任意寿命分布下k/N(G)系统定时维修决策模型  

Time Based Maintenance Optimization Model for k / N( G) System with Various Lifetime Distributions

作　　者：卢雷[1] 杨江平[1] 

机构地区：[1]空军预警学院,湖北武汉430019

出　　处：《现代防御技术》2015年第1期135-139,共5页Modern Defence Technology

基　　金：国防科研基金项目(KJ2011196)

摘　　要：针对大型k/N(G)系统维修保障特点,提出了一种定时维修策略。以系统使用可用度为约束条件,以系统期望维修费用率最小化为优化目标,建立了任意寿命分布下k/N(G)系统定时维修优化模型,并提出了一种求解模型的数值迭代算法。实例分析表明,该模型既能计算定时维修策略下k/N(G)系统使用可用度和期望维修费用率,又能确定最佳的定时维修间隔期和最佳的换件维修人数,可为k/N(G)系统预防性维修提供决策支持。A time based maintenance policy for large-scale k / N（ G） system is presented. This policy is provided by the maintenance and support characteristic of k / N（ G） system. On the basis of the policy,a maintenance optimization model is established. The model minimizes system maintenance cost rate under the condition of system operational availability. Then,a numeric iteration algorithm is proposed to solve the model. Example shows that the model can compute k / N（ G） system operational availability and system maintenance cost rate,and meanwhile the model can obtain the optimal maintenance interval time and the optimal number of maintenance personnel. This research provides decision supporting for the preventive maintenance of large-scale k / N（ G） system.

关 键 词：冗余系统 定时维修 寿命分布 可用度 维修费用率 

分 类 号：TH165.3[机械工程—机械制造及自动化] N945.2[自然科学总论—系统科学]