永磁直线伺服系统的l_1速度控制器设计  

Design of l_1 Speed Controller for Permanent Magnet Linear Servo Systems

作　　者：孙宜标[1] 孙晓雨[1] 董婷[1] 夏加宽[1] 

机构地区：[1]沈阳工业大学电气工程学院,沈阳110178

出　　处：《组合机床与自动化加工技术》2008年第10期48-51,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金项目(50375102);辽宁省自然科学基金项目(20052045)

摘　　要：永磁直线伺服系统具有高速、高响应和直接驱动等优点,但负载扰动及系统参数变化会降低系统的伺服性能,为了削弱上述不确定性因素的影响,采用l1控制方法设计速度控制器。基于直线电机离散模型,利用youla参数化法将l1速度控制器设计转化为匹配模型最优控制器Q的设计。从给定的控制器阶数出发,将无限维的l1问题转化为有限维的线性规划问题。仿真结果表明,该控制策略不仅具有良好的快速跟踪性能,而且对系统参数变化和外部扰动具有很强的鲁棒性。Permanent magnet linear servo system has the merits of high speed, high response, and direct drive, but the load disturbance and the change of system parameters reduce the serVo performance of the system. To weaken the influence of the uncertainties mentioned above, l1 control method is adopted to design speed controller. Based on the discrete time model of PMLSM, the design of l1 speed controller is changed into the design of optimal controller Q of matching model using youla parameter. From the given controller＇s order, the problem of infinite dimension v is translated into finite dimension linear programs. The simulation results show that this control scheme can not only enhance the track-command-ability, but also has strong robustness to parameters perturbation and outer disturbances.

关 键 词：永磁直线伺服系统 l1控制 给定阶控制器 匹配模型 

分 类 号：TM921.47[电气工程—电力电子与电力传动] TP273[自动化与计算机技术—检测技术与自动化装置]