The Economic Design of Quality Improvement Strategy for Manufacturing Process

經濟設計下製程品質改善策略之探討

黃允成(Yun-Cheng Huang) ； 李宗龍(Tsung-Lung Li) ； 曾志文(Chih-Wen Tseng)

《品質學報》 16卷5期 (2009/10) Pp. 347-367

摘要

在生產系統中，製程常會發生異常狀況，管理者爲了確保品質穩定，會透過各種改善品質方法，達到穩定製程品質的目的。因爲不同改善品質方法，所須付出的品質成本與獲利關係非常複雜，會因不同產業、不同時間而產生變化，故本研究在統計製程管制架構下，針對製程發生異常狀況，探討管理者採取不同改善品質方法下，所需付出的成本及預期獲利情況，並以品質成本與效益之觀點，建構品質與成本之利潤增額模型，找出使增額利潤最大化下之最佳品質改善決策。最後舉一數值分析範例，說明此研究主題之意義與驗證結果，獲得之具體結果，可作爲後續研究及實務應用之參考。

關鍵字

經濟設計 ； 品質改善 ； 品質成本 ； 品質管制

並列摘要

The paper focuses on quality improvement strategy for manufacturing process. Managers used all kinds of quality improvement methods to keep their product qualities stable. When the process was abnormal and made the qualities out of range and then defective. In different industries, which have various quality improvement methods and procedures, those had more complicated relationship between quality costs and revenue. For the purpose of finding the best quality improvement strategy, this paper presents an incremental profit model. We assumed that the characteristic of product was normally distributed with known mean and variance, and assuming a reasonable improving cost and expected profit structure to obtain optimal values for the process mean and variance. Furthermore, we also developed a numerical example to illustrate the meaning of this research and the result, which could be used for future studies and practical applications.

並列關鍵字

economic design ； quality improvement ； quality cost ； quality control

參考文獻

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