Optimal design of a synthetic chart for monitoring process dispersion with unknown in-control variance
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- 作者：Baocai Guoa ; b ; Bing Xing Wanga ; wangbingxing@163.com" class="auth_mail" title="E-mail the corresponding author ; Yuan Chengb
- 关键词：Process variance ; Average run length ; Synthetic S2S2 chart ; Conforming run length ; Unbiased control chart
- 刊名：Computers & Industrial Engineering
- 出版年：2015
- 出版时间：October 2015
- 年：2015
- 卷：88
- 期：Complete
- 页码：78-87
- 全文大小：764 K
文摘
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We propose synthetic charts for monitoring process dispersion.
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The proposed scheme is for the two-sided shifts in process dispersion.
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The proposed scheme can effectively detect the changes in process dispersion.
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Tables are provided for the statistical properties of the proposed scheme.