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    題名: Optimal maintenance time for imperfect maintenance actions on repairable product
    作者: Tsai, Tzong-Ru;Liu, Pang-Hsu;Lio, Y.L.
    貢獻者: 淡江大學統計學系
    關鍵詞: Maximum likelihood estimate;Minimal repair;Nonhomogeneous Poisson process;Power law process;Preventive maintenance;Truncated sampling
    日期: 2011-05
    上傳時間: 2011-10-23 16:38:27 (UTC+8)
    出版者: Kidlington: Pergamon
    摘要: This paper develops a maintenance strategy for repairable products that combines imperfect maintenance actions at pre-scheduled times and minimal repair actions for failures. Under a power law process of failures, an expected total cost is developed that involves the sum of the total cost of imperfect preventive maintenances and the expected total cost of minimal repairs. Moreover, a searching procedure is provided to determine the optimal maintenance schedule within a finite time span of warranty. When the parameters of the power law process are unknown, the accuracy of the estimated maintenance schedule is evaluated based on data through an asymptotic upper bound for the difference of the true expected total cost and its estimate. The proposed method is applied to an example regarding the maintenance of power transformers and the performance of the proposed method is investigated through a numerical study. Numerical results show that the proposed maintenance strategy could save cost whether an imperfect maintenance action or the perfect maintenance action is implemented.
    關聯: Computers & Industrial Engineering 60(4), pp.744–749
    DOI: 10.1016/j.cie.2011.01.008
    顯示於類別:[統計學系暨研究所] 期刊論文

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