The invention discloses a control method for reducing jittering of starting or rapid acceleration and rapid deceleration of a pure electric vehicle. The control method comprises the following steps: acquiring torque input information Tvcu of the whole vehicle; torque resonance elimination processing is carried out on the whole vehicle torque input information Tvcu, so that actual input torque information Tcmd of a motor is obtained; and performing torque slope processing on the actual input torque information Tcmd of the motor to obtain a final motor torque output value Te, and transmitting the final motor torque output value Te to an MTPA module. The torque instruction is processed through the technical scheme of the provided system transfer function, so that the vehicle body inherent frequency resonance point is changed, the problem of vehicle shaking caused by the fact that the motor torque is the same as the vehicle body inherent frequency is solved, the riding comfort of a user is improved, and the method is easy and effective to implement and low in cost. And the complicated transfer function calculation of the whole vehicle power transfer path is avoided.
本发明公开了一种降低纯电动车起步或者急加速急减速抖动的控制方法,包括:获取整车转矩输入信息Tvcu;将所述整车转矩输入信息Tvcu进行转矩共振消除处理,从而获取电机实际输入转矩信息Tcmd;将所述电机实际输入转矩信息Tcmd进行转矩斜率处理,从而获取最终电机转矩输出值Te,并将所述最终电机转矩输出值Te传递给MTPA模块。本发明通过所提出的系统传递函数的技术方案对转矩指令进行处理,从而改变了车身固有频率共振点,降低了因电机转矩与车身固有频率相同而导致的车辆抖动问题,提高用户的乘坐舒适性,且本发明实现简单有效,避免复杂的整车动力传递路径的传递函数计算。
Control method for reducing shaking of starting or rapid acceleration and rapid deceleration of pure electric vehicle
一种降低纯电动车起步或者急加速急减速抖动的控制方法
2022-11-11
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Europäisches Patentamt | 2016
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