Statistical monitoring of a process with autocorrlated output and observable autocorrelated measurement error.

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dc.contributor.advisor Seaman, John Weldon, 1956-
dc.contributor.advisor Tubbs, Jack Dale. Cuéllar Fuentes, Jesús.
dc.contributor.other Baylor University. Dept. of Statistical Sciences. en 2008-05
dc.description.abstract Our objective in this work is to monitor a production process yielding output that is correlated and contaminated with autocorrelated measurement error. Often, the elimination of the causes of the autocorrelation of the measurement error and the reduction of the measurement error to a negligible level is not feasible because of regulatory restrictions, technological limitations, or the expense of requisite modifications. In this process, reference material is measured to verify the performance of the measurement process, before the product material is measured. We propose the use of a transfer function to account for measurement error in the product measurements. We obtain the base production signal and use a modified version of the common cause (CC) chart and the special cause control (SCC) chart, originally proposed by Roberts and Alwan (1988), to monitor the base production process. We incorporate control limits in the CC chart as suggested by Alwan (1991) and Montgomery and Mastrangelo (1991) and add MR-chart to the original SCC chart. The common cause control (CCC) chart and SCC charts comprise a flexible monitoring scheme capable of detecting not only changes in the process mean, but also shifts in the mean and the variance of the random shocks that generate the base process. en
dc.rights Baylor University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Contact for inquiries about permission. en
dc.subject Process control -- Statistical methods. en
dc.subject Quality control -- Statistical methods. en
dc.subject Autocorrelation (Statistics) en
dc.title Statistical monitoring of a process with autocorrlated output and observable autocorrelated measurement error. en
dc.type Thesis en Ph.D. en
dc.rights.accessrights Worldwide access. en
dc.rights.accessrights Access changed 5/24/11.
dc.contributor.department Statistical Sciences. en

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