The invention discloses a single-pedal control method, device and system of an electric automobile. The single-pedal control method comprises steps of receiving a pedal opening value, a pedal openingvalue change rate, a vehicle speed and a vehicle acceleration; determining a required torque according to the pedal opening value and the vehicle speed; determining a driving state of the vehicle according to the pedal opening value, the pedal opening value change rate, the vehicle speed and the vehicle acceleration, and determining a torque coefficient according to the driving state; and correcting the required torque through the torque coefficient to obtain an output torque. The single-pedal control method is advantaged in that two auxiliary input parameters, namely the pedal opening value change rate and the vehicle acceleration, are increased, redundancy of a control system is increased, the change rate of the pedal opening degree and the speed is considered, so the finally output torque is closer to the operation intention of a driver in a current vehicle driving state, and driving power performance of the electric vehicle is stable.
本发明公开了一种电动汽车的单踏板控制方法、装置及系统。单踏板控制方法,包括接收踏板开度值、踏板开度值变化率、车速以及车辆加速度;通过踏板开度值和车速确定需求扭矩;通过踏板开度值、踏板开度值变化率、车速以及车辆加速度确定车辆的行驶状态,根据行驶状态确定扭矩系数;通过扭矩系数修正所述需求扭矩,得到输出扭矩。本发明提出的单踏板控制方法通过增加踏板开度值变化率和车辆加速度两个辅助输入参量,增加控制系统的冗余量,由于考虑了踏板开度和速度的变化率,因此最终输出的扭矩更加贴近当前车辆行驶状态下驾驶员的操作意图,且电动汽车的驾驶动力性能稳定。
Single-pedal control method, device and system for electric automobile
一种电动汽车的单踏板控制方法、装置及系统
2020-05-05
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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