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題名 | Optimization of Non-Periodic Preventive Maintenance Cost in Series-Parallel Systems Using Importance Measures of Components=利用元件重要性指標最佳化--串並聯系統之非週期性預防維修成本 |
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作 者 | 王春和; 林德偉; | 書刊名 | 品質學報 |
卷期 | 20:5 2013.10[民102.10] |
頁次 | 頁551-570 |
分類號 | 494.56 |
關鍵詞 | 可靠度; 非週期性預防維修; 失效限制策略; 元件重要性指標; Reliability; Non-periodic preventive maintenance; Failure limit policy; Importance measure; |
語文 | 英文(English) |
中文摘要 | 本研究針對多元件串並聯系統之失效限制策略進行探討,以系統可靠度為限制條件,總維修成本最小化為最佳化的準則,經由分析串並聯系統的特性,建立一單位成本延長壽命指標(the unit-cost extended life),從而建構一個最佳化的演算法,以有效求解所建立的非週期性預防維修模式,來決定任務時間內系統中的維修元件,以及元件的維修時間點,以最小化維修總成本。本研究最後以三個模擬案例,說明所建構方法的有效性與實務應用性。 |
英文摘要 | This study aims to construct an optimization algorithm to solve the non-periodic preventive maintenance (PM) model of a series-parallel system. The failure limit policy is employed to perform PM. Under such policy, the maintenance components and their maintenance times are determined to minimize total maintenance cost. From the viewpoints of maintenance, the constructed optimization algorithm evaluates the extent to which maintaining components benefit the series-parallel systems. Furthermore, due to some drawbacks or limitations for past developed importance measures, two importance measures of components including the unit-cost mean time to failure (UCMTTF) and the unit-cost extended life (UCEL) are developed to facilitate determining the maintenance policy. The UCMTTF measure mainly evaluates the extent to which maintaining a component extends MTTF for sub-parallel systems. While the UCEL measure mainly evaluates the extent to which maintaining components improve the UCEL for the series-parallel system. On the basis of UCMTTF and UCEL measures, this study constructs an optimization algorithm to minimize total maintenance cost subject to a threshold value of system reliability for the non-periodic PM model in a series-parallel system. Three simulated cases demonstrate the effectiveness and the practicality of the proposed method in optimizing the non-periodic PM model of a series-parallel system. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。