Observer-based adaptive control for uncertain time-delay systems

Authors:
Changchun Hua;Fenglei Li;Xinping Guan
Affiliations:
Institute of Electrical Engineering, Yanshan University, Hebei, Qinghuangdao 066004, China;Institute of Electrical Engineering, Yanshan University, Hebei, Qinghuangdao 066004, China;Institute of Electrical Engineering, Yanshan University, Hebei, Qinghuangdao 066004, China
Venue:
Information Sciences: an International Journal
Year:
2006

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Abstract

In this paper, we will focus on investigating the observer-based controlling problem of time-delay systems. First, we investigate a class of simple time-delay systems. The corresponding adaptive observer and controller are designed, which are both independent of the time-delays. Based on Lyapunov stability theory, we prove that the closed-loop system is asymptotically stable. Next we further consider the interconnected time-delay system case. The corresponding adaptive observer and controller are designed, we prove that the resulting closed-loop system is also asymptotically stable. Simulations on controlling time-delay systems and interconnected systems are investigated, and the results show that the designed controllers are feasible and efficient.