An Output-Feedback Design Approach for Robust Stabilization of Linear Systems With Uncertain Time-Delayed Dynamics in Sensors and Actuators

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dc.contributor.authorSereni, Bruno [UNESP]
dc.contributor.authorGalvao, Roberto Kawakami Harrop
dc.contributor.authorAssuncao, Edvaldo [UNESP]
dc.contributor.authorTeixeira, Marcelo Carvalho Minhoto [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionInstituto Tecnológico de Aeronáutica (ITA)
dc.date.accessioned2023-07-29T16:07:42Z
dc.date.available2023-07-29T16:07:42Z
dc.date.issued2023-01-01
dc.description.abstractIn this paper, we propose a control approach for the robust stabilization of linear time-invariant (LTI) systems with non-negligible sensor and actuator dynamics subject to time-delayed signals. Our proposition is based on obtaining an augmented model that encompasses the plant, sensor, and actuator dynamics and also the time-delay dynamic effect. We make use of the Padé Approximation for modeling the time-delay impact on the feedback loop. Since the actual plant state variables are not available for feedback, the sensor outputs, which represent a subset of the augmented system state variables, are used for composing a static output-feedback control law. The robust controller gains are computed by means of a two-stage strategy based on linear matrix inequalities (LMI). For obtaining less conservative conditions we consider the use of homogeneous-polynomial Lyapunov functions (HPLF)- and other decision variables- of arbitrary degree. In our proposition, we also take into account the inclusion of a minimum decay rate criterion in order to improve closed-loop system transient response. Disturbance rejection is also addressed through extensions to H2 guaranteed cost minimization. The effectiveness of the proposed strategy is attested in the design of a controller for the lateral axis dynamics of an aircraft and other academic examples.en
dc.description.affiliationSão Paulo State University (UNESP) Campus Ilha Solteira School of Engineering, Ilha Solteira
dc.description.affiliationSão José Dos Campos Divisão de Engenharia Eletrônica Instituto Tecnológico de Aeronáutica (ITA)
dc.description.affiliationUnespSão Paulo State University (UNESP) Campus Ilha Solteira School of Engineering, Ilha Solteira
dc.format.extent20769-20785
dc.identifierhttp://dx.doi.org/10.1109/ACCESS.2023.3249482
dc.identifier.citationIEEE Access, v. 11, p. 20769-20785.
dc.identifier.doi10.1109/ACCESS.2023.3249482
dc.identifier.issn2169-3536
dc.identifier.scopus2-s2.0-85149384788
dc.identifier.urihttp://hdl.handle.net/11449/249732
dc.language.isoeng
dc.relation.ispartofIEEE Access
dc.sourceScopus
dc.subjectlinear matrix inequalities
dc.subjectlinear time-invariant systems
dc.subjectRobust control
dc.subjectstatic output feedback
dc.subjecttime-delay
dc.titleAn Output-Feedback Design Approach for Robust Stabilization of Linear Systems With Uncertain Time-Delayed Dynamics in Sensors and Actuatorsen
dc.typeArtigo
unesp.author.orcid0000-0002-4527-4924[1]
unesp.author.orcid0000-0001-9794-8815[2]
unesp.author.orcid0000-0002-2996-2831[4]
unesp.departmentEngenharia Elétrica - FEISpt

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Ilha Solteira - FEIS - Faculdade de Engenharia