On constructingT2control charts for on-line process monitoring
作者:
GUNABUSHANAM NEDUMARAN,
JOSEPHJ. PIGNATIELLO,
期刊:
IIE Transactions
(Taylor Available online 1999)
卷期:
Volume 31,
issue 6
页码: 529-536
ISSN:0740-817X
年代: 1999
DOI:10.1080/07408179908969856
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
In this paper we study the performance ofX2control limits onT2control charts during on-line process monitoring. We make recommendations on the minimum number of subgroups necessary for control charts based on estimated parameters to perform similar to control charts based on true parameters when theX2control limit is used. We discuss an exact procedure for constructingT2control charts using estimated parameters that perform similar to control charts based on true parameters regardless of the number of preliminary subgroups. Furthermore, we suggest an implementation approach for using Alt's control limit onT2control charts until the accumulation of recommended minimum number of subgroups.
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