| 引用本文: | 刘任洋,李华,李庆民,等.多级可修备件库存的生灭过程建模与优化.[J].国防科技大学学报,2017,39(3):111-120.[点击复制] |
| LIU Renyang,LI Hua,LI Qingmin,et al.Modeling and optimization of multi-echelon inventory for repairable spares based on birth and death process[J].Journal of National University of Defense Technology,2017,39(3):111-120[点击复制] |
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| 多级可修备件库存的生灭过程建模与优化 |
| 刘任洋1, 李华1, 李庆民2, 熊宏锦3 |
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(1. 海军工程大学 兵器工程系， 湖北 武汉 430033;2. 海军工程大学 科研部， 湖北 武汉 430033;3. 海军装备部驻重庆地区军事代表局， 重庆 400042)
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| 摘要: |
| 针对VARI-METRIC模型在低可用度下结果不准确的问题，建立基于生灭过程的任意等级、任意层级可修件库存优化模型。通过对各级站点、各类备件需求率与到达率的预测，对每个部件建立其生灭过程模型，并提出基于生灭过程的装备可用度计算方法。以整个保障系统的装备可用度为约束指标，以备件总购置费最低为目标，利用边际算法得到最优备件配置方案，并建立仿真模型对所得优化方案进行评估与调整。结合算例，以仿真结果作为检验标准，选取权威的VMETRIC软件与该解析模型在优化性能、计算精度及适用性上进行对比和说明。结果表明，无论是解析模型还是VMETRIC软件，均存在一定的适用范围，而采用解析与仿真相结合的方法无疑具有更强的适应性。 |
| 关键词: 生灭过程 可修复备件 可用度 库存优化 |
| DOI：10.11887/j.cn.201703018 |
| 投稿日期：2016-01-12 |
| 基金项目:国家部委基金资助项目（51304010206，51327020105） |
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| Modeling and optimization of multi-echelon inventory for repairable spares based on birth and death process |
| LIU Renyang1, LI Hua1, LI Qingmin2, XIONG Hongjin3 |
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(1. Department of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China;2. Office of Research & Development, Naval University of Engineering, Wuhan 430033, China;3. Military Representative Office of Naval Equipment Department in Chongqing, Chongqing 400042, China)
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| Abstract: |
| For it is not accurate under the condition of low availability, VARI-METRIC model of inventory optimization for multi echelon multi-indenture repairable spares was built. Firstly, the birth and death process of each component was established by the prediction of demand rate and arrival rate of each spares in each site. Then, a computational method of availability was put forward based on the birth and death process. With the constraints of availability and objective of lowest cost, the optimal inventory distribution result was obtained by marginal algorithm and the simulation model was built to evaluate and adjust the result. In an actual example, the analytic model and the VMETRIC were compared and described in aspects of optimization performance, calculation precision and applicability by simulation verification. Results show that both the analytic model and the VMETRIC have certain scope of applicability and the method combined analytic model and simulation has a stronger applicability. |
| Keywords: birth and death process repairable spares availability inventory optimization |
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