Attribute control charts for monitoring the covariance matrix of bivariate processes

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dc.contributor.authorMachado, M. A.G. [UNESP]
dc.contributor.authorHo, L. L.
dc.contributor.authorCosta, A. F.B. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2018-12-11T16:51:21Z
dc.date.available2018-12-11T16:51:21Z
dc.date.issued2018-03-01
dc.description.abstractIn this article, we consider the use of 3 attribute charts—the npxy, the npw and the Max D charts—to control the covariance matrix of bivariate processes. In comparison with the generalized variance |S| chart, the 3 attribute charts signal faster, with smaller samples, all kind of disturbances, except when the 2 variables are highly correlated. To compete with the VMAX chart, the Max D chart needs larger samples, but no more than twice bigger. An example illustrates the monitoring of the covariance matrix using the Max D and npw.en
dc.description.affiliationUNESP Department of Production Engineering
dc.description.affiliationUSP Department of Production Engineering
dc.description.affiliationUnespUNESP Department of Production Engineering
dc.format.extent257-264
dc.identifierhttp://dx.doi.org/10.1002/qre.2253
dc.identifier.citationQuality and Reliability Engineering International, v. 34, n. 2, p. 257-264, 2018.
dc.identifier.doi10.1002/qre.2253
dc.identifier.issn1099-1638
dc.identifier.issn0748-8017
dc.identifier.scopus2-s2.0-85040867787
dc.identifier.urihttp://hdl.handle.net/11449/170570
dc.language.isoeng
dc.relation.ispartofQuality and Reliability Engineering International
dc.relation.ispartofsjr0,955
dc.relation.ispartofsjr0,955
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAverage Run Length
dc.subjectdiscriminating limits
dc.subjectgeneralized variance
dc.subjectMax D
dc.subjectnpw
dc.subjectnpxy
dc.titleAttribute control charts for monitoring the covariance matrix of bivariate processesen
dc.typeArtigo
unesp.author.lattes6100382011052492[3]
unesp.author.orcid0000-0002-0621-6932[1]
unesp.author.orcid0000-0001-9984-8711[2]
unesp.author.orcid0000-0001-6620-4573[3]

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