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  • 學位論文

整合PM與SPC之EWMA管制圖設計

Integration of PM and SPC to Design a EWMA Control Chart

指導教授 : 陳雲岫

摘要


本論文探討當生產設備壽命屬韋伯分配時,整合預防保養與統計製程管制用於設計指數加權移動平均管制圖。討論有預防保養,和無預防保養的指數加權移動平均管制圖是否有差異。本研究首先針對考量預防保養下,求得每單位時間下最少成本之對應參數,樣本大小(Nm)、第 時段含抽樣及檢驗(hi)、管制界限(k)、以及保養次數(m)。數值分析結果顯示當Nm=551、h1=148、k=2.615、m=4的情況下,最佳之預防保養目標值E(C)=60.1422。設備壽命時間屬於韋伯分配,韋伯分配參數值愈大者,會有愈大的目標值。另以模擬試產生製程數據評估ARL,結果顯示有執行預防保養的統計製程管制EWMA管制圖,比無執行預防保養的統計製程管制EWMA管制圖成本較高但ARL較長。

並列摘要


In this study, we integrated preventive maintenance and SPC to design a EWMA control chart. We assumed the life time of a manufacturing machine follows Weibull distribution. The main concern is to understand the difference of designing EWMA control charts with PM or without PM. The minimum cost per unit time based on the corresponding parameters, the sample size (Nm), the first time with the sampling and testing (hi), control limits (k), as well as maintenance frequency (m) value is cakulated for preventive maintenance. Numeral result shows that the best preventive maintenance target value E(C) = 60.1422 attains with Nm = 551, h1 = 148, k = 2.615, m = 4.Also, a higher parameter value of Weibull distribution is a larger target E(C) has. Though, a EWMA control chart with preventive maintenance consideration, costs higher than EWMA control chart without PM but the ARL0 is longer than the one without PM.

參考文獻


[1] 楊義明,從經濟觀點設計X ̅管制圖-製程失效機構屬韋氏分配,元智大學, 博士論文,2001。
[2] 黃馨漁,以多目標GA演算法探討經濟管制圖最佳化之研究,元智大學,碩士論文,2012。
[5] C.RICHARD CASSADY,ROYCE BOWDEN,LEEMIN LIEW and EDWARD A.POHL,Combining preventive maintenance and statistical process control: a preliminary investigation,IIE Transactions (2000)32,47-1478。
[6] James M. Lucas,Michael S. Saccucci,Exponentially Weighted Moving Average Control Schemes: Properties and Enhancements,TECHNOMETRICS,FEBRUARY 1990,VOL. 32,NO.1。
[7] Kevin Linderman,Kathleen E. McKone-Sweet,John C. Anderson,An integrated systems approach to process control and maintenance,European Journal of Operational Research 164 (2005) 324–340。

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洪佩芳(2008)。風險係數改變對投資組合保險績效的影響〔碩士論文,淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2008.00570
Wei, Y. C. (2010). 隱含波動度, 投資人情緒與市場指數之互動關係與策略應用 [doctoral dissertation, National Chiao Tung University]. Airiti Library. https://doi.org/10.6842/NCTU.2010.00856
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