The invention discloses a torque control method for an electric vehicle. The torque control method comprises the following steps of: S1, obtaining the opening degree R of a rotating handle, a voltagevector US and a bus current IDC through sampling; S2, according to the opening degree R of the rotating handle, calculating a rotating handle torque instruction IS-REF1 through a motor torque externalcharacteristic curve equation; S3, performing calculating according to the bus current IDC to obtain a current torque instruction IS-REF2; S4, performing calculating according to the voltage vector US to obtain a speed torque instruction IS-REF3; and S5, taking the handlebar torque instruction IS-REF1 obtained in the step S2 as main torque output, taking the current torque instruction IS-REF2 obtained in the step S3 and the speed torque instruction IS-REF3 obtained in the step S4 as limiting quantities, and performing calculating to obtain a target torque instruction IS-REF, wherein the calculation formula of the target torque instruction IS-REF is as follows: the target torque instruction IS-REF=Min[IS-MAX, IS-REF1, IS-REF2, IS-REF3,...].

    本发明公开了一种电动车转矩控制方法,包括以下步骤:S1、通过采样获取转把开度R、电压矢量U和母线电流I;S2、根据转把开度R,由电机转矩外特性曲线方程计算出转把转矩指令I;S3、根据母线电流I计算得到电流转矩指令I;S4、根据电压矢量U计算得到速度转矩指令I,S5、以步骤S2得到的转把转矩指令I作为主转矩输出,步骤S3得到的电流转矩指令I和步骤S4得到的速度转矩指令I作为限制量对主转矩输出进行修正,计算得到目标转矩指令I,其计算公式为:目标转矩指令I=Min[I,I,I,I,…]。


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    Title :

    Torque control method for electric vehicle


    Additional title:

    一种电动车转矩控制方法


    Contributors:
    CHEN QINGFU (author) / JIAN RUIQIAN (author) / ZHOU LESHUAN (author) / YU XIAOBO (author)

    Publication date :

    2020-08-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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