开关磁阻电机模糊滑模转速控制

针对开关磁阻电机严重的非线性和数学模型不精确等缺点,提出了一种模糊滑模变结构控制策略。将速度差作为开关函数,相电流平方和作为控制对象,在常规滑模控制器设计中引入模糊控制,建立模糊滑模控制的数学模型,并给出系统的结构框图。通过仿真,分析开关磁阻电机在模糊滑模控制下的各种特性。实验结果证明模糊滑模控制方法有良好的动态性能,较强的鲁棒性,在不清楚电机精确模型的情况下可有效克服转矩脉动。

Speed Control of Switched Reluctance Motors through Fuzzy Sliding Mode Control

In view of very poor nonlinearity and inaccurate mathematical model of switched reluctance motors （SRM）,a fuzzy sliding mode control is proposed.Using speed difference as switching function and quadratic sum of phase current as controlled object,this method introduces fuzzy control into the normal sliding mode controller to establish a mathematical model of fussy sliding mode control and present a structural diagram of the system.Various characteristics of SRM under fussy sliding mode control are analyzed through simulation.Experimental results show that the fuzzy sliding mode control with an excellent dynamic performance and good robustness can overcome torque ripple of the motor when the accurate model of the motor is unknown.