Artículos de revistas
Delay-dependent robust H-infinity filter design for state-delayed discrete-time linear systems via homogeneous polynomial matrices
Registro en:
Iet Control Theory And Applications. Inst Engineering Technology-iet, v. 7, n. 1, n. 125, n. 135, 2013.
1751-8644
WOS:000318229100013
10.1049/iet-cta.2012.0682
Autor
Lacerda, MJ
Leite, VJS
Oliveira, RCLF
Peres, PLD
Institución
Resumen
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) This study presents new robust linear matrix inequality (LMI) conditions for robust H-infinity full-order filter design of discrete-time linear systems affected by time-invariant uncertainty and a time-varying state delay. Thanks to the use of a larger number of slack variables, the proposed robust LMI conditions contain and generalise other results from the literature. LMI relaxations based on homogeneous polynomial matrices of arbitrary degree are used to determine the state-space realisation of the full-order filter, that can also be implemented with delayed state terms whenever the time-delay is available in real time. As another contribution, an iterative LMI-based procedure involving the decision variables is proposed to improve the H-infinity filter performance. Numerical experiments illustrate the better performance of the proposed filter when compared to other approaches available in the literature. 7 1 125 135 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)