考虑中介状态和失效相关时机械系统的可靠性分析

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  大型机械系统通常具有“安全—中介—失效”三级工作模式。运用条件概率的性质及其运算法则,建立了考虑中介状态的机械系统可靠向量的计算方法和步骤,并充分考虑了各单元的失效相关性。在引入中介状态的情况下,提出合理假设,给出了各种条件概率的近似处理方法,并将三级工作模式的系统可靠性分析转化到二级工作模式下求解,并没有增加问题复杂性。针对串联系统,并联系统和表决系统,做了具体的阐述,并推广到其它的机械系统。最后给出算例,进一步证实了假设的合理性,该方法的可行性。
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