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考虑库存损耗的单部件系统可修备件需求模型
引用本文:陈童,黄卓,谭林,李羚玮. 考虑库存损耗的单部件系统可修备件需求模型[J]. 系统工程学报, 2012, 27(2): 270-278
作者姓名:陈童  黄卓  谭林  李羚玮
作者单位:1. 国防科技大学信息系统与管理学院系统工程系,湖南长沙410073;解放军91526部队装备部,广东湛江524064
2. 国防科技大学信息系统与管理学院系统工程系,湖南长沙,410073
基金项目:国家自然科学基金资助项目(70501031)
摘    要:
本文研究具有库存损耗的单部件系统可修备件需求模型;采用马尔可夫到达过程(Markovian删val pcess,MAP)代替Poisson过程、更新过程等经典随机过程描述备件需求情况.假设库存备件寿命服从指数分布,故障件维修时间服从一般分布,建立了一种描述能力更强的可修备件需求模型;给出了系统的可用度、工作时间周期、停机时间周期等参数和规定条件下的两种备件需求量算法,并给出了数值算例说明所建模型的有效性.

关 键 词:备件需求  库存损耗  马尔可夫到达过程  一般分布

Repairable spare parts demand model of single unit system with perishable inventory
CHEN Tong , HUANG Zhuo , TAN Lin , LI Ling-wei. Repairable spare parts demand model of single unit system with perishable inventory[J]. Journal of Systems Engineering, 2012, 27(2): 270-278
Authors:CHEN Tong    HUANG Zhuo    TAN Lin    LI Ling-wei
Affiliation:1 (1.System Engineer Department,College of Information System and Management,National University of Defense Technology,Changsha 410073,China; 2.Equipment Department of 91526 PLA Troops,Zhanjiang 524064,China)
Abstract:
This paper investigates a repairable spare parts demand model of single unit system with perishable inventory.The spare parts demand process is described by Markovian arrival process(MAP),instead of Poisson process,renewal process or others typical stochastic process.The items in the inventory have random shelf time and follow an exponential distribution,and the repair times follow a general distribution.The paper presents a repairable spare parts demand model that can describe real situations better.And the availability,up and down period of this system,two algorithms to get the amount of spares under certain restriction are obtained.Finally, numerical examples are given to illustrate the effectiveness of the model.
Keywords:spare parts demand  perishable inventory  Markovian arrival process  general distribution
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