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研究生:張閔智
研究生(外文):Min-Chih Chang
論文名稱:考慮機會性基礎的年齡及失效次數之置換策略
論文名稱(外文):Opportunity-Based Age and Number of Failures Replacement Policy
指導教授:張志平張志平引用關係
指導教授(外文):Jhy-Ping Jhang
學位類別:碩士
校院名稱:華梵大學
系所名稱:工業管理學系碩士班
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:2001
畢業學年度:89
語文別:中文
論文頁數:1
中文關鍵詞:可靠度維修度置換小修理機會
外文關鍵詞:ReliabilityMaintainabilityReplacementMinimal RepairOpportunity
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面對科技的日益進步,系統設備愈來愈龐大且複雜,若一旦發生故障,將導致嚴重的傷害及損失,因此可靠度和維護度在產品的設計過程中顯得日益重要。高可靠度的產品是品質保證的象徵,而高維修度是維持系統壽命的利器,因此最佳置換策略扮演極重要角色。
本論文探討系統擁有小修理及置換的機會性基礎的年齡及失效次數之置換策略。此系統有兩種失效型式,即型一失效(輕微失效)與型二失效(嚴重失效)。一般而言,系統被置換的時間,將視型二失效發生、第 次小修理或超過年齡 之機會發生,就其中何者先發生來決定。型一與型二失效係與年齡相關,發生型一失效由小修理來加以修復,若發生型二失效則藉由置換來排除。而機會的發生來自於卜瓦松過程,與系統零件失效相互獨立。本研究的主要目的就是推導出單位時間期望的長期平均成本,及在某些條件下找出最佳的置換時間 與小修理次數 ,並考慮許多特例,最後以數值實例驗證說明。
To face the improvement of the technology, the equipment of the system is getting more and more complicated and larger. Once the failure occurs, it will cause serious damage and harm. So the reliability and maintainability have significant impact on the process of product design. High reliability of the product is an emblem of the warranty of quality. High maintainability is a good tool to maintain the life of the system So the optimum replacement policy plays an important role.
In this thesis, a system is replaced by an opportunity-based age or number of minimal repairs. The system has two types is of failures, which are type I failures (minor failures) and type II failures (catastrophic failures). In generally, the time which system is replaced at first type II failure or the opportunity after age or minimal repair, whichever occurs first. Type I and type II failures are age-dependent. Type I failures be recondition by minimal repairs, whereas type II failures are removed by replacements. The opportunity arises according to a Poisson process, which is independent of failures of the component. The primary aim of this thesis is to derive the expected log-run average cost per unit time. The optimal critical time and the optimal repair time which would be found in some conditions. Various special cases are considered. Finally, a numerical example is given.
誌謝 I
中文摘要 II
英文摘要 III
目錄 IV
表目錄 VI
圖目錄 VII
第一章 緒論 1
1.1研究動機 1
1.2研究目的 4
1.3研究流程 6
1.4研究範圍與限制 7
1.5論文架構 8
第二章 相關文獻探討 10
2.1維修策略的分類 10
2.2維修與置換之相關文獻 13
第三章 相關理論說明 18
3.1長期期望平均成本 18
3.2非齊次卜瓦松過程 18
3.3兩連續型二失效的存活分配 19
3.4修理成本極限 20
3.5失效率 20
3.6系統可靠度 21
3.7符號說明與基本假設 26
3.7.1符號說明 26
3.7.2基本假設 28
第四章 機會性年齡與失效次數之置換策略 29
4.1問題描述 29
4.2模式之建立與分析 29
4.2.1長期情況 33
4.3特殊情形 37
4.4 數值分析 38
第五章 結論與未來研究方向 47
5.1 結論 47
5.2未來研究方向 47
參考文獻 49
附錄A 電腦程式碼 56
作者簡介 71
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