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Reduction rules-based search algorithm for opportunistic replacement strategy of multiple life-limited parts

Reduction rules-based search algorithm for opportunistic replacement strategy of multiple life-limited parts
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摘要 多重生活有限部分(LLP ) 的机会主义的代替是广泛地在工业存在的一个问题。LLP 的代替策略在全部的维护费用上有大影响到很多设备。这篇文章集中于为这个问题发现一个快、有效的算法。改进算法效率,六条减小规则从答案可行性, LLP 的代替的决心,维护场合的决心和答案 optimality 的观点被建议。基于这六条减小规则,一个搜索算法被建议。这个搜索算法能识别一或几个最佳的答案。一个数字实验证明这六条减小规则是有效的,并且如果设备的全部的生活比 55000 短, LLP 的数字是不到 11,算法消费的时间是不到 38 年代。一个特定的盒子证明算法能获得比传统的方法的结果好一些的最佳的答案在里面 10 年代,和它能为当决定一台飞机引擎的维护 workscope 时,决定 to-be-replaced LLP 提供支持。因此,算法对在飞机引擎有关多重 LLP 的机会主义的代替设计应用适用。 The opportunistic replacement of multiple Life-Limited Parts (LLPs) is a problem widely existing in industry. The replacement strategy of LLPs has a great impact on the total maintenance cost to a lot of equipment. This article focuses on finding a quick and effective algorithm for this problem. To improve the algorithm efficiency, six reduction rules are suggested from the perspectives of solution feasibility, determination of the replacement of LLPs, determination of the maintenance occasion and solution optimality. Based on these six reduction rules, a search algorithm is proposed. This search algorithm can identify one or several optimal solutions. A numerical experiment shows that these six reduction rules are effective, and the time consumed by the algorithm is less than 38 s if the total life of equipment is shorter than 55000 and the number of LLPs is less than 11. A specific case shows that the algorithm can obtain optimal solutions which are much better than the result of the traditional method in 10 s, and it can provide support for determining tobe-replaced LLPs when determining the maintenance workscope of an aircraft engine. Therefore, the algorithm is applicable to engineering applications concerning opportunistic replacement of multiple LLPs in aircraft engines.
作者 Xuyun FU Shisheng ZHONG Xuyun,FU;Shisheng,ZHONG
出处 《中国航空学报:英文版》 SCIE EI CAS CSCD 2018年第1期21-30,共10页 Chinese Journal of Aeronautics
基金 This study is co-supported by the Key National Natural Science Foundation of China (No. U1533202), the Civil Aviation Administration of China (No. MHRD20150104) and the Fundamental Research Funds for the Central Universities (No. HIT.NSRIF.201704).
关键词 搜索算法 基于规则 主义 生活 多重 维护费用 飞机引擎 LLP Aircraft engine Maintenance occasion Opportunistic replacement Reduction rules Replacement of life-limited parts
作者简介 Corresponding author. E-mail address: fuxuyun@hit.edu.cn (X. FU).
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