Improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)

Machine condition monitoring and diagnosis have become increasingly important. It is generally considered that larger numbers of sensors will supply useful information for diagnosis, although the number of sensors is limited in actual applications. In this study, therefore, a method of virtual measu...

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Autores principales:	Shozo KAWAMURA, Yuki TATE, Hirofumi MINAMOTO
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2014
Materias:	model-based diagnosis approach inverse analysis force identification virtual measurement modal analysis Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/0dcaaa8b893943279ef050b109a9bd7e
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spelling	oai:doaj.org-article:0dcaaa8b893943279ef050b109a9bd7e2021-11-26T06:04:01ZImprovement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)2187-974510.1299/mej.2014dr0007https://doaj.org/article/0dcaaa8b893943279ef050b109a9bd7e2014-04-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/1/2/1_2014dr0007/_pdf/-char/enhttps://doaj.org/toc/2187-9745Machine condition monitoring and diagnosis have become increasingly important. It is generally considered that larger numbers of sensors will supply useful information for diagnosis, although the number of sensors is limited in actual applications. In this study, therefore, a method of virtual measurement at many points of the structure, i.e., an approximation method of responses at non-measured points, is proposed, and the diagnostic accuracy is checked. To this end, two methods are proposed. A method is based on the modal analysis using the measured displacements, in which the displacement of the overall structure is approximated using natural vibration modes whose number is the same as that of sensors. The other method is also based on the modal analysis, though the displacements used for the approximation are modified by the displacement ratio between the actual measurement and the simulated one. The validity of each method is checked using the experimental data. From the results, it was recognized that the proposed method based on the displacement ratio is useful for virtual measurements.Shozo KAWAMURAYuki TATEHirofumi MINAMOTOThe Japan Society of Mechanical Engineersarticlemodel-based diagnosis approachinverse analysisforce identificationvirtual measurementmodal analysisMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 1, Iss 2, Pp DR0007-DR0007 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	model-based diagnosis approach inverse analysis force identification virtual measurement modal analysis Mechanical engineering and machinery TJ1-1570
spellingShingle	model-based diagnosis approach inverse analysis force identification virtual measurement modal analysis Mechanical engineering and machinery TJ1-1570 Shozo KAWAMURA Yuki TATE Hirofumi MINAMOTO Improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)
description	Machine condition monitoring and diagnosis have become increasingly important. It is generally considered that larger numbers of sensors will supply useful information for diagnosis, although the number of sensors is limited in actual applications. In this study, therefore, a method of virtual measurement at many points of the structure, i.e., an approximation method of responses at non-measured points, is proposed, and the diagnostic accuracy is checked. To this end, two methods are proposed. A method is based on the modal analysis using the measured displacements, in which the displacement of the overall structure is approximated using natural vibration modes whose number is the same as that of sensors. The other method is also based on the modal analysis, though the displacements used for the approximation are modified by the displacement ratio between the actual measurement and the simulated one. The validity of each method is checked using the experimental data. From the results, it was recognized that the proposed method based on the displacement ratio is useful for virtual measurements.
format	article
author	Shozo KAWAMURA Yuki TATE Hirofumi MINAMOTO
author_facet	Shozo KAWAMURA Yuki TATE Hirofumi MINAMOTO
author_sort	Shozo KAWAMURA
title	Improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)
title_short	Improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)
title_full	Improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)
title_fullStr	Improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)
title_full_unstemmed	Improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)
title_sort	improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (proposition of virtual measurement)
publisher	The Japan Society of Mechanical Engineers
publishDate	2014
url	https://doaj.org/article/0dcaaa8b893943279ef050b109a9bd7e
work_keys_str_mv	AT shozokawamura improvementofastepwiseprimarydiagnosismethodofabeamstructureusingaforceidentificationtechniquepropositionofvirtualmeasurement AT yukitate improvementofastepwiseprimarydiagnosismethodofabeamstructureusingaforceidentificationtechniquepropositionofvirtualmeasurement AT hirofumiminamoto improvementofastepwiseprimarydiagnosismethodofabeamstructureusingaforceidentificationtechniquepropositionofvirtualmeasurement
_version_	1718409761457700864

Improvement of a stepwise primary diagnosis method of a beam structure using a force identification technique (Proposition of virtual measurement)

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