The invention belongs to the technical field of vehicle stability control, and particularly relates to a vehicle turning auxiliary safety control method and system. The method comprises the following steps: estimating a side slip angle of a vehicle based on a three-degree-of-freedom vehicle model by using acceleration and angular velocity of a vehicle mass center position, vehicle wheel speed and a steering wheel angle; drawing a phase plane graph about the side slip angle and the speed of the side slip angle according to the side slip angle, and determining stable region parameters of the current working condition of the vehicle by utilizing the relation among the front wheel rotation angle, the adhesion coefficient between the tire and the road surface, the vehicle speed and the stable region parameters, and determining the stable region parameters of the current working condition of the vehicle based on the phase plane graph and the stable region parameters of the current working condition of the vehicle. Judging the state of the vehicle; and when the vehicle is in an unstable state, the motor is controlled to reduce the torque, so that the stability control of the vehicle is realized based on the information collected by the originally configured sensor of the vehicle, and the vehicle configuration cost is reduced.

    本发明属于车辆稳定性控制技术领域,具体涉及一种车辆转弯辅助安全控制方法及系统。该方法包括:利用车辆质心位置加速度、角速度、车辆轮速和方向盘转角,基于三自由度车辆模型估算车辆的质心侧偏角;根据质心侧偏角绘制关于质心侧偏角与质心侧偏角速度的相平面图,利用前轮转角、轮胎与路面之间的附着系数、车速与稳定区域参数的关系确定车辆当前工况的稳定区域参数,基于相平面图和车辆当前工况的稳定区域参数,判断车辆所处的状态;当车辆处于非稳定状态时,控制电机降扭,从而基于车辆原本配置的传感器采集的信息实现车辆的稳定性控制,降低了车辆配置成本。


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    Title :

    Vehicle turning auxiliary safety control method and system


    Additional title:

    一种车辆转弯辅助安全控制方法及系统


    Contributors:
    GUO XIAORAN (author) / DONG XIAOKUN (author) / HUANG KUN (author) / XIA TIANXING (author) / PENG JINLEI (author) / LIU ZONGJIAN (author) / DING DING (author) / WEI QING (author) / HE LIANG (author)

    Publication date :

    2024-07-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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