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Reliability analysis of multi-state systems subject to failure mechanism dependence based on a combination method

机译:基于组合方法的失效机制依赖性多状态系统可靠性分析

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摘要

A multi-state system is a kind of system in which both the system and its components may display multiple performance levels, and it can be utilized to model more complicated and practical systems. As one kind of multi-state object, the performance degradation of a system and its components can be analyzed in terms of failure mechanism dependence. Some coupling relationships of these failure mechanisms exhibit multi-state properties as well. This paper merged the primary failure mechanism correlations proposed in our previous research and provided a combinational method that proposes a modified binary decision diagram (BDD) and a multi-state multi-valued decision diagram (MMDD) models for the state-probability evaluation and reliability analysis of the multi-state system. The method consists of four steps: generation of BDD models for components, calculation of state-probability for components, generation of MMDD models for the system and calculation of reliability for the system. As a study case, the reliability and state-probability of a multi-state sensor system are evaluated using this combinational method. Finally, a comparison between the binary-state and the multi-state are given as well.
机译:多状态系统是一种系统,在该系统中,系统及其组件都可以显示多个性能级别,并且可以用来对更加复杂和实用的系统进行建模。作为一种多状态对象,可以根据故障机制的依赖性来分析系统及其组件的性能下降。这些故障机制的某些耦合关系也表现出多状态属性。本文合并了我们先前研究中提出的主要失效机制相关性,并提供了一种组合方法,该方法提出了一种改进的二进制决策图(BDD)和多状态多值决策图(MMDD)模型,用于状态概率评估和可靠性多状态系统分析。该方法包括四个步骤:为组件生成BDD模型,为组件计算状态概率,为系统生成MMDD模型以及为系统计算可靠性。作为研究案例,使用此组合方法评估了多状态传感器系统的可靠性和状态概率。最后,还给出了二进制状态和多状态之间的比较。

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