A frequency domain blind identification method for operational modal analysis using a limited number of sensors
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
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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Repositório Institucional da UNESP |
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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 |