A frequency domain blind identification method for operational modal analysis using a limited number of sensors

Detalhes bibliográficos
Autor(a) principal: Li, Xinhui
Data de Publicação: 2020
Outros Autores: Antoni, Jerome, Brennan, Michael J. [UNESP], Yang, Tiejun, Liu, Zhigang
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1177/1077546319897218
http://hdl.handle.net/11449/195140
Resumo: Operational modal analysis is an experimental modal analysis approach, which uses vibration data collected when the structure is under operating conditions. Amongst the methods for operational modal analysis, blind source separation-based methods have been shown to be efficient and powerful. The existing blind source separation modal identification methods, however, require the number of sensors to be at least equal to the number of modes in the frequency range of interest to avoid spatial aliasing. In this article, a frequency domain algorithm that overcomes this problem is proposed, which is based on the joint diagonalization of a set of weighted covariance matrices. In the proposed approach, the frequency range of interest is partitioned into several frequency ranges in which the number of active modes in each band is less than the number of sensors. Numerical simulations and an experimental example demonstrate the efficacy of the method.
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spelling A frequency domain blind identification method for operational modal analysis using a limited number of sensorsOperational modal analysissecond-order blind identificationblind source separationindependent component analysisblind modal identificationOperational modal analysis is an experimental modal analysis approach, which uses vibration data collected when the structure is under operating conditions. Amongst the methods for operational modal analysis, blind source separation-based methods have been shown to be efficient and powerful. The existing blind source separation modal identification methods, however, require the number of sensors to be at least equal to the number of modes in the frequency range of interest to avoid spatial aliasing. In this article, a frequency domain algorithm that overcomes this problem is proposed, which is based on the joint diagonalization of a set of weighted covariance matrices. In the proposed approach, the frequency range of interest is partitioned into several frequency ranges in which the number of active modes in each band is less than the number of sensors. Numerical simulations and an experimental example demonstrate the efficacy of the method.Harbin Engn Univ, Harbin, Peoples R ChinaUniv Lyon, INSA Lyon, Lyon, FranceUniv Estadual Paulista, Sao Paulo, BrazilUniv Estadual Paulista, Sao Paulo, BrazilSage Publications LtdHarbin Engn UnivUniv LyonUniversidade Estadual Paulista (Unesp)Li, XinhuiAntoni, JeromeBrennan, Michael J. [UNESP]Yang, TiejunLiu, Zhigang2020-12-10T17:06:00Z2020-12-10T17:06:00Z2020-01-14info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1383-1398http://dx.doi.org/10.1177/1077546319897218Journal Of Vibration And Control. London: Sage Publications Ltd, v. 26, n. 17-18, p. 1383-1398, 2020.1077-5463http://hdl.handle.net/11449/19514010.1177/1077546319897218WOS:000507744400001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Vibration And Controlinfo:eu-repo/semantics/openAccess2021-10-22T20:04:12Zoai:repositorio.unesp.br:11449/195140Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:39:55.417409Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv A frequency domain blind identification method for operational modal analysis using a limited number of sensors
title A frequency domain blind identification method for operational modal analysis using a limited number of sensors
spellingShingle A frequency domain blind identification method for operational modal analysis using a limited number of sensors
Li, Xinhui
Operational modal analysis
second-order blind identification
blind source separation
independent component analysis
blind modal identification
title_short A frequency domain blind identification method for operational modal analysis using a limited number of sensors
title_full A frequency domain blind identification method for operational modal analysis using a limited number of sensors
title_fullStr A frequency domain blind identification method for operational modal analysis using a limited number of sensors
title_full_unstemmed A frequency domain blind identification method for operational modal analysis using a limited number of sensors
title_sort A frequency domain blind identification method for operational modal analysis using a limited number of sensors
author Li, Xinhui
author_facet Li, Xinhui
Antoni, Jerome
Brennan, Michael J. [UNESP]
Yang, Tiejun
Liu, Zhigang
author_role author
author2 Antoni, Jerome
Brennan, Michael J. [UNESP]
Yang, Tiejun
Liu, Zhigang
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Harbin Engn Univ
Univ Lyon
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Li, Xinhui
Antoni, Jerome
Brennan, Michael J. [UNESP]
Yang, Tiejun
Liu, Zhigang
dc.subject.por.fl_str_mv Operational modal analysis
second-order blind identification
blind source separation
independent component analysis
blind modal identification
topic Operational modal analysis
second-order blind identification
blind source separation
independent component analysis
blind modal identification
description Operational modal analysis is an experimental modal analysis approach, which uses vibration data collected when the structure is under operating conditions. Amongst the methods for operational modal analysis, blind source separation-based methods have been shown to be efficient and powerful. The existing blind source separation modal identification methods, however, require the number of sensors to be at least equal to the number of modes in the frequency range of interest to avoid spatial aliasing. In this article, a frequency domain algorithm that overcomes this problem is proposed, which is based on the joint diagonalization of a set of weighted covariance matrices. In the proposed approach, the frequency range of interest is partitioned into several frequency ranges in which the number of active modes in each band is less than the number of sensors. Numerical simulations and an experimental example demonstrate the efficacy of the method.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-10T17:06:00Z
2020-12-10T17:06:00Z
2020-01-14
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1177/1077546319897218
Journal Of Vibration And Control. London: Sage Publications Ltd, v. 26, n. 17-18, p. 1383-1398, 2020.
1077-5463
http://hdl.handle.net/11449/195140
10.1177/1077546319897218
WOS:000507744400001
url http://dx.doi.org/10.1177/1077546319897218
http://hdl.handle.net/11449/195140
identifier_str_mv Journal Of Vibration And Control. London: Sage Publications Ltd, v. 26, n. 17-18, p. 1383-1398, 2020.
1077-5463
10.1177/1077546319897218
WOS:000507744400001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal Of Vibration And Control
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1383-1398
dc.publisher.none.fl_str_mv Sage Publications Ltd
publisher.none.fl_str_mv Sage Publications Ltd
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128261832572928