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題名 | Shewhart、CUSUM與EWMA計數值管制圖之品質偵測能力比較研究=A Comparative Study on Shewhart, CUSUM and EWMA Attribute Control Charts |
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作者 | 黃允成; 林宜蓉; 張妤宣; | 書刊名 | 管理研究學報 |
卷期 | 17 2017.12[民106.12] |
頁次 | 頁43-86 |
分類號 | 494.56 |
關鍵詞 | Shewhart管制圖; CUSUM管制圖; EWMA管制圖; 平均連串長度; Shewhart control charts; CUSUM control charts; EWMA control charts; Average run length; ARL; |
語文 | 中文(Chinese) |
中文摘要 | 根據以往研究指出,當製程產生大偏移時,Shewhart管制圖有不錯的偵測效果,但對現今產品設計以高品質為目標而言,大偏移之監測能力已不足以滿足需求,故當製程有微量變異時,應使用EWMA管制圖或CUSUM管制圖來監測製程。當製程品質水準在管制範圍內時,此時希望ARL_0越大越好;反之,當製程品質水準在管制範圍外時,則希望ARL_1越小越好。故本研究將探討Shewhart管制圖、CUSUM管制圖與EWMA管制圖分別在不同的品質特性下,何者管制圖之偵測績效較佳。最後,本文提出7點具體結論供後續研究及實務應用上參考。 |
英文摘要 | Based on literature review, when the process has a large change, Shewhart control chart's detect effects will better than the others. But for today's high-quality products requirement, the detect ability for large changes has been insufficient to meet the demand. Therefore, when the process has a small change, EWMA control chart or CUSUM control chart should be used to monitor the process. When the process is in-control, the average run length is hoped the bigger the better. On the contrary, when the process is out-control, the average run length is hoped the smaller the better. In this paper, we will explore and compare the detecting performance among the Shewhart, CUSUM and EWMA control charts under a variant of quality characteristics. Finally, seven conclusions are drawn for future studies and practical applications. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。