Fault detection and isolation using concatenated wavelet transform variances and discriminant analysis

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dc.contributor.authorGonzalez, GD
dc.contributor.authorPaut, R
dc.contributor.authorCipriano, A
dc.contributor.authorMiranda, DR
dc.contributor.authorCeballos, GE
dc.date.accessioned2024-01-10T13:13:04Z
dc.date.available2024-01-10T13:13:04Z
dc.date.issued2006
dc.description.abstractA method for fault detection and isolation is developed using the concatenated variances of the continuous wavelet transform (CWT) of plant outputs. These concatenated variances are projected onto the principal component space corresponding to the covariance matrix of the concatenated variances. Fisher and quadratic discriminant analyses are then performed in this space to classify the concatenated sample CWT variances of outputs in a given time window. The sample variance is a variance estimator obtained by taking the displacement average of the squared wavelet transforms of the current outputs. This method provides an alternative to the multimodel approach used for fault detection and identification, especially when system inputs are unmeasured stochastic processes, as is assumed in the case of the mechanical system example. The performance of the method is assessed using matrices having the percentage of correct condition identification in the diagonal and the percentages misclassified conditions in the off-diagonal elements. Considerable performance improvements may be obtained due to concatenation-when two or more outputs are available-and to discriminant analysis, as compared with other wavelet variance methods.
dc.fechaingreso.objetodigital2024-05-28
dc.format.extent10 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1109/TSP.2006.872608
dc.identifier.eissn1941-0476
dc.identifier.issn1053-587X
dc.identifier.urihttps://doi.org/10.1109/TSP.2006.872608
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78263
dc.identifier.wosidWOS:000237142100016
dc.information.autorucIngeniería;Cipriano A;S/I;99102
dc.issue.numero5
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final1736
dc.pagina.inicio1727
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.revistaIEEE TRANSACTIONS ON SIGNAL PROCESSING
dc.rightsacceso restringido
dc.subjectdiscriminant analysis
dc.subjectfault detection
dc.subjectfault isolation
dc.subjectwavelet transform
dc.subject.ods06 Clean Water and Sanitation
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleFault detection and isolation using concatenated wavelet transform variances and discriminant analysis
dc.typeartículo
dc.volumen54
sipa.codpersvinculados99102
sipa.indexWOS
sipa.trazabilidadCarga SIPA;09-01-2024
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