A Combined Upper-Sided Synthetic S 2 Chart for Monitoring the Process Variance

Tingting Shan, Liusan Wu and Xuelong Hu

Mathematical Problems in Engineering, 2020, vol. 2020, 1-6

Abstract:

In order to monitor the process variance, this paper proposes a combined upper-sided synthetic S 2 chart for monitoring the process standard deviation of a normally distributed process. This combined upper-sided synthetic S 2 chart comprises a synthetic chart and an upper-sided S 2 chart. The design and performance of the proposed chart are presented, and the steady-state average run length comparisons show that the combined upper-sided synthetic S 2 chart outperforms the standard synthetic S 2 chart as well as several run rules S 2 charts, especially for larger shifts in the process variance.

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlmpe:9102059

DOI: 10.1155/2020/9102059

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