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http://dx.doi.org/10.5351/CKSS.2009.16.3.429

A Readjustment Procedure after Signalling in the Integrated Process Control  

Park, Chang-Soon (Department of Statistics, Chung-Ang University)
Lee, Jae-Heon (Department of Statistics, Chung-Ang University)
Publication Information
Communications for Statistical Applications and Methods / v.16, no.3, 2009 , pp. 429-436 More about this Journal
Abstract
This paper considers the integrated process control procedure for detecting special causes in an IMA(1,1) process that is being adjusted automatically after each observation using a minimum mean squared error adjustment policy. When the control chart signals after the occurrence of a special cause, the special cause will be detected and eliminated from the process by the rectifying action. However, when the elimination of the special cause costs high or is not practically possible, an alternative action is to readjust the process with appropriately modified adjustment scheme. In this paper, we propose the readjustment procedure after having a true signal, and show that the use of the readjustment can reduce the deviation of a process from the target.
Keywords
Integrated process control; process adjustment; readjustment; rectifying action;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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