Prime implicants for modularised non-coherent fault trees using binary decision diagrams
by Rasa Remenyte-Prescott, John D. Andrews
International Journal of Reliability and Safety (IJRS), Vol. 1, No. 4, 2007

Abstract: This paper presents an extended strategy for the analysis of complex fault trees. The method uses simplification rules, which are applied to the fault tree to reduce it to a series of smaller subtrees, whose solution is equivalent to the original fault tree. The smaller subtree units are less sensitive to the basic event ordering during Binary Decision Diagram (BDD) conversion. BDDs are constructed for every subtree. Qualitative analysis is performed on the set of BDDs to obtain the prime implicant sets for the original top event. It is shown how to extract the prime implicant sets from complex and modular events in order to obtain the prime implicant sets of the original fault tree in terms of basic events.

Online publication date: Thu, 13-Dec-2007

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