开关磁阻电机混合模糊PI控制研究

Hybrid fuzzy PI speed controller for switched reluctance motor

为解决开关磁阻电机强非线性、多变量耦合、精确模型不易获得等问题,将传统模糊控制和PI控制技术综合应用到转速控制器的设计中。开展控制系统模型分析,建立控制量和被控对象之间的线性与非线性关系,提出了开关磁阻电机混合模糊PI控制方法;设计了基于Ansoft和Matlab-simulink的开关磁阻电机电力拖动系统仿真程序;研究了不同反馈误差情况下,混杂模糊控制器的控制行为和电机性能之间的关系,并对控制器镇定能力和电机动静态性能进行了评价,进行了实物验证试验。仿真和实验结果均表明,应用此种方法的开关磁阻电机调速系统动静态性能和鲁棒性都得到了有效提升。

In order to solve the problems of strongly nonlinear,multivariable coupling and complexities of the exact analytical model for the switched reluctance motor（ SRM）,the traditional fuzzy and PI control methods were investigated. After the analysis of system model,the linearly and nonlinearly relationship were established between the plant and controller. A method called hybrid fuzzy PI arithmetic was presented to design a speed controller. A simulation program of switched reluctance drive system（ SRD） based on Ansoft and Matlab-simulink was developed. The relationship between behavior of hybrid fuzzy PI controller and SRM performance was studied under different feedback error circumstances. The controller stabilization performance and SRM static / dynamic performance were evaluated at the same time. The physical verification experimental results indicate that both static / dynamic performance and robustness of SRD are improved.