摘要
以电动助力转向系统中直流助力电机的控制器为研究对象,依据助力电机的数学模型,应用带观测器补偿的滑模变结构控制方法,设计了滑模变控制器,通过调节助力电机的电压,获得预期的输出电流。仿真结果表明,所设计的滑模变控制器使助力电机具有很好的动态性能,系统基本无抖动现象,实现了助力电机输出电流对目标电流的跟踪特性。
In this paper, the mathematical model of control system of direct motor in EPS （ Electric Power Steering） is analyzed. Aiming at achieving the anticipated current, variable -structure control theory with sliding mode compensated by disturbance observation is employed to modulate the voltage of direct motor. The simulation results show this control system has good dynamic property and negligible vibration, and efficiently makes the output current of direct motor trace the intent current.
出处
《石家庄铁道学院学报》
2005年第4期70-73,共4页
Journal of Shijiazhuang Railway Institute
关键词
汽车
助力转向
滑模变结构控制:目标电流
the system of electric power steering
variable -structure control system with sliding mode
anticipated current
作者简介
刘丽丽,女,1978年出生,硕士研究生
