Economic design of two-stage non-central chi-square charts for dependent variables
學年 100
學期 1
出版（發表）日期 2011-11-01
作品名稱 Economic design of two-stage non-central chi-square charts for dependent variables
作品名稱（其他語言）
著者 Tsai, Tzong-ru; Chiang, Jyun-you; Chang, Shing-i
單位 淡江大學統計學系
出版者 Kidlington: Pergamon
著錄名稱、卷期、頁數 Computers & Industrial Engineering 61(4), p.970-980
摘要 Non-central chi-square charts are more effective than the joint View the MathML source and R charts in detecting small mean shifts or variance changes of a performance variable. However, the cost may be high to monitor a primary quality characteristic, such as the weight of each bag in a cement filling process. It is more economical to monitor a surrogate variable, for example, the milliampere of the load cell. When the correlation of the performance variable of surrogate variable exists, this article proposes a two-stage charting design to monitor either the performance variable or its surrogate variable in an alternating fashion rather than monitoring the performance variable alone. The proposed method simplifies process monitoring when users only concern about whether a process is in control or not. The application of the proposed method and the advantages of the proposed chart over the existing methods are presented through an example. Numerical results show that the proposed chart is insensitive on the correlation of the performance variable and surrogate variable even when the historical information on the correlation coefficient is not very accurate.
關鍵字 Economic design;Markov chain approach;Non-central chi-square chart;Surrogate variable;Two-stage control charts
語言 en
ISSN 0360-8352; 1879-0550
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Chiang, Jyun-you
審稿制度 否
國別 NLD
公開徵稿
出版型式 ,電子版,紙本
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