Automated risk estimation based on fault trees and fuzzy probabilites

Laengst, Wolfgang; Lapp, Andreas; Stuebbe, Kathrin; Schirmer, Juergen; Kraft, Dieter; Kiencke, Uwe

doi:10.1016/s1474-6670(17)36469-8

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Fault Tree Fundamentals1

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2005

2006

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Cited by 3 publications

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“…calculation of minimal cut sets) as well as quantitative estimation of system unavailability from probabilities of basic events. Methods for automatic construction of fault trees are described in (Papadopoulos et al, 2001) and (Laengst et al, 2003).…”

Section: Fault Tree Fundamentalsmentioning

confidence: 99%

Including Systematic Faults Into Fault Tree Analysis

Santiago

Faure

Papadopoulos

2006

IFAC Proceedings Volumes

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Fault Tree Analysis (FTA) is a technique widely used for fault forecasting of physical systems. Although FTA is considered a well established safety analysis technique, paradoxically classical Fault Trees include only random faults. However, in modern automated systems, undesirable events arise not only from random hardware faults but also from defects in the logic of software controllers that control the physical system. Faults generated by these software controllers are systematic faults caused by coding errors or misinterpretations of control requirements. This paper proposes an extension to the basic Fault Trees construction process which takes into account this category of faults and advocates the use of dynamic and temporal gates to model it.

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Section: Fault Tree Fundamentalsmentioning

confidence: 99%