无刷直流电动机伺服系统的容错性能  

The Characteristic of a Brushless DC Motor Servo System

作　　者：董慧芬[1] 周元钧[1] 顾福深 

机构地区：[1]北京航空航天大学,北京100083 [2]天津普辰电子工程有限公司,天津300384

出　　处：《微特电机》2005年第10期12-15,18,共5页Small & Special Electrical Machines

基　　金：航空科学基金资助(01F51016)

摘　　要：应用于下一代多电飞机电伺服系统的双通道永磁无刷直流电动机控制系统,双通道绕组间存在互感的影响,使得系统参数变化具有不确定性,同时舵面负载的动态特性使负载扰动有很大的随机性。根据系统这一特点,采用三闭环模糊滑模控制策略,外环为速度和位置闭环,内环为电流闭环的方法设计控制器,并进行了仿真实验研究。结果表明该方案对系统参数变化和负载扰动具有很强的鲁棒性,在容错运行模式下,经过控制参数容错重组后,没有稳态误差,系统动态特性有所下降,满足容错控制性能要求。A brushless DC motor servo system with two control channels is presented in this paper. It will be used in an electro - mechanical actuation （EMA） of the next generation aircraft. There is mutual inductance between the dual -channel, then the parameters are changed indefinitely, the rudder load is dynamic and the load disturbance is random. According to all of these characteristics of the system, a three - loop fuzzy sliding control mode is adopted, the speed and position loop are outer loop, and the current loop is inner loop. The simulation results show that the proposed control scheme has strong robustness to parameter variations and external disturbances, and after the parameters fault -tolerance rebuilding the system has no steady err in fault- tolerant operation mode, and the dynamic characteristic of the system is degraded but meets the fault - tolerance control requirements.

关 键 词：双通道永磁无刷直流电动机 伺服系统 模糊-滑模变结构控制 容错运行模式 

分 类 号：TM343[电气工程—电机]