不确定非线性光电伺服系统滑模自适应控制  

Adaptive SMC for nonlinear optoelectronic servo system with uncertainty

作　　者：王红红[1] 陈方斌[1] 江涛[1] 李广良[1] 

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《应用光学》2009年第2期242-245,共4页Journal of Applied Optics

摘　　要：针对同时存在参数不确定性和结构不确定性的非线性光电伺服系统,运用自适应原理对系统的参数进行在线估计,同时提出一种改进的指数趋近律,并结合滑模控制(变结构控制)策略设计系统的滑模自适应位置控制器(APR)。以等效正弦1.2sin(0.93t)作为仿真输入,在0.45s后跟踪误差小于60μrad,表明该控制方法对此类不确定非线性系统的控制效果良好。An improved exponential approach method and the system parameter online estimation based on the adaptive theory were implemented in a nonlinear optoelectronic servo system with parameter and structure uncertainties. SMC is applied to the design of APR in the system. Taking the equivalent 1.2sin（0.93t） as the simulation input, the tracking error is less than 60μrad after 0. 45 s. The simulation indicates the control method for such uncertain nonlinear system is effective.

关 键 词：不确定性 非线性 光电伺服系统 自适应 滑模控制 

分 类 号：TN929.11[电子电信—通信与信息系统]