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Journal of the Korean Society for Quality Management > Volume 27(1); 1999 > Article
Journal of the Korean Society for Quality Management 1999;27(1): 35-.
상관변수를 이용한 공정 감시 절차
권혁무1, 이민구2, 김상부3, 홍성훈4
1부경대학교 산업시스템 안전공학부
2서원대학교 경영학과
3창원대학교 산업공학과
4전북대학교 산업공학과
A Process Monitoring Procedure Using a Correlated Variable
ABSTRACT
A process monitoring procedure using a correlated variable is presented when a lower specification limit is given on the performance variable. Every item is inspected with a variable correlated with the performance variable. When an item is rejected in the screening inspection, the process is checked for change using the mean and variance of measurements of the correlated variable for n preceding items including the rejected one. The performance variable is assumed to be normally distributed. A linear relationship between the performance and surrogate variables is assumed with normally distributed error term. The monitoring procedure is designed so that the prespecified outgoing quality can be attained.
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