산업경영시스템학회지 (Journal of Korean Society of Industrial and Systems Engineering)
- 제24권67호
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- Pages.27-36
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- 2001
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- 2005-0461(pISSN)
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- 2287-7975(eISSN)
AR(1) 공정에서의 효과적인 공정평균 관리도
An Effective Control Chart for Monitoring Mean Shift in AR(1) Processes
초록
A standard assumption when using a control chart to monitor a process is that the observations from the process output are statistically independent. However, for many processes the observations are autocorrelated and this autocorrelation can have a significant effect on the performance of the control chart. In this paper, we consider combined control chart of monitoring the mean of a process in which the observations can be modeled as a first-order autoregressive process. The Shewhart control chart of residuals-EWMA control chart of the observations is considered and the method of combination is recommended. The performance of the proposed control chart is compared with the performance of other control charts using a simulation.
키워드