The invention relates to the field of automobile intelligent driving motion control algorithms, in particular to an electric automobile longitudinal acceleration closed-loop control method which comprises the following steps: step 1, acquiring current parameters of an automobile; 2, according to the expected acceleration at the current moment, the vehicle state parameters and the road state parameters, the expected feed-forward torque T1 of the motor is calculated; 3, calculating an acceleration error at the current moment, an acceleration error at the previous moment and an acceleration error change rate, and inputting the acceleration error at the current moment and the acceleration error change rate into a fuzzy controller to calculate a motor feedback torque T2; 4, calculating an accumulated value Sigma T2 of the expected feed-forward torque T1 and the motor feedback torque T2, and directly issuing the sum of the expected feed-forward torque T1 and the accumulated value Sigma T2 to the motor as a torque instruction; according to the method, the longitudinal acceleration of the vehicle is controlled by directly controlling the torque of the motor, and compared with a traditional fuel vehicle, the response is faster, and control is more accurate.

    本发明涉及汽车智能驾驶运动控制算法领域,具体涉及一种电动汽车纵向加速度闭环控制的方法,包括以下步骤:步骤一:获取车辆当前参数;步骤二:根据当前时刻的期望加速度、车辆状态参数、道路状态参数计算电机的期望前馈扭矩T1;步骤三:计算当前时刻的加速度误差、上一时刻的加速度误差以及加速度误差变化率,将当前时刻的加速度误差和加速度误差变化率输入模糊控制器计算出电机反馈扭矩T2;步骤四:计算期望前馈扭矩T1与电机反馈扭矩T2的累加值∑T2,并将期望前馈扭矩T1与累加值∑T2的和作为扭矩指令直接下发至电机;该方法通过直接控制电机的扭矩的方法来控制车辆的纵向加速度,相对于传统燃油车反应更加迅速,控制更加精准。


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    Title :

    Method for closed-loop control of longitudinal acceleration of electric vehicle


    Additional title:

    一种电动汽车纵向加速度闭环控制的方法


    Contributors:

    Publication date :

    2023-10-27


    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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