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dc.contributor.author
Garrido, Carlos Hernán

dc.contributor.author
Curadelli, Raul Oscar

dc.contributor.author
Ambrosini, Ricardo Daniel

dc.date.available
2021-07-27T13:16:59Z
dc.date.issued
2017-02
dc.identifier.citation
Garrido, Carlos Hernán; Curadelli, Raul Oscar; Ambrosini, Ricardo Daniel; A heuristic approach to output-only system identification under transient excitation; Pergamon-Elsevier Science Ltd; Expert Systems with Applications; 68; 2-2017; 11-20
dc.identifier.issn
0957-4174
dc.identifier.uri
http://hdl.handle.net/11336/137023
dc.description.abstract
Output-only system identification is a very attractive technique for its implementation simplicity. However, it requires long records to validate the white-noise assumption of the excitation, mainly under transient forced vibration. Alternatively, free-vibration record segments can be selected before the identification process. This improves the accuracy, even using less data, but it requires human intervention or input recording. In the present paper, an approach is proposed for accurate system identification from short output-only records of vibration induced by transient excitation, without human intervention. The approach is based on a novel heuristic search algorithm to find free-vibration record segments, which is fully automatic and it handles the possibility of free-vibration absence. Tests with real-life data from Structural Health Monitoring (SHM) of a bridge showed that the free-vibration finding improves the accuracy of the modal parameter estimates up to ten times, as compared to using record segments starting at the response peak. The proposed approach drastically reduces the need to transmit large amounts of data, which impacts on hardware requirements of SHM implementations.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd

dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BRIDGE
dc.subject
FREE VIBRATION
dc.subject
HEURISTIC SEARCH
dc.subject
OUTPUT-ONLY SYSTEM IDENTIFICATION
dc.subject
STOCHASTIC SYSTEM IDENTIFICATION
dc.subject
STRUCTURAL HEALTH MONITORING
dc.subject.classification
Ingeniería Estructural

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Ingeniería Civil

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INGENIERÍAS Y TECNOLOGÍAS

dc.subject.classification
Ciencias de la Computación

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Ciencias de la Computación e Información

dc.subject.classification
CIENCIAS NATURALES Y EXACTAS

dc.title
A heuristic approach to output-only system identification under transient excitation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-06-07T15:36:25Z
dc.journal.volume
68
dc.journal.pagination
11-20
dc.journal.pais
Estados Unidos

dc.description.fil
Fil: Garrido, Carlos Hernán. Universidad Nacional de Cuyo. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.description.fil
Fil: Curadelli, Raul Oscar. Universidad Nacional de Cuyo. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.description.fil
Fil: Ambrosini, Ricardo Daniel. Universidad Nacional de Cuyo. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; Argentina
dc.journal.title
Expert Systems with Applications

dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0957417416305383
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.eswa.2016.10.007
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