The invention discloses a distributed driving bus torque distribution method based on real-time road conditions. The method comprises the following steps: a vehicle control unit carries out filteringprocessing on signals of all sensors; part of key vehicle state parameters are estimated by adopting a kinematics or dynamics method; the vehicle control unit pre-distributes the driving torque basedon vertical load transfer, so that the ground adhesion is fully utilized, and the controllability of the vehicle is improved; and the vehicle control unit estimates the optimal slip rate of the current road surface in real time according to a relation curve of the road surface adhesion coefficient and the slip rate. During low-speed driving, the dynamic property is preferably considered, and eachdriving wheel performs torque distribution by taking the respective current optimal slip ratio as a control target; during high-speed driving, stability is mainly taken into consideration; and duringstraight driving, average distribution is adopted, and driving torque distribution is performed by taking neutral steering as a target.

    一种基于实时路况的分布式驱动公交车转矩分配方法,包括:整车控制器对各个传感器信号进行滤波处理;采用运动学或动力学方法对部分关键车辆状态参数进行估算;整车控制器先基于垂向载荷转移对驱动转矩进行预分配,以便充分利用地面附着力,提高整车操控性;整车控制器根据路面附着系数和滑转率的关系曲线实时估算当前路面最佳滑转率。低速行驶时,优先考虑动力性,各驱动轮分别以各自当前最佳滑转率为控制目标进行转矩分配,高速行驶时,则以稳定性为主,直驶采用平均分配,转向以中性转向为目标进行驱动转矩的分配。


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    Titel :

    Distributed driving bus torque distribution method based on real-time road conditions


    Weitere Titelangaben:

    一种基于实时路况的分布式驱动公交车转矩分配方法


    Beteiligte:
    LIU ZHIWEI (Autor:in) / SU LIANG (Autor:in) / HUANG LING (Autor:in) / SONG GUANGJI (Autor:in)

    Erscheinungsdatum :

    2020-04-10


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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