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Modelling and Resolution of Dynamic Reliability Problems by the Coupling of Simulink and the Stochastic Hybrid Fault Tree Object Oriented (SHyFTOO) Library

机译：通过Simulink和随机混合故障树面向对象（SHyFTOO）库的耦合对动态可靠性问题进行建模和解决

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Dependability assessment is one of the most important activities for the analysis of complex systems. Classical analysis techniques of safety, risk, and dependability, like Fault Tree Analysis or Reliability Block Diagrams, are easy to implement, but they estimate inaccurate dependability results due to their simplified hypotheses that assume the components’ malfunctions to be independent from each other and from the system working conditions. Recent contributions within the umbrella of Dynamic Probabilistic Risk Assessment have shown the potential to improve the accuracy of classical dependability analysis methods. Among them, Stochastic Hybrid Fault Tree Automaton (SHyFTA) is a promising methodology because it can combine a Dynamic Fault Tree model with the physics-based deterministic model of a system process, and it can generate dependability metrics along with performance indicators of the physical variables. This paper presents the Stochastic Hybrid Fault Tree Object Oriented (SHyFTOO), a Matlab ? software library for the modelling and the resolution of a SHyFTA model. One of the novel features discussed in this contribution is the ease of coupling with a Matlab ? Simulink model that facilitates the design of complex system dynamics. To demonstrate the utilization of this software library and the augmented capability of generating further dependability indicators, three different case studies are discussed and solved with a thorough description for the implementation of the corresponding SHyFTA models.
机译：可靠性评估是分析复杂系统的最重要活动之一。安全性，风险和可靠性的经典分析技术（如故障树分析或可靠性框图）易于实施，但是由于简化了假设，即假定组件的故障彼此独立且相互独立，因此它们估计了不准确的可靠性结果。系统的工作条件。在动态概率风险评估的范围内，最近的贡献显示了提高经典可靠性分析方法准确性的潜力。其中，随机混合故障树自动机（SHyFTA）是一种很有前途的方法，因为它可以将动态故障树模型与系统过程的基于物理的确定性模型相结合，并且可以生成可靠性指标以及物理变量的性能指标。本文提出了一种面向随机混合故障树的对象（SHyFTOO），这是一个Matlab？用于SHyFTA模型的建模和解析的软件库。本贡献中讨论的新颖功能之一是与Matlab的耦合容易性。 Simulink模型有助于简化复杂的系统动力学设计。为了演示该软件库的利用和生成进一步可靠性指标的增强功能，对三个不同的案例研究进行了讨论和解决，并对相应的SHyFTA模型的实现进行了详尽的描述。

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