZHOU YAFEN (Autor:in) / WU YIXIONG (Autor:in) / HE JIZHENG (Autor:in) / CAO YU (Autor:in) / LYU JUNCHENG (Autor:in)

    Erscheinungsdatum :

    2024-02-20


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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