作　　者： ; ; ;

机构地区： 湘潭大学信息工程学院控制工程研究所

出　　处： 《湘潭大学自然科学学报》 2010年第1期106-111,共6页

摘　　要： 为了解决负载转矩和转子电阻未知的感应电机控制问题,用反步法设计了一种L2鲁棒控制方案.其中,为了避免反步法带来"项的爆炸(explore of terms)"问题,引入了动态面控制(dynamic surface control)方法,即用低通滤波器过滤内环控制器的参考信号.根据感应电机转子磁链定向的模型中定子电压相互解耦的特点,在外环控制器中引入鲁棒项,抑制不确定参数对控制系统造成的影响.证明了系统具有小于等于正数γ的L2增益.仿真研究表明,用本文提出的控制方案比不用鲁棒控制项的控制系统跟踪精度更高,鲁棒性更好. In order to solve the problems of induction motor control with unknown load torque and rotor resistance, a L2 robust control scheme is proposed using backstepping. To avoid the problem of ＂explore of terms＂, the dynamic surface control method is introduced, in which adopt low pass filters to filter the refer- ence signals of inner loops. According to the decoupling characteristics of the stator voltages of induction motor rotor frame model which rotor along rotor＂ flux, the robust control terms are introduced to eliminate the influence of the uncertainties to induction motor. The characteristic that the control system has the L2 gain that is less than or equal to the positive value Yis proved. The simulation results indicate that the proposed control scheme has higher tracking precision and is more robustness than the one that has no robust terms.

关 键 词： 反步法 感应电机 鲁棒控制 负载转矩 转子电阻 动态面控制

领　　域： [自动化与计算机技术] [自动化与计算机技术]