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研究生:劉文傑
研究生(外文):Wen-Chieh Liu
論文名稱:研究含機器當機(AR型)及不良品可完全重工修復之經濟生產批量模式之最佳生產週期
論文名稱(外文):Study of production cycle time for an economic production quantity model with machine breakdowns (AR-policy) and rework
指導教授:邱元錫邱元錫引用關係
指導教授(外文):Yuan-Shyi Peter Chiu
學位類別:碩士
校院名稱:朝陽科技大學
系所名稱:工業工程與管理系碩士班
學門:工程學門
學類:工業工程學類
論文種類:學術論文
論文出版年:2006
畢業學年度:94
語文別:中文
論文頁數:55
中文關鍵詞:不完美品質經濟生產批量模式機器當機重工修復
外文關鍵詞:ProductionEPQReworkMachine BreakdownRandom Defective Rate
相關次數:
  • 被引用被引用:20
  • 點閱點閱:245
  • 評分評分:
  • 下載下載:4
  • 收藏至我的研究室書目清單書目收藏:0
在實際的生產系統通常是不完美的,難免生產出部份不符合品質標準的產品,本研究主要探討生產程序中,將機器當機因素及不良品可進行重工修復等相關因子加入EPQ之決策的影響,當機器發生隨機性當機時且在機器修復後,繼續生產未完成批量之情形下的最佳生產時間相關決策分析,傳統經濟生產批量(economic production quantity ;EPQ)模式中,忽略機器發生當機的狀況,假設生產系統是完美的。但是可能與現實情形不符合因而難以運用,隨著機器運作時間越長,機器設備之狀況開始不穩定,有可能會產生不良品之情形,機器的當機也是不可避免的,隨著機器運作之時間增加,機器的相關設定也會偏離原始的設定,先前學者有研究有提到兩種經濟批量作業策略,分別是No-resumption(NR)型及Abort/resume(AR)型,其中最大的差異為機器修復後所採取的行動。
本研究主要以AR(abort/resume)作為機器維修後的處理方式,不良品則假設可完全重工修復,探討分析在隨機性當機之情形下,針對良品與不良品之處理,不良品進行重工修復,藉由以上假設建立數學模式,以決定最佳生產時間,使總生產成本符合經濟效益,最後提出實例來做驗證,並對其參數做敏感度分析,作為實際應用上與決策制定上之參考依據。
This research is concerned with an imperfect economic production quantity (EPQ) model with machine breakdown (Abort/resume–AR) and rework. One of the unrealistic assumptions of classic EPQ model is that it assumes manufacturing facility functions perfectly at all times. However, in most practical settings, due to process deterioration or other factors, defective items are generated. In this thesis, random defective rate and random machine breakdown (AR) are considered. For instance, as machine operation time getting longer, the status of production equipment may start to shift from stable condition to unstable, due to many different known or unknown factors. Most of the times, defective items produced as well as machine breakdowns are inevitable.
In this study we consider that when the machine is fixed and restored, all defective items are reworked and repaired immediately in the same production cycle. Mathematical modeling and analysis is employed by this study, exponential mean time between breakdowns is assumed. The optimal production time per cycle and the expected annual inventory costs for the imperfect quality EPQ model with machine breakdown (AR) and rework are derived. Numerical examples are provided to demonstrate its practical usages.
中文摘要 i
Abstract ii
誌謝 iii
目錄 I
表目錄 III
圖目錄 IV
第一章 緒論 1
1.1 研究動機與目的 2
1.2 研究範圍與界定 2
1.3 研究方法與架構 3
第二章 文獻探討 6
2.1 傳統經濟訂購/生產批量模式 6
2.2 不良品之存貨系統相關文獻 7
2.3 不良品重新修復之存貨系統相關文獻 8
2.4 機器不可靠生產系統之相關文獻 10
第三章 經濟生產週期模式之建構 13
3.1 符號假設與分析說明 13
3.2 EPQ模式下之生產系統分析 15
3.3 Case 1:在生產週期內當機器發生當機之情形 16
3.3.1 問題描述 16
3.3.2 模式建立與公式推導 17
3.4 Case 2:在生產週期內機器未發生當機之情形 21
3.4.1 問題描述 21
3.4.2 模式建立與公式推導 21
3.5 整合Case 1和Case 2之生產模式分析 24
3.5.1 機器當機時之機率分配為指數分配 24
3.5.2 機器當機時之機率分配為均勻分配 29
3.6 EPQ模式之驗證 30
第四章 實例驗証與敏感度分析 32
4.1 整合模式實例1驗證(當機器當機之機率分配為指數分配)32
4.1.1 平均當機間隔時間(1/β)變動分析 35
4.1.2 不良率變動時之期望總成本分析 36
4.1.3 生產時間變動與總成本之分析 37
4.2 整合模式實例2驗證 38
4.2.1 不良率變動時之期望總成本分析 40
4.2.2 生產時間變動與總成本之分析 41
第五章 討論與結論 42
5.1 比較生產時間內是否發生當機之情形 42
5.2 比較生產時間內發生當機情形之不同策略(NR型及AR型) 43
5.3 當機器當機之機率分配分別為指數分配與均等分布時 45
5.4 結論與未來方向 47
5.4.1 未來研究方向 49
參考文獻 50
附錄A A-1
附錄B B-1
附錄C C-1
附錄D D-1
附錄E E-1
附錄F F-1
附錄G G-1
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