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		Peng CUI,Chenghui ZHANG.[en_title][J].Control Theory and Technology,2008,6(2):177~183.[Copy]

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PengCUI,ChenghuiZHANG
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Received:February 10, 2006Revised:May 15, 2007

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Observer design and output feedback stabilization for linear singular time-delay systems with unknown inputs

Peng CUI, Chenghui ZHANG

(School of Control Science and Engineering, Shandong University, Jinan Shandong 250061, China)

Abstract:

The design of a functional observer and reduced-order observer with internal delay for linear singular timedelay systems with unknown inputs is discussed. The sufficient conditions of the existence of observers, which are normal linear time-delay systems, and the corresponding design steps are presented via linear matrix inequality(LMI). Moreover, the observer-based feedback stabilizing controller is obtained. Three examples are given to show the effectiveness of the proposed methods.

Key words: Singular time-delay systems Functional observer Reduced-order observer Output feedback stabilization Linear matrix inequality(LMI)