NOnlinearity detection and identification using discrete-time volterra series: Application to a solar array structure

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dc.contributor.authorHansen, Cristian [UNESP]
dc.contributor.authorDa Silva, Samuel [UNESP]
dc.contributor.authorFoltête, Emmanuel
dc.contributor.authorCogan, Scott
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversité de Franche-Comté, Institut FEMTO-ST, Département Mécanique Appliquée
dc.date.accessioned2018-12-11T16:58:38Z
dc.date.available2018-12-11T16:58:38Z
dc.date.issued2015-01-01
dc.description.abstractThe aim of this paper is to identify a nonlinear model using time responses obtained from a sine sweep excitation applied to a simplif ied solar array structure. The nonlinearity is mainly caused by impacts, gaps and friction between the clamped interfaces of adjacent panels. A nonparametric model is identif ied using Volterra series, where the kernels are expanded with Kautz functions in order to decrease the problems associated with convergence and number of samples. The multiple convolutions provided by the Volterra kernels are used to propose a decision criterion based on a threshold limit to detect the level of linear or nonlinear behavior. The approach is also able to separate the linear and nonlinear contributions of the measured total response. The application performed in the experimental setup demostrates that the proposed method is successful in identifying the main nonlinear mechanism involved, despite of the complicated nature of the nonlinear system investigated.en
dc.description.affiliationUNESP - Univ Estadual Paulista, Faculdade de Engenharia de Ilha Solteira, Departamento de Engenharia, Mecânica Av. Brasil 56
dc.description.affiliationUniversité de Franche-Comté, Institut FEMTO-ST, Département Mécanique Appliquée, 26, rue de l'Epitaphe
dc.description.affiliationUnespUNESP - Univ Estadual Paulista, Faculdade de Engenharia de Ilha Solteira, Departamento de Engenharia, Mecânica Av. Brasil 56
dc.format.extent3014-3028
dc.identifier.citationCOMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, p. 3014-3028.
dc.identifier.scopus2-s2.0-84942278811
dc.identifier.urihttp://hdl.handle.net/11449/172095
dc.language.isoeng
dc.relation.ispartofCOMPDYN 2015 - 5th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectNonlinear system identification
dc.subjectNonlinearity detection
dc.subjectPanel structures
dc.subjectVolterra series
dc.titleNOnlinearity detection and identification using discrete-time volterra series: Application to a solar array structureen
dc.typeTrabalho apresentado em evento

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Artigos - Engenharia Mecânica - FEIS