SPC of multiple stream processes: a chart for enhanced detection of shifts in one stream

Detalhes bibliográficos
Autor(a) principal: Epprecht,Eugenio Kahn
Data de Publicação: 2011
Outros Autores: Barbosa,Laura França Marques, Simões,Bruno Francisco Teixeira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Production
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-65132011000200008
Resumo: The efficiency of Boyd's group charts -the classical scheme for the statistical control of multiple-stream processes- is impaired by its underlying model of the process not considering that part of the variation in such processes is common to all streams. Mortell and Runger (1995) and Runger, Alt and Montgomery (1996) proposed alternative schemes which take this fact into account. We propose a third scheme: a modified group chart, based on the differences between the values of the quality characteristic in each particular stream and the average of the values of all streams. The average run lengths of this scheme and of the competing schemes in the case of shifts in the mean of one individual stream are obtained either analytically or by simulation and compared. The results show the superiority of the proposed scheme except for shifts smaller than one standard deviation, against which no one of the schemes is really efficient.
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spelling SPC of multiple stream processes: a chart for enhanced detection of shifts in one streamMultiple stream processesGroup chartsStatistical process controlPerformance analysisARLThe efficiency of Boyd's group charts -the classical scheme for the statistical control of multiple-stream processes- is impaired by its underlying model of the process not considering that part of the variation in such processes is common to all streams. Mortell and Runger (1995) and Runger, Alt and Montgomery (1996) proposed alternative schemes which take this fact into account. We propose a third scheme: a modified group chart, based on the differences between the values of the quality characteristic in each particular stream and the average of the values of all streams. The average run lengths of this scheme and of the competing schemes in the case of shifts in the mean of one individual stream are obtained either analytically or by simulation and compared. The results show the superiority of the proposed scheme except for shifts smaller than one standard deviation, against which no one of the schemes is really efficient.Associação Brasileira de Engenharia de Produção2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-65132011000200008Production v.21 n.2 2011reponame:Productioninstname:Associação Brasileira de Engenharia de Produção (ABEPRO)instacron:ABEPRO10.1590/S0103-65132011005000022info:eu-repo/semantics/openAccessEpprecht,Eugenio KahnBarbosa,Laura França MarquesSimões,Bruno Francisco Teixeiraeng2011-07-01T00:00:00Zoai:scielo:S0103-65132011000200008Revistahttps://www.scielo.br/j/prod/https://old.scielo.br/oai/scielo-oai.php||production@editoracubo.com.br1980-54110103-6513opendoar:2011-07-01T00:00Production - Associação Brasileira de Engenharia de Produção (ABEPRO)false
dc.title.none.fl_str_mv SPC of multiple stream processes: a chart for enhanced detection of shifts in one stream
title SPC of multiple stream processes: a chart for enhanced detection of shifts in one stream
spellingShingle SPC of multiple stream processes: a chart for enhanced detection of shifts in one stream
Epprecht,Eugenio Kahn
Multiple stream processes
Group charts
Statistical process control
Performance analysis
ARL
title_short SPC of multiple stream processes: a chart for enhanced detection of shifts in one stream
title_full SPC of multiple stream processes: a chart for enhanced detection of shifts in one stream
title_fullStr SPC of multiple stream processes: a chart for enhanced detection of shifts in one stream
title_full_unstemmed SPC of multiple stream processes: a chart for enhanced detection of shifts in one stream
title_sort SPC of multiple stream processes: a chart for enhanced detection of shifts in one stream
author Epprecht,Eugenio Kahn
author_facet Epprecht,Eugenio Kahn
Barbosa,Laura França Marques
Simões,Bruno Francisco Teixeira
author_role author
author2 Barbosa,Laura França Marques
Simões,Bruno Francisco Teixeira
author2_role author
author
dc.contributor.author.fl_str_mv Epprecht,Eugenio Kahn
Barbosa,Laura França Marques
Simões,Bruno Francisco Teixeira
dc.subject.por.fl_str_mv Multiple stream processes
Group charts
Statistical process control
Performance analysis
ARL
topic Multiple stream processes
Group charts
Statistical process control
Performance analysis
ARL
description The efficiency of Boyd's group charts -the classical scheme for the statistical control of multiple-stream processes- is impaired by its underlying model of the process not considering that part of the variation in such processes is common to all streams. Mortell and Runger (1995) and Runger, Alt and Montgomery (1996) proposed alternative schemes which take this fact into account. We propose a third scheme: a modified group chart, based on the differences between the values of the quality characteristic in each particular stream and the average of the values of all streams. The average run lengths of this scheme and of the competing schemes in the case of shifts in the mean of one individual stream are obtained either analytically or by simulation and compared. The results show the superiority of the proposed scheme except for shifts smaller than one standard deviation, against which no one of the schemes is really efficient.
publishDate 2011
dc.date.none.fl_str_mv 2011-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-65132011000200008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-65132011000200008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-65132011005000022
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Engenharia de Produção
publisher.none.fl_str_mv Associação Brasileira de Engenharia de Produção
dc.source.none.fl_str_mv Production v.21 n.2 2011
reponame:Production
instname:Associação Brasileira de Engenharia de Produção (ABEPRO)
instacron:ABEPRO
instname_str Associação Brasileira de Engenharia de Produção (ABEPRO)
instacron_str ABEPRO
institution ABEPRO
reponame_str Production
collection Production
repository.name.fl_str_mv Production - Associação Brasileira de Engenharia de Produção (ABEPRO)
repository.mail.fl_str_mv ||production@editoracubo.com.br
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