Robust adaptive control for interval time-delay systems  

作　　者：Yizhong WANG Huaguang ZHANG Jun YANG 

机构地区：[1]School of Information Science and Engineering, Northeastern University, Shenyang Liaoning 110004, China [2]Department of Basic Courses, Shandong University of Science and Technology, Tai＇an Shandong 271019, China

出　　处：《控制理论与应用（英文版）》2006年第4期367-371,共5页

基　　金：This work was supported by the National Natural Science Foundation of China (No. 60325311, 60274017).

摘　　要：This paper focuses on the robust adaptive control problems for a class of interval time-delay systems and a class of large-scale interconnected systems. The nonlinear uncertainties of the systems under study are bounded by high- order polynomial functions with unknown gains. Firstly, the adaptive feedback controller which can guarantee the stability of the closed-loop system in the sense of uniform ultimate boundedness is proposed. Then the proposed adaptive idea is extended to robust stabilizing designing method for a class of large-scale interconnected systems. Here, another problem we address is to design a decentralized feedback adaptive controller such that the closed-loop system is stable in the sense of uniform ultimate boundedness for all admissible uncertainties and time-delay. Finally, an illustrative example is given to show the validity of the proposed approach.This paper focuses on the robust adaptive control problems for a class of interval time-delay systems and a class of large-scale interconnected systems. The nonlinear uncertainties of the systems under study are bounded by high- order polynomial functions with unknown gains. Firstly, the adaptive feedback controller which can guarantee the stability of the closed-loop system in the sense of uniform ultimate boundedness is proposed. Then the proposed adaptive idea is extended to robust stabilizing designing method for a class of large-scale interconnected systems. Here, another problem we address is to design a decentralized feedback adaptive controller such that the closed-loop system is stable in the sense of uniform ultimate boundedness for all admissible uncertainties and time-delay. Finally, an illustrative example is given to show the validity of the proposed approach.

关 键 词：Adaptive control TIME-DELAY Interconnected systems Uniformly ultimately bounded 

分 类 号：O23[理学—运筹学与控制论]