The invention relates to a snub braking reminding control strategy of a front collision early warning system. The snub braking control method utilizes the negative torque characteristic of a driving motor, responds to the negative torque requested by an FCW and can be dragged reversely to achieve speed reduction, and comprises the steps: 1, acquiring the front vehicle distance, the vehicle speed and the vehicle speed of a vehicle, and calculating the collision time; (2) calculating the collision time according to the relative distance between the vehicle and the front vehicle divided by the relative vehicle speed; (3) dividing the collision into two grades according to the collision time, namely sound alarm at the first grade and snub braking reminding at the second grade. In combination with the vehicle driving motor, on the premise that the hardware cost is not increased, the snub braking reminding control strategy is suitable for the pure electric vehicle and the hybrid electric vehicle, and the applicability and universality of the snub braking control strategy are improved. And through snub braking reminding, safety reminding for a driver is enhanced, the safety performance of the vehicle is improved, and the good application and popularization value is achieved.

    本发明涉及前碰撞预警系统的一种短促制动提醒控制策略。一种前碰撞预警系统短促制动控制方法,利用驱动电机的负扭矩特性,响应FCW请求负扭矩可倒拖实现减速,步骤:1)获取前车距离、车速及自身车速,计算碰撞时间;2)根据与前车的相对距离除以相对车速计算碰撞时间:3)根据碰撞时间可将碰撞分为两个等级,一级为声音报警,二级为点刹提醒。本发明结合车辆驱动电机,在不增加硬件成本的前提下,使短促制动(点刹)提醒控制策略适用于纯电动车和混动车,增加了短促制动控制策略的适用性和广泛性。通过点刹制动提醒,增强对驾驶员的安全提示,提升了车辆安全性能,具有良好的推广应用价值。


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    Title :

    Snub braking control method for front collision early warning system


    Additional title:

    一种前碰撞预警系统短促制动控制方法


    Contributors:
    DENG JING (author) / LIU WEIDONG (author) / SHEN PENGFA (author) / WANG AICHUN (author) / HUANG SHAOTANG (author)

    Publication date :

    2021-07-09


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



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