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The Effects of Imprecise Measurement on the Economic Asymmetric X and S Control Charts

The Effects of Imprecise Measurement on the Economic Asymmetric X and S Control Charts The presence of imprecise measurement may seriously affect the efficiency of process control and production cost. A cost model is derived to determine the design parameters of the economic asymmetric X and S control charts including measurement errots. The effects of imprecise measurement on the performance of the economic asymmetric X and S control charts and production cost are examined for the case where the process mean and process standard deviation may change. Application of the proposed control charts is demonstrated through an example. Numerical examples illustrate the effects of imprecise measurement on the design parameters of the proposed control charts. It shows that the imprecision measurement may seriously affect the ability of the proposed control charts to detect process disturbances quickly, change the sampling frequency, and increase the production cost compared to the control charts excluding measurement errors. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Asian Journal on Quality Emerald Publishing

The Effects of Imprecise Measurement on the Economic Asymmetric X and S Control Charts

Asian Journal on Quality , Volume 3 (2): 11 – Aug 21, 2002

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Publisher
Emerald Publishing
Copyright
Copyright © 2002 MCB UP Ltd. All rights reserved.
ISSN
1598-2688
DOI
10.1108/15982688200200018
Publisher site
See Article on Publisher Site

Abstract

The presence of imprecise measurement may seriously affect the efficiency of process control and production cost. A cost model is derived to determine the design parameters of the economic asymmetric X and S control charts including measurement errots. The effects of imprecise measurement on the performance of the economic asymmetric X and S control charts and production cost are examined for the case where the process mean and process standard deviation may change. Application of the proposed control charts is demonstrated through an example. Numerical examples illustrate the effects of imprecise measurement on the design parameters of the proposed control charts. It shows that the imprecision measurement may seriously affect the ability of the proposed control charts to detect process disturbances quickly, change the sampling frequency, and increase the production cost compared to the control charts excluding measurement errors.

Journal

Asian Journal on QualityEmerald Publishing

Published: Aug 21, 2002

Keywords: Asymmetric control charts; Measurement error; Renewal reward processes

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