基于可用度的N部件可修串联系统最优更换策略  

Optimal Replacement Policy for Series Repairable System of N Components Based on Availability

作　　者：谭林[1] 蒲婷 郭波[1] 

机构地区：[1]国防科学技术大学信息系统与管理学院,湖南长沙410073 [2]总装备部工程设计研究总院,北京100028

出　　处：《兵工学报》2009年第8期1103-1107,共5页Acta Armamentarii

摘　　要：可修串联系统是一类经典的可靠性模型,在实际系统中较为常见。在假定故障部件不能"修复如新"的条件下,基于几何过程模型研究可修串联系统的最优更换策略。推导出系统经长期运行单位时间内期望效益和期望可用度的表达式,在此基础上以可用度为目标函数,以费用率为约束条件建立维修策略优化模型。给出算例,通过与目前现有结果的比较,验证新模型的合理性。A series repairable system is one of the classical reliability models and is usually used in practice. An optimal replacement policy for series repairable system is studied assuming that the component after repair is not ＂as good as new＂ by using the geometric process model. The expressions of the longrun expected benefit and the availability per unit time are deduced. Furthermore, the replacement policy model is presented with minimizing the availability rate subject to an appropriate cost rate. Lastly, a numerical example is presented, the results compared with the actual ones approve that the new model is reasonable.

关 键 词：系统评估与可行性分析 串联系统 更新过程 几何过程 不完全维修 更换策略 

分 类 号：O175.3[理学—数学]