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題 名 | 晶圓製造批量優先序分佈與設定之研究=A Study of Priority Distribution and Setting in Wafer Fabs |
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作 者 | 陳建良; 蕭佳毓; 鄭智強; | 書刊名 | 中原學報 |
卷 期 | 30:1 2002.03[民91.03] |
頁 次 | 頁33-49 |
分類號 | 448.552 |
關鍵詞 | 晶圓製造; 在製品; 優先序分佈; 優先序設定; Wafer fab; Wafer-in-process; Priority distribution; Priority setting; |
語 文 | 中文(Chinese) |
中文摘要 | 在晶圓製造廠中,在製品的管理非常重要,因為它影響到系統的平均在製品水準與週期時間。在製晶管理的方法之一,是針對不同之批量給予不同之優先序o在實務上,優先序通常分成五個等級(由高至低):Super Hot 、Hot、Rush、Normal、Slow0 本研究將探討兩個主題:一是尋找合理之優先序分佈,二是比較動態修改優先序方法與不修改優先序之方法。本文以AutoSched模擬軟體發展一模擬模式以評估各績效指標(週期時間平均值、週期時間標準差、在製品平均值、在製品標準差)。模擬結果顯示動態優先序設定法配合(4%Super Hot, 16% Hot, 16% Rush, 32% Norma1, 32% Slow)與(10% Super Hot, 15% Hot, 20% Rush, 25% Normal, 30% Slow)的優先序分佈可導致最低之週期時 間平均值與在製晶平均值,並有合理之週期時間標準差與在製品標準差。 |
英文摘要 | In a wafer fab, the management of wafer-in-process (WIP) is important,it affects the cycle time and average WIP 1eve1 of the system. One way to manage the WIP is to assign different priorities to different 10ts. In practice, the priority can be divided into five classes (from high to 10w): super hot, hot, rush, norma1, and slow. This research tries to answer two questions. Fire, what is a reasonab1e distribution of these priorities? Second, shou1d a 10t keep its priority or dynamically change its priority throughout the fabrication process to resu1t in good system performance? AutoSched simu1ation mode1s are deve10ped to eva1uatere performance (such as the average and standard deviation of cyc1e time and WIP) of combination ofpriority distributions and priority setting methods. Simu1ation resu1ts show that a dynamic priority setting method combined with priority distributions of 4% super hot, 16% hot, 16% rush, 329 norma1, and 32% slow as well as 10% super hot, 15% hot, 20% rush, 25% norma1, and 30% slow 1ead to the best average cyc1e time and average WIP leve1 and reasonable standard deviation ofcyc1e time and WIP 1evel. |
本系統中英文摘要資訊取自各篇刊載內容。