Delay-dependent decentralized H∞ filtering for uncertain interconnected systems |
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Authors: | Chen Ning [Author Vitae]Author Vitae] Zhang Xiaofeng [Author Vitae] |
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Institution: | School of Information Science and Engineering, Central South Univ., Changsha 410083, P. R. China |
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Abstract: | This article considers delay dependent decentralized H∞ filtering for a class of uncertain interconnected systems, where the uncertainties are assumed to be time varying and satisfy the norm-bounded conditions. First, combining the Lyapunov-Krasovskii functional approach and the delay integral inequality of matrices, a suf-ficient condition of the existence of the robust decentralized H∞ filter is derived, which makes the error systems asymptotically stable and satisfies the H∞ norm of the transfer function from noise input to error output less than the specified up-bound on the basis of the form of uncertainties. Then, the above sufficient condition is transformed to a system of easily solvable LMIs via a series of equivalent transformation. Finally, the numerical simulation shows the efficiency of the main results. |
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Keywords: | interconnected systems H&infin filtering delay-dependent LMI |
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