摘要
针对纯电动汽车起步的关键问题即电机输出转矩控制,对纯电动汽车起步加速过程进行了动力学分析,依据加速踏板开度和开度变化率,运用模糊控制原理解析了驾驶员的起步意图,根据驾驶员意图和车辆实际运行情况制定了电机转矩的控制策略。在Matlab/Simulink中建立了其仿真模型,从冲击度、速度以及电机转矩输出值三个方面对纯电动汽车的起步性能进行了仿真分析。研究结果表明,该控制策略能够满足纯电动汽车的起步要求,既能满足一定的起步加速能力以及平顺性的要求,同时响应了驾驶员的起步意愿,具有一定的实际应用价值。
Aiming at the key problem in the process of pure electric vehicle starting,namely the torque output of motor,kinetic analysis was carried out. Based on the open degree of accelerator pedal and the change rate of it,the fuzzy control principle was used to analysis of driver＇s starting intention. Torque control strategies was developed on the basis of driver＇s starting intention as well as the actual situation of the vehicle. Simulation models were setted up in Matlab / Simulink. The starting performance of pure electric vehicle was analyzed from three aspects： the impact degree and the vehicle speed and torque output value. The results show that the control strategies meet the requirements of the start up of pure electric car well including of the ability to speed up,and the requirements of comfort also the intent of the driver,it has a certain practical value.
出处
《机电工程》
CAS
2015年第1期141-145,共5页
Journal of Mechanical & Electrical Engineering
基金
国家科技支撑计划资助项目(2014BAD08B00)
