摘要
为提高电动汽车的操纵稳定性,直驱轮毂电机需要快速和准确的速度调节,以响应车辆行驶状态需求。在建立电动汽车直驱轮毂电机数学模型的基础上,通过理论分析和系统需求,确定了电机速度环和电流环调节器的控制策略,结合直驱轮毂电机调速系统和线性二自由度电动汽车Matlab/Simulink的仿真模型,以恒速运行车辆在阶跃转向角输入为仿真条件,验证前后轮毂电机的速度控制性能。通过对理论计算和仿真结果的比较,证明前后轮速度控制准确、响应快速,能够满足系统需求,说明电机调速系统良好的跟随性和准确性。
On the basis of the mathematical model of direct driving wheel torque motor of electric vehicle, the system control strategy of speed loop and current loop controller is determined by theory analysis and actual demands. Combined the linear direct-drive wheel motor speed control system with two freedom model of electric vehicle by Matlab/Simulink, with step steering Angle input of constant speed running vehicles act as the simulation conditions, the front and rear wheel motor speed control performance is verified. By comparing theoretical calculation and the simulation results, the wheel motor speed is proved to control accurately with fast response, and the system meets the actual requirements. It shows that the motor speed regulating system has great tracking performance and accuracy.
出处
《北京信息科技大学学报（自然科学版）》
2013年第6期5-9,共5页
Journal of Beijing Information Science and Technology University
基金
国家自然科学基金资助项目(51275053)
关键词
电动汽车
直驱轮毂电机
调速系统
校正设计
PID算法改进
electric vehicle
direct drive of wheel hub motor
speed control system
correction design
PID algorithm improvement
