The invention discloses a maximum vehicle speed limiting method of an electric vehicle based on acceleration lead control. The method comprises the following steps of: 1, calculating vehicle resistance torque based on actual torque of a motor, 2, calculating required acceleration torque based on the vehicle resistance torque and accelerator pedal opening, specifically, subtracting the vehicle resistance torque from external characteristic torque of the motor to obtain drivable acceleration torque, and then multiplying the drivable acceleration torque by the actual accelerator pedal opening toobtain the required acceleration torque; and 3, calculating wheel-side required torque based on the limited vehicle speed, the required acceleration torque and the vehicle resistance torque. When themaximum speed of the electric automobile is limited in different automobile speed sections, no obvious impact or automobile speed overshoot exists.

    本发明公开了一种电动汽车基于加速度超前控制的最高车速限制方法,包括以下步骤:1.基于电机实际扭矩计算车辆阻力扭矩,2.基于车辆阻力扭矩和加速踏板开度计算需求加速扭矩:将电机外特性扭矩减去车辆阻力扭矩得到能够驱动的加速扭矩,然后乘以实际加速踏板开度得到需求加速扭矩;3.基于限制车速、需求加速扭矩以及车辆阻力扭矩计算轮边需求扭矩。使电动汽车的最高车速限制在不同车速度段进行限制时无明显冲击和无车速超调。


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    Title :

    Maximum speed limiting method of electric vehicle based on acceleration lead control


    Additional title:

    一种电动汽车基于加速度超前控制的最高车速限制方法


    Contributors:
    LIN YUMIN (author) / LI ZHONGLI (author)

    Publication date :

    2020-04-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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