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		Guizhi MENG,Kemao MA.[en_title][J].Control Theory and Technology,2012,10(4):533~538.[Copy]

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GuizhiMENG,KemaoMA
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(Control and Simulation Center, Harbin Institute of Technology; Department of Applied Mathematics, Harbin University of Science and Technology)

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Received:September 20, 2010Revised:June 30, 2011

基金项目:This work was supported by the National Natural Science Foundation of China (No. 60736022).

Global output feedback stabilization of upper-triangular nonlinear time-delay systems

Guizhi MENG,Kemao MA

(Control and Simulation Center, Harbin Institute of Technology; Department of Applied Mathematics, Harbin University of Science and Technology)

Abstract:

In this paper, the problem of global output feedback stabilization for a class of upper-triangular nonlinear systems with time-varying time-delay in the state is considered. The uncertain nonlinearities are assumed to be higher-order in the unmeasurable states. Based on the extended homogeneous domination approach, using a low gain observer in combination with controller, the delay-independent output feedback controller makes closed-loop system globally asymptotically stable under a homogeneous growth condition.

Key words: Upper-triangular nonlinear time-delay system Lyapunov-Krasovskii functionals Globally output feedback stabilization