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Adaptive Control Charts for Two Dependent Process Steps
Adaptive control chart
Two dependent process steps
|Issue Date: ||2009-09-14|
In recent years, many research papers about adaptive control charts all consider a single process step. However, there are many multiple process steps in industry process. In this article, we propose adaptive control charts to monitor two dependent process steps, and their average time to signal (ATS) is calculated by Markov chain approach to measure the performance of these proposed control charts. It has been shown that the performance of the adaptive sampling interval (ASI) control charts in detecting small and moderate shifts in process means is better than the fixed sampling interval control charts, especially for small shifts, and the proposed adaptive sample size and sampling interval (ASSI) control charts have better performance in detecting very small shifts in process means than the fixed sample size and sampling interval control charts and the adaptive sample size control charts.
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|Source URI: ||http://thesis.lib.nccu.edu.tw/record/#G0091354003|
|Data Type: ||thesis|
|Appears in Collections:||[統計學系] 學位論文|
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