Thursday, 3 December 2009

Wseas Transactions

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Transactions: WSEAS TRANSACTIONS ON MATHEMATICS
Transactions ID Number: 42-230
Full Name: Kreangkri Ratchagit
Position: Doctor (Researcher)
Age: ON
Sex: Male
Address: 1Department of Mathematics, Faculty of Science, Maejo University, Chiang Mai 50290, Thailand
Country: THAILAND
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E-mail address: kreangkri@mju.ac.th
Other E-mails: kreangkri2524@hotmail.com
Title of the Paper: Improved stability criterion in delayed controller design for discrete-time systems
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Number of paper pages: 11
Abstract: This paper is concerned with the problem of delay-dependent stability analysis for discrete-time systems with interval-like time-varying delays and the problem of stabilization for discrete-time linear systems via time-delayed controllers. The first problem is solved by applying a novel Lyapunov functional, and an improved delay-dependent stability criterion is obtained in terms of a linear matrix inequality. Based on this, a sufficient condition for the solvability of the second problem is presented. The reduced conservatism of the proposed stability result is shown through a numerical example.
Keywords: Delay-dependent stability; Discrete-time systems; Stabilization; Time-varying delays, Time-delayed controllers.
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