품질경영학회지 (Journal of Korean Society for Quality Management)
- 제27권1호
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- Pages.35-45
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- 1999
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- 1229-1889(pISSN)
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- 2287-9005(eISSN)
상관변수를 이용한 공정 감시 절차
A Process Monitoring Procedure Using a Correlated Variable
초록
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.
키워드