The invention relates to a pure electric vehicle driving control strategy optimization method based on mathematical modeling. The method comprises the steps that a driving intention analysis model calculates an opening value and an opening change rate of an accelerator pedal according to accelerator pedal sensor data; the driving mode analysis model selects a corresponding power driving mode according to the collected data; the torque calculation model calculates required motor torque, judges whether the power driving mode is converted and whether the required motor torque is greater than a threshold value or not, and sequentially divides the required motor torque into a plurality of point values from small to large if so and sequentially outputs the point values to the instruction generation model; and the instruction generation model sequentially sends corresponding torque instructions to the motor controller according to the point values. The torque sudden change caused by power driving mode conversion is effectively weakened, so that the smoothness of the vehicle is improved, better driving experience is brought to a driver, and meanwhile, the service life of the motor is prolonged.
本发明涉及一种基于数学建模的纯电动汽车驱动控制策略优化方法,包括步骤:驾驶意图分析模型根据加速踏板传感器数据计算加速踏板的开度值以及开度变化率;驱动模式分析模型根据采集的数据选择对应的动力驱动模式;转矩计算模型计算需求电机转矩,并且判断动力驱动模式是否发生转换以及需求电机转矩是否大于阈值,若是,则对需求电机转矩进行顺序划分,将需求电机转矩划分成若干个由小至大的点值并依次输出至指令生成模型;指令生成模型根据点值依次向电机控制器发送对应的转矩指令。本发明有效削弱了动力驱动模式转换而引起的转矩突变,从而提高了车辆的平顺性,给驾驶员带来更好的驾驶体验的同时,有利于延长电机的寿命。
Pure electric vehicle driving control strategy optimization method based on mathematical modeling
一种基于数学建模的纯电动汽车驱动控制策略优化方法
2021-02-09
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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