The invention relates to the technical field of automobile safety, in particular to a self-adaptive emergency braking method and system based on a road adhesion coefficient, and the method comprises the steps: obtaining vehicle driving data; according to the vehicle driving data and a magic tire model, the relation between the longitudinal force and the slip rate of the tire is obtained; estimating a road adhesion coefficient by adopting a recursive least square method based on the relationship between the longitudinal force and the slip rate of the tire; establishing a vehicle braking distance model; and obtaining a safe distance corresponding to the current road surface according to the road surface adhesion coefficient and a vehicle braking distance model. On-line recognition is carried out on the road surface based on the recursive least square method, the safe distance model is updated in real time according to the road surface information, good self-adaptability is achieved, the accuracy of data is conveniently guaranteed, and effective collision avoidance is achieved.

    本申请涉及汽车安全的技术领域,尤其是涉及一种基于路面附着系数的自适应紧急制动方法及系统,方法包括:获取车辆驾驶数据;根据所述车辆驾驶数据以及魔术轮胎模型,获取轮胎纵向力和滑移率的关系;基于所述轮胎纵向力和滑移率的关系,采用递推最小二乘法估计路面附着系数;建立车辆制动距离模型;根据所述路面附着系数以及车辆制动距离模型,获取当前路面对应的安全距离。基于递推最小二乘法对路面进行在线识别,根据路面信息实时更新安全距离模型,具有较好的自适应性,便于保证数据的准确性,以实现有效避撞。


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    Title :

    Self-adaptive emergency braking method and system based on road adhesion coefficient


    Additional title:

    基于路面附着系数的自适应紧急制动方法及系统


    Contributors:
    CHEN XUEMEI (author) / XIAO LONG (author) / HAN XINTONG (author) / YANG HONGWEI (author) / SHEN XIAOXU (author)

    Publication date :

    2023-06-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein





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