二阶动态滑模控制在磁悬浮控制系统中的应用  

Application of Second Order Dynamic Sliding Mode Controlling in Magnetic Levitation Control System

作　　者：郝婷[1] 周一航[1] 张辉[1] 

机构地区：[1]中国电子科技集团第二十八研究所,江苏210007

出　　处：《网络安全技术与应用》2013年第8期47-49,共3页Network Security Technology & Application

摘　　要：磁悬浮是典型的非线性、不稳定系统。为了实现其控制,本文采用了一种结合二阶滑模和动态滑模两种设计思想的二阶动态滑模控制器的设计方法,首先推导了磁悬浮系统的线性化状态空间模型;然后针对被控对象设计了二阶动态滑模控制器;最后与普通滑模控制器进行对比仿真试验。仿真结果表明,所设计的二阶动态滑模控制器在使小球快速稳定到达平衡点的同时,大大削弱了普通滑模控制器中存在的严重抖振现象。Magnetic levitation system is characterized by its nonlinearity, instabihty.In this paper, a second order dynamic sliding mode controller is designed in order to control the plant.Firstly,a linear state space model is developed for the magnetic levitation system;then a second order dynamic sliding mode controller is induced for the control plant;finally,with contrast to the control effect between the popular sliding mode controller and the second order dynamic sliding mode controller from the simulation result ,the second order dynamic sliding mode controller not only can make the ball stabilize to the equilibrium point quickly, but also can greatly weaken the system chattering.

关 键 词：磁悬浮 二阶动态滑模 系统研究抖振削弱 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]