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Type: Artigo de periódico
Title: H-infinity filtering for discrete-time linear systems with bounded time-varying parameters
Author: Borges, RA
Oliveira, RCLF
Abdallah, CT
Peres, PLD
Abstract: In this paper, the problem of linear parameter varying (LPV) filter design for time-varying discrete-time polytopic systems with bounded rates of variation is investigated. The design conditions are obtained by means of a parameter-dependent Lyapunov function and extra variables for the filter design, expressed as bilinear matrix inequalities. An LPV filter, which minimizes an upper bound to the H-infinity performance of the estimation error, is obtained as the solution of an optimization problem. A convex model to represent the parameters and their variations as a polytope is proposed in order to provide less conservative design conditions. Robust filters for time-varying polytopic systems can be obtained as a particular case of the proposed method. Numerical examples illustrate the results. (C) 2009 Elsevier B.V. All rights reserved.
Subject: Linear parameter varying systems
Bounded rates of variation
H-infinity filtering
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.sigpro.2009.06.024
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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