Comparison of Multivariate Control Charts for Process Dispersion

Comparison of Multivariate Control Charts for Process Dispersion

In this article we compare four multivariate control charts for process dispersion in the retrospective analysis of a historical data set. Among the schemes compared, a new control chart based on a robust estimation of the variance-covariance matrix proved to be very effective in detecting changes i...

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Veröffentlicht in:Quality engineering 2007-07, Vol.19 (3), p.191-196
Hauptverfasser: Vargas, N. Jose Alberto, Lagos, C. Juliana
Format: Artikel
Sprache:eng
Schlagworte:
Comparative analysis
Control charts
isolated disturbances
Matrix
Multivariate analysis
multivariate process control
robust estimation
Studies
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Zusammenfassung:In this article we compare four multivariate control charts for process dispersion in the retrospective analysis of a historical data set. Among the schemes compared, a new control chart based on a robust estimation of the variance-covariance matrix proved to be very effective in detecting changes in the process dispersion matrix.
ISSN:0898-2112
1532-4222
DOI:10.1080/08982110701477012