中文摘要：

以磁浮开关磁阻电机轴向力为对象,研究了其转子稳定悬浮的控制.根据电磁场理论,建立了轴向悬浮力数学模型,针对悬浮力控制的非线性特点,采用基于离散时间趋近率的变结构控制方案,完成了电流、位移双环控制的轴向悬浮力控制器,实现了轴向悬浮力的稳定控制,分析了实现稳定跟踪的滑动模态的存在条件,并进行了仿真分析,仿真结果验证了该控制策略的有效性.

英文摘要：

The axial force mathematical model of magnetic suspending switched reluctance motor（SRM） is analyzed.At aim of the serious nonlinear characteristic of suspending force,the double closed loops-based axial suspending force controller is designed.The sliding model variable-structure control based on discrete-time reaching law is applied to fulfill an accurate displacement tracking control.The inner current closed-loop forces the actual winding current following the desired current.Simulations are carried out,and the results show that the rotor displacement can quickly follow the given displacement,which verifies the proposed method.Moreover,the control system presents stable performance,due to its avoiding partial linearization.