Preventive maintenance for a single-machine system under variable operational conditions

Preventive maintenance for a single-machine system under variable operational conditions
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可变运行条件下单机系统的预防性维护

DOI:
10.1177/1748006x16642332
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发表时间:
2016-05
期刊:
Proceedings of the Institution of Mechanical Engineers - Part O: Journal of Risk and Reliability
影响因子:
--
通讯作者:
Wang Hong
Wang Hong
中科院分区:
其他
文献类型:
--
作者:
Hu Jiawen;Jiang Zuhua;Wang Hong

文献摘要

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机器在可变的操作条件下工作是常见的工业实践。本文建立了一个变工况下机器的不完全维修模型,假定机器在不同工况下的故障时间分布服从加速故障时间模型。针对规划时间段内未来运行状态信息未知的情况,提出了一种基于当前危险率函数的预防性维修策略。算例分析表明,该方法与预先给定全部工况信息,不考虑工况影响的情况下的结果进行了比较。研究结果揭示了将运行工况与预防性维修优化相结合的必要性。此外,性能的建议的政策已被探索与不同的参数的操作条件。
It is a common industrial practice that machines work under variable operational conditions. This article develops an imperfect maintenance model for machines working under variable operational condition, assuming that the failure time distribution of machines under different operational conditions follows the accelerated failure time model. To deal with the case that the future operational conditions’ information over the planning time interval are unknown in advance, it proposes a preventive maintenance policy which is based on current hazard rate function. An example is studied, and the results are compared with the cases that the whole operational condition information is given in advance, and the influence of operational condition is not considered. The results reveal the necessity of integrating operational condition with preventive maintenance optimization. In addition, the performance of the proposed policy has been explored with different parameters of operational conditions.
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影响因子: --
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