Results 251 to 260 of about 103,221 (295)

On-Line Fault Diagnosis Using Dynamic Fault Tree

IFAC Proceedings Volumes, 2001
Abstract By incorporating SDG, FTA and fuzzy inference techniques, a novel framework for fault diagnosis is developed in this paper. To relieve the on-line computation load, the scope of diagnosis is limited to the fault origins leading to the top events of given fault trees. The corresponding fault propagation patterns are derived from SOG model and
Sheng Yung Chang, Cheng Ren Lin, Chuei-Tin Chang, Shuh Woei Yu   +3 more
openaire   +1 more source

Dynamic analysis of coherent fault trees

Journal of Quality in Maintenance Engineering, 1998
An important characteristic of many engineering systems which cannot be modeled by fault trees to perform system reliability analysis is that they behave dynamically. In this paper, the method of applying Petri Nets (Pns) as a modeling tool to represent the coherent fault trees is discussed.
Wang Huanqiu, Gao Jinzhong, Xu Fengzhang
openaire   +1 more source

Dynamic Fault Tolerance in Fat Trees

IEEE Transactions on Computers, 2011
Fat trees are a very common communication architecture in current large-scale parallel computers. The probability of failure in these systems increases with the number of components. We present a routing method for deterministically and adaptively routed fat trees, applicable to both distributed and source routing, that is able to handle several ...
F O Sem-Jacobsen, T Skeie, O Lysne, J Duato   +3 more
openaire   +1 more source

Dynamic fault-tree models for fault-tolerant computer systems

IEEE Transactions on Reliability, 1992
Reliability analysis of fault-tolerant computer systems for critical applications is complicated by several factors. Systems designed to achieve high levels of reliability frequently employ high levels of redundancy, dynamic redundancy management, and complex fault and error recovery techniques.
Dugan, Joanne Bechta, Bavuso, Salvatore J., Boyd, Mark A.   +2 more
openaire   +1 more source

Algebraic Modeling for Dynamic Gates in Dynamic Fault Trees

Applied Mechanics and Materials, 2012
This paper proposed a novel algebraic framework for modeling dynamic gates in dynamic fault trees (DFTs). The algebraic modeling of DFTs tries to avoid the ambiguities and inconsistencies of the natural languages-based original definitions. Aim to solve this issue, preliminarily a formal framework is defined, including the definitions, properties ...
Bo Wang, Yi Li, Wei Yan Xing, Dong Liu
openaire   +1 more source

Dynamic Fault Tree Analysis: Simulation Approach

2010
Fault tree analysis (FTA) is extensively used for reliability and safety assessment of complex and critical engineering systems. One of the important limitations of conventional FTA is the inability for one to incorporate complex component interactions such as sequence dependent failures.
K. Durga Rao, V.V.S. Sanyasi Rao, A. K. Verma, A. Srividya   +3 more
openaire   +1 more source

Diagnostic expert systems from dynamic fault trees

Annual Symposium Reliability and Maintainability, 2004 - RAMS, 2004
A methodology for developing a diagnostic map for systems that can be analyzed via a dynamic fault tree is proposed in this paper. This paper shows how to automatically design a diagnostic decision tree from a dynamic fault tree used for reliability analysis.
T. Assaf, J.B. Dugan
openaire   +1 more source

Dynamic Fault Tree Based on Weibull Distribution

Advanced Materials Research, 2011
The fault tree analysis is a widely used method for evaluation of systems reliability and safety. Dynamic fault tree (DFT) extend traditional FT by defining additional gates called dynamic gates to model these complex interactions. Markov models are used in solving dynamic gates. However, state space becomes too large for calculation with Markov models
Wei Gang Guo, Wei Han, Shu Yan Liu
openaire   +1 more source

Modular techniques for dynamic fault tree-analysis

Annual Reliability and Maintainability Symposium 1992 Proceedings, 2003
It is noted that current approaches used to assess the dependability of complex systems such as Space Station Freedom and the Air Traffic Control System are incapable of handling the size and complexity of these highly integrated designs. A novel technique for modeling such systems which is built upon current techniques in Markov theory and ...
F.A. Patterson-Hine, J.B. Dugan
openaire   +1 more source

Effective Static and Dynamic Fault Tree Analysis

2016
Fault trees constitute one of the essential formalisms for static safety analysis of various industrial systems. Dynamic fault trees (DFT) enrich the formalism by support for time-dependent behaviour, e.g., repairs or dynamic dependencies. This enables more realistic and more precise modelling, and can thereby avoid overly pessimistic analysis results.
Bäckström, Ola, Butkova, Yuliya, Hermanns, Holger, Krčál, Jan, Krčál, Pavel   +4 more
openaire   +1 more source