中文摘要：

针对指数分布条件下基于事后维修的重要度分析问题,采用综合重要度计算方法,提出了典型二态混联系统重要度计算公式,并对失效率和维修率等两个影响重要度分析的指标进行了分析.在假设设备寿命服从指数分布的条件下,基于传统综合重要度计算方法,推导出二态并-串联和串-并联等典型二态混联系统组(部)件综合重要度的等价计算公式.案例分析结果表明:在指数分布条件下的二态劣化混联系统中,组(部)件的综合重要度分别和失效率、维修率成正相关关系.

英文摘要：

In order to investigate the relation between the integrated importance measure (IIM ) and the failure rate and the repair rate ,the IIM of parallel-series and series-parallel systems based on breakdow n maintenance strategy is generalized ,with some properties of the generalized IIM discussed .Under the assumption that the service life of typical system is exponential distribution ,equivalent formulas of IIM are obtained for parallel-series and series-parallel systems .The results show that ,if the service life of a typical system is exponential distribution , the failure rate and repair rate are positively correlated with IIM .