Enhanced quality evaluation system for continuous manufacturing processes, part 1. Theory

K. J. Dooley, S. G. Kapoor

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

A quality evaluation system is presented which gives enhanced information about the nature of quality changes in continuous manufacturing processes. The system monitors a quality characteristic of the process via stochastic time series models and detects shifts in the process mean, variance, and dynamic parameters. A rule base classifies the type of change that occurred, and change magnitude and time of occurrence are estimated. Part 1 of the work addresses the theoretical issues concerning the statistics used by the rule base and their behavior under various process changes. The characteristics of the cusum chart, autocorrelation chart, and Chi-Square test are derived with respect to each of the possible change mechanisms.

Original languageEnglish (US)
Pages (from-to)57-62
Number of pages6
JournalJournal of engineering for industry
Volume112
Issue number1
DOIs
StatePublished - Jan 1 1990
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)

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