The invention relates to a vehicle and a brake torque control method thereof. The method comprises the following steps that: in a vehicle braking process, if the brake pedal opening degree is smallerthan a set brake pedal opening degree threshold value, the current slip rate of a wheel is estimated according to the speed, rolling radius and wheel center speed of a wheel; whether a vehicle turns or not is judged according to a steering wheel angle signal; if turning occurs, a wheel slip rate is controlled within a first slip rate interval; and if not, the wheel slip rate is controlled within asecond slip rate interval. According to the method, braking torque control is started in advance compared with linear driving during turning driving, so that the braking torque control opportunitiesof the vehicle under a turning working condition and a linear working condition are different, the braking stability and smoothness of the vehicle under the turning working condition are improved, andthe applicability of the vehicle is improved.

    本发明涉及一种车辆及其制动扭矩控制方法。该方法包括如下步骤:在车辆制动过程中,若制动踏板开度小于设定制动踏板开度阈值,根据车轮轮速、车轮滚动半径和车轮轮心速度估算车轮当前滑移率;根据方向盘转角信号判断车辆是否发生转弯;若发生转弯,将车轮滑移率控制在第一滑移率区间;若没有发生转弯,将车轮滑移率控制在第二滑移率区间。该方法实现转弯行驶时相比直线行驶提前启动制动扭矩控制,使车辆在转弯工况和直线工况的制动扭矩控制时机不同,提升车辆在转弯工况制动的稳定性和平顺性,提高车辆适用性。


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    Title :

    Vehicle and brake torque control method thereof


    Additional title:

    一种车辆及其制动扭矩控制方法


    Contributors:
    GUO XIAORAN (author) / HE LIANG (author) / SHI GUANNAN (author) / LU JIAHUA (author) / JIA LI (author)

    Publication date :

    2020-09-15


    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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