The invention relates to the technical field of electric vehicle control, in particular to an electric vehicle constant-speed cruise control method and system based on a fuzzy PID (Proportion Integration Differentiation) control algorithm, which comprises the following steps: after a vehicle control unit is initialized, a cruise function enters a prohibited state; when a driver presses down the cruise starting switch, the cruise function enters a quit state; when the cruise entering condition is met, the cruise function enters a waiting state; when a driver presses down the cruise setting switch or the cruise recovery switch, the cruise function enters a control state; and when the driver steps on the accelerator pedal and the required torque is greater than the cruise torque, the cruise function enters a take-over state. According to the method, starting and stopping of the cruise control can be controlled through simple operation logic, acceleration and deceleration of the vehicle can be conveniently controlled, meanwhile, the fuzzy control algorithm and the PID algorithm are combined, control over the vehicle speed is more convenient and smoother, comfort can be improved, and fuel can be saved to the maximum extent.

    本发明涉及电动汽车控制技术领域,更具体的说是涉及一种基于模糊PID控制算法的电车定速巡航控制方法和系统,包括有以下步骤:整车控制器初始化完成后,巡航功能进入禁止状态;当驾驶员按下巡航开启开关后,巡航功能进入退出状态;当进入巡航的条件满足后,巡航功能进入等待状态;当驾驶员按下巡航设置开关或巡航恢复开关后,巡航功能进入控制状态;当驾驶员踩下加速踏板,需求扭矩大于巡航扭矩时,巡航功能进入接管状态。本发明可通过简单的操作逻辑控制定速巡航的开启与关闭,并能够很方便的控制车辆的加减速,同时利用模糊控制算法和PID算法的结合,使得对车速的控制更加方便、平顺,既能提高舒适性,又能最大限度地节省燃料。


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    Title :

    Electric vehicle constant-speed cruise control method and system based on fuzzy PID (Proportion Integration Differentiation) control algorithm


    Additional title:

    基于模糊PID控制算法的电车定速巡航控制方法和系统


    Contributors:
    ZHAO ZIMING (author) / LI QINGHUA (author)

    Publication date :

    2024-08-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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