A Synthetic Control Chart for Monitoring Process Variability.

Autor:	Rajmanya, S. V., Ghute, V. B.
Předmět:	QUALITY control charts CHARTS diagrams etc. STATISTICAL process control INDUSTRIAL engineering AUTOMATIC control systems
Zdroj:	Quality & Reliability Engineering International; Dec2014, Vol. 30 Issue 8, p1301-1309, 9p
Abstrakt:	The control chart based on Downton's estimator ( D chart) has recently been introduced in the literature for monitoring the process variability. The D chart is found to be equally efficient to the S chart in terms of detecting shifts in process variability. In this paper, salient features of D chart and the conforming run length chart are combined to produce synthetic D chart. The average run length performance of the synthetic D chart is investigated using simulation study and is compared with the originally proposed D chart and some other procedures proposed in the literature. It is found that it has an improved performance in comparison with the traditional control charts for process variability. Copyright © 2013 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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