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Reliability optimization of a redundant system with failure dependencies

机译：具有故障依赖性的冗余系统的可靠性优化

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In a multi-component system, the failure of one component can reduce the system reliability in two aspects: loss of the reliability contribution of this failed component, and the reconfiguration of the system, e.g., the redistribution of the system loading. The system reconfiguration can be triggered by the component failures as well as by adding redundancies. Hence, dependency is essential for the design of a multi-component system.In this paper, we study the design of a redundant system with the consideration of a specific kind of failure dependency, i.e., the redundant dependency. The dependence function is introduced to quantify the redundant dependency. With the dependence function, the redundant dependencies are further classified as independence, weak, linear, and strong dependencies. In addition, this classification is useful in that it facilitates the optimization resolution of the system design. Finally, an example is presented to illustrate the concept of redundant dependency and its application in system design. This paper thus conveys the significance of failure dependencies in the reliability optimization of systems.
机译：在多组件系统中，一个组件的故障会在两个方面降低系统可靠性：该故障组件的可靠性贡献的损失，以及系统的重新配置，例如系统负载的重新分配。组件故障以及添加冗余都可以触发系统重新配置。因此，依赖关系对于多组件系统的设计至关重要。在本文中，我们考虑了特定类型的故障依赖关系（即冗余依赖关系）来研究冗余系统的设计。引入依赖性函数以量化冗余依赖性。使用依赖性函数，冗余依赖性进一步分为独立性，弱依赖性，线性依赖性和强依赖性。另外，这种分类很有用，因为它有助于系统设计的优化解析。最后，给出一个例子来说明冗余依赖的概念及其在系统设计中的应用。因此，本文传达了故障依赖性在系统可靠性优化中的重要性。

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