The invention provides a vehicle driving speed control method and system. The method comprises the steps that the driving speed of a vehicle and the opening degree of an accelerator pedal are monitored in real time, the current driving speed of the vehicle, a first opening degree value of the accelerator pedal after the opening degree of the accelerator pedal is changed and an accelerator pedal opening degree reduction amplitude value are obtained, and a corresponding target vehicle speed is obtained according to the first opening degree value of the accelerator pedal; whether a driver intendsto decelerate or not is determined according to the current driving speed of the vehicle, the target vehicle speed and the accelerator pedal opening reduction amplitude value; and if the driver intends to decelerate, expected braking strength of the driver is obtained through the current driving speed of the vehicle and the target vehicle speed, the power generation torque of a vehicle motor is controlled and adjusted according to the expected braking strength, and the vehicle is controlled to decelerate and run. The contradiction between the electric braking strength and the comfort of a driver is balanced, and the energy consumption level of a vehicle is improved.

    本发明提供一种车辆行驶速度控制方法和系统,该方法包括:实时监控车辆行驶速度和油门踏板开度,获得车辆当前行驶速度、油门踏板开度变化后的油门踏板第一开度值以及油门踏板开度减小幅度值,并根据所述油门踏板第一开度值获得对应的目标车速;根据所述车辆当前行驶速度、目标车速以及油门踏板开度减小幅度值判断驾驶员是否有减速意图;若所述驾驶员有减速意图,则通过所述车辆当前行驶速度和所述目标车速获得所述驾驶员预期的制动强度,并根据所述预期的制动强度控制调整所述车辆电动机的发电扭矩,控制车辆减速行驶。本发明平衡了电制动强度与驾驶员舒适性之间的矛盾,提升了车辆的能耗水平。


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    Title :

    Vehicle driving speed control method and system


    Additional title:

    一种车辆行驶速度控制方法和系统


    Contributors:
    LI RUNDONG (author) / TAN CHANGPING (author) / GAO TIANYI (author) / LIU FANG (author) / SU JIANYUN (author)

    Publication date :

    2020-05-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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