Robust Control Charts for Monitoring Process Mean of Phase-I Multivariate Individual Observations
Joint Authors
Vattathoor, Jayasankar
Variyath, Asokan Mulayath
Source
Journal of Quality and Reliability Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-06-09
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Engineering Sciences and Information Technology
Economics & Business Administration
Abstract EN
Hoteling's T2 control charts are widely used in industries to monitor multivariate processes.
The classical estimators, sample mean, and the sample covariance used in T2 control charts are highly sensitive to the outliers in the data.
In Phase-I monitoring, control limits are arrived at using historical data after identifying and removing the multivariate outliers.
We propose Hoteling's T2 control charts with high-breakdown robust estimators based on the reweighted minimum covariance determinant (RMCD) and the reweighted minimum volume ellipsoid (RMVE) to monitor multivariate observations in Phase-I data.
We assessed the performance of these robust control charts based on a large number of Monte Carlo simulations by considering different data scenarios and found that the proposed control charts have better performance compared to existing methods.
American Psychological Association (APA)
Variyath, Asokan Mulayath& Vattathoor, Jayasankar. 2013. Robust Control Charts for Monitoring Process Mean of Phase-I Multivariate Individual Observations. Journal of Quality and Reliability Engineering،Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-480088
Modern Language Association (MLA)
Variyath, Asokan Mulayath& Vattathoor, Jayasankar. Robust Control Charts for Monitoring Process Mean of Phase-I Multivariate Individual Observations. Journal of Quality and Reliability Engineering No. 2013 (2013), pp.1-14.
https://search.emarefa.net/detail/BIM-480088
American Medical Association (AMA)
Variyath, Asokan Mulayath& Vattathoor, Jayasankar. Robust Control Charts for Monitoring Process Mean of Phase-I Multivariate Individual Observations. Journal of Quality and Reliability Engineering. 2013. Vol. 2013, no. 2013, pp.1-14.
https://search.emarefa.net/detail/BIM-480088
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-480088