具有非线性输入的一类不确定混沌系统的控制  

Control for a class of uncertain chaotic systems with nonlinear input

作　　者：陈晶[1] 张天平[1] 钱厚斌[1] 

机构地区：[1]扬州大学信息工程学院计算机系,江苏扬州225009

出　　处：《系统工程与电子技术》2007年第2期269-272,共4页Systems Engineering and Electronics

基　　金：国家自然科学基金(60074013);江苏省教育厅指导性项目(KK0310067);扬州大学信息科学学科群(ISG030606)联合资助课题

摘　　要：研究了一类具有非线性输入的不确定混沌系统的跟踪控制问题。首先在系统状态已知,系统的非线性项及干扰项的界已知的情况下设计了理想滑模控制器,然后在系统只有一个状态可测,非线性项及干扰项的界未知的情况下,利用扩张观测器观测出系统的未知信息再设计控制器,从而实现了混沌系统的跟踪控制。最后对Duffing系统进行数值仿真,结果表明该控制方案是有效的。The tracking problem for a class of uncertain chaotic systems with input nonlinearity is considered. Firstly, a sliding mode controller is presented when all the states and the bounds of the uncertainty are known. Secondly, by assuming that the bounds of the uncertainty are not known and only one state is available for feedback, a extended state observer is used to estimate the unknown information. With the information, a sliding mode controller can be presented to control the chaotic systems. Finally, Numerical simulations are carried out to show the effectiveness of the design based on Duffing oscillator.

关 键 词：混沌系统 观测器 非线性控制 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]