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Aimed at the limitation that current statistical process control method are effective to only one fixed extend shift, a kind of robust control chart is proposed and the average product length calculating method of control chart is also discussed in this paper. Then, an optimal design scheme of the robust control chart is discussed. Comparisons of average product length of the robust optimal design...
This article considers an adaptive process control scheme for a process with incorrect adjustment. Incorrect adjustment of a process may result in shifts in both the process mean and variance,ultimately affecting the quality of products. We construct control charts with adaptive sampling intervals (ASI) to control the quality variable produced by the process with incorrect adjustment. The performance...
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