Abstract
A delay-dependent approach to robust H ∞ filtering is proposed for discrete-time singular systems with multiple time-varying delays and polytopic uncertainties. The delays are interval time-varying delays and uncertainties are a convex compact set of polytopic types. The aim of the designed filter is to guarantee regular, causal, asymptotic stability with H ∞ norm bound of filtering error singular systems. By establishing a finite sum inequality based on quadratic terms, a new delay-dependent bounded lemma (BL) for singular systems with interval time-varying delays is proposed. Based on the result, the existence condition of the robust H ∞ filter and the filter design method are presented in terms of linear matrix inequality (LMI). Finally, two examples are also given to illustrate the effectiveness of the proposed methodology.
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Recommended by Editorial Board member Duk-Sun Shim under the direction of Editor Young Il Lee.
Jong-Hae Kim received his B.S., M.S., and Ph.D. degrees in Electronics from Kyungpook National University, Korea, in 1993, 1995, and 1998, respectively. He was with STRC at Kyungpook National University from Nov. 1998 to Feb. 2002. He was a research fellow at Osaka University, Japan, for one year from March 2000. Also, he is a visiting scholar at the School of Electrical and Computer Engineering, Georgia Institute of Technology, USA, during the period of January 2010–March 2011. Now, he has been with Sun Moon University since March, 2002. His research interests focus on robust control, robust filtering, signal processing, and industrial application systems.
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Kim, JH. Delay-dependent approach to robust H ∞ filtering for discrete-time singular systems with multiple time-varying delays and polytopic uncertainties. Int. J. Control Autom. Syst. 8, 655–661 (2010). https://doi.org/10.1007/s12555-010-0319-0
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DOI: https://doi.org/10.1007/s12555-010-0319-0