Unknown input observers for time-varying delay Takagi-Sugeno fuzzy systems with unmeasured nonlinear consequents

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dc.creatorMárcia Luciana da Costa Peixoto
dc.creatorAnh-Tu Nguyen
dc.creatorThierry-Marie Guerra
dc.creatorReinaldo Martinez Palhares
dc.date.accessioned2025-05-26T13:01:16Z
dc.date.accessioned2025-09-09T01:18:29Z
dc.date.available2025-05-26T13:01:16Z
dc.date.issued2023
dc.identifier.doihttps://doi.org/10.1016/j.ejcon.2023.100830
dc.identifier.issn0947-3580
dc.identifier.urihttps://hdl.handle.net/1843/82489
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofEuropean journal of control
dc.rightsAcesso Restrito
dc.subjectSistemas difusos
dc.subjectMatemática
dc.subject.otherTakagi–Sugeno fuzzy models
dc.subject.otherTime-varying delay
dc.subject.otherUnknown inputs
dc.subject.otherUnmeasured premise variables
dc.titleUnknown input observers for time-varying delay Takagi-Sugeno fuzzy systems with unmeasured nonlinear consequents
dc.typeArtigo de periódico
local.citation.spage100830
local.citation.volume72
local.description.resumoThis paper investigates the problem of unknown input observer (UIO) design for Takagi–Sugeno (TS) fuzzy systems with time-varying delay. For observer design, all the unmeasured nonlinearities are isolated in the nonlinear consequent parts of TS fuzzy systems. This allows dealing with the well-known issue related to unmeasured premise variables for TS fuzzy observer design in a more effective fashion via the mean value theorem. Using the unknown input (UI) decoupling technique, no a priori information on the UI is needed for the proposed TS fuzzy observer design, which can guarantee the asymptotic estimations of both the system state and the unknown input. Employing a fuzzy Lyapunov–Krasovskii functional with a suitable augmented vector, the effect of time-varying delay on the estimation error dynamics is taken into account in the observer design. Numerical examples are presented to demonstrate the effectiveness of the proposed fuzzy UIO design method for nonlinear time-varying delay systems.
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA ELETRÔNICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0947358023000596

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