A novel layered approach to evaluate reliability of complex systems

Carnevali, Laura; Ciani, Lorenzo; Fantechi, Alessandro; Papini, Marco

doi:10.1109/rtsi.2019.8895568

Cited by 4 publications

(2 citation statements)

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“…Our aim is to support the layered approach presented in [28,29], where RBDs are adopted to model major transitions of system structure (e.g., in a reconfiguration), while the finer modeling of the lower levels is based on STPNs and GSPNs. Our goal consists of the definition of a predictive diagnostics approach for the health assessment of complex systems.…”

Section: Context and Motivationmentioning

confidence: 99%

“…Both Dynamic RBD (DRBD) [23,24] and Dynamic FT (DFT) [25][26][27] are hybrid models, since they combine CTMC [13] evaluation with, respectively, RBD [6] and FT [8] quantitative analysis. Hierarchical models, i.e., models that combine the usage of different formalisms in order to analyze the system at different levels, have been proposed in order to both exploit the benefits and to limit the drawbacks of combinatorial and state-space based models [3,28,29].…”

Section: Introductionmentioning

confidence: 99%

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An Efficient Library for Reliability Block Diagram Evaluation

et al. 2021

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Reliability Block Diagrams (RBDs) are widely used in reliability engineering to model how the system reliability depends on the reliability of components or subsystems. In this paper, we present librbd, a C library providing a generic, efficient and open-source solution for time-dependent reliability evaluation of RBDs. The library has been developed as a part of a project for reliability evaluation of complex systems through a layered approach, combining different modeling formalisms and solution techniques at different system levels. The library achieves accuracy and efficiency comparable to, and mostly better than, those of other well-established tools, and it is well designed so that it can be easily used by other libraries and tools.

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Section: Context and Motivationmentioning

confidence: 99%