一种广义不完全维修情形下系统失效过程分析

A Generalized Imperfect Maintenance Case System Failure Process Analysis

针对实际工作中无法通过维修手段让系统恢复如新,进而导致较难对系统的失效过程给予完美的刻画,Kijima在1989年提出一种与时间和维修次数相关的概念,并称之为虚拟寿命。虚拟寿命这一概念的运用,使得失效强度由虚拟寿命决定而不是系统实际运行的时间决定,基本想法是希望通过减少系统真实运行时间所得到的虚拟寿命去模拟系统的失效强度函数。文章讨论了如何将虚拟寿命这一想法与对数线性函数相融合去模拟一种广义的不完全维修情形下可修系统的失效过程,相应的参数估计和模型应用被详细讨论。

In the practical work,the system cannot be renewedbyrepairing,making it difficult to give the failure process of the system aperfectdescription.In 1989,Kijima proposes a concept related to time and the number of maintenance,which is called virtual life.The use of the concept of virtual lifemade the failure strength determined by the virtual life rather thanthe time of system operation.The basic idea is to simulate failure intensity functionofthe systemby reducing the real operationtime of the system. In the paper,how tocombinethe virtual life the idea and the integration of logarithm linear function to simulate a generalized imperfect maintenance situation of the failure process of the repairable systemis discussed,and the corresponding parameter estimation and model application are discussed in detail.