系统工程与电子技术

• 系统工程 • 上一篇    下一篇

串件拼修策略下不完全修复件时变可用度评估建模

周亮, 彭英武, 李庆民, 李华   

  1. 海军工程大学兵器工程系, 湖北 武汉 430033
  • 出版日期:2017-04-28 发布日期:2010-01-03

Time-varying availability evaluation modeling of incomplete repair parts under cannibalization

ZHOU Liang, PENG Yingwu, LI Qingmin, LI Hua   

  1. Department of Weapon Engineering, Naval University of Engineering, Wuhan 430033, China
  • Online:2017-04-28 Published:2010-01-03

摘要:

任务期间对车间更换单元(shop replaceable unit,SRU)进行串件拼修,减少现场可更换单元(line replaceable unit,LRU)因SRU短缺造成LRU维修等待的时间,是提高装备可用度的有效途径。针对任务期间备件最终修复概率小于1、备件处于非稳态需求时传统完全可修件库存策略不合理的问题,扩展可修复备件多级管理(multi-echelon technique for recoverable item control,METRIC)理论,建立使用现场和后方基地两级SRU串件拼修对策下不完全修复件两级两层时变可用度评估模型。列举案例对比分析串件拼修对策前后装备可用度变化,分析结果表明,串件拼修能一定程度上提高装备可用度,对装备可用度提高程度与LRU最终修复概率和初始备件携带数量有关。最后,采用蒙特卡罗仿真方法对串件拼修对策下的备件保障模型进行了验证,仿真结果与解析结果误差在2%以内。

Abstract:

To reduce repair waiting time of field replaceable unit (LRU) caused by shortage of shop replacement unit (SRU), the cannibalization policy for the SRU is an effective way to improve the availability of equipment. For the problem that the traditional repairable system inventory strategy is not reasonable when the final repairable probability of spare parts is less than 1, it extends the multi-echelon technique for recoverable item control (METRIC) theory, and a model is built for evaluating the time-varying availability of incomplete repair parts under the condition of the two-level SRU cannibalization strategy. Compare and analyze the changes of the equipment’s availability before and after cannibalization. The experiment results show that the equipment availability can be improved to a certain extent, and the improved degree of equipment availability is related to the final repair probability of LRU and the number of initial spare parts. Finally, Monte Carlo simulation method is used to verify the model of spare parts support, and the error of simulation results and analytical results is less than 2%.