臺灣博碩士論文加值系統

本論文以出租者的立場探討租賃設備在租期內的維修保養策略。一般來說，大部份的租賃設備皆具有退化性質，即隨設備的年齡或使用時間增加，設備的失效頻率亦隨之增加。為了降低設備的失效次數，出租者通常會在租賃期間對設備採取適當的預防保養。對出租者而言，每次出租給承租者可能不只有單一設備，在這種情況下，如何對多項設備進行預防保養是一個值得探討的主題。本論文將針對雙租賃設備為研究主題，採用年齡回溯法來描述設備的預防保養程度，建構雙租賃設備在實施個別與群體週期性預防保養策略下的期望總維修成本模式，並分別推導雙租賃設備的最佳個別與群體預防保養策略使期望總成本最小，進一步以數值範例來分析探討相關成本參數與時間參數對預防保養策略的影響，最後比較租賃設備實施個別與群體預防保養策略對於期望總成本之差異。

This paper investigates the optimal preventive maintenance policy for two leased devices within the leased period from the lessor’s viewpoint. In general, due to the inevitable deterioration of the device, it will fail more frequently as its age or usage increases. In order to reduce the number of failures, an appropriate preventive maintenance action should be performed by the lessor. For the lessor, the lessee may not only lease a single device at a time. Under this situation, how to perform preventive maintenance for many devices is a worthwhile research topic. The research topic of this paper focuses on the preventive maintenance policy of two leased devices. Age reduction method is used to describe the degree of preventive maintenance, the expected total maintenance cost models of two lease devices under individual and group preventive maintenance policies are constructed and the optimal individual and group preventive maintenance policy is obtained such that the expected total maintenance cost is minimized. Furthermore, the impact of the cost and time parameters on the optimal preventive maintenance policy are analyzed through numerical examples. Finally, the individual and group preventive maintenance policies for two leased devices are compared.

摘要 I
Abstract II
誌謝 III
目錄 IV
圖目錄 VI
表目錄 VIII
第一章 緒論 1
1.1研究背景與目的 1
1.2研究範圍與論文架構 2
第二章 文獻探討 5
2.1維修策略 5
2.2週期性預防保養 7
2.3非週期性預防保養 10
第三章 系統描述 12
3.1符號定義與模式假設 12
3.2個別保養策略下之期望總成本 14
3.3群體保養策略下之期望總成本 16

第四章 最佳預防保養策略 19
4.1個別預防保養策略 19
4.2群體預防保養策略 24
4.3韋伯分配之最佳預防保養策略 29
第五章 數值分析 31
5.1個別預防保養之數值範例 32
5.2群體預防保養之數值範例 33
5.3成本參數對設備預防保養策略的影響 34
5.4時間參數對設備預防保養策略的影響 40
第六章 結論與未來研究方向 44
6.1結論 44
6.2未來研究方向 45
參考文獻 46
附錄一、相關成本分析表 49

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