Journal ArticleDOI
Multi-signal flow graphs: a novel approach for system testability analysis and fault diagnosis
Somnath Deb,Krishna R. Pattipati,V. Raghavan,Mojdeh Shakeri,R. Shrestha +4 more
- Vol. 10, Iss: 5, pp 14-25
TLDR
This paper presents a comprehensive methodology for a formal, but intuitive, cause-effect dependency modeling using multi-signal directed graphs that correspond closely to hierarchical system schematics and develop diagnostic strategies to isolate faults without making the unrealistic single fault assumption.Abstract:
In this paper, we present a comprehensive methodology for a formal, but intuitive, cause-effect dependency modeling using multi-signal directed graphs that correspond closely to hierarchical system schematics and develop diagnostic strategies to isolate faults in the shortest possible time without making the unrealistic single fault assumption A key feature of our methodology is that our models lend naturally to real-world necessities, such as system integration and hierarchical troubleshooting >read more
Citations
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Journal ArticleDOI
A Graph-Based Fault Identification and Propagation Framework for Functional Design of Complex Systems
Tolga Kurtoglu,Irem Y. Tumer +1 more
TL;DR: The FFIP framework is introduced as a novel approach for evaluating and assessing functional-failure risk of physical systems during conceptual design and provides the designers and system engineers with a means of designing out functional failures where possible and designing in the capability to detect and mitigate failures early in the design process.
Journal ArticleDOI
A Formal Analysis of Fault Diagnosis with D-matrices
TL;DR: A theoretical assessment of the representation power of the D-matrix is provided and a surprising result relative to the difficulty of generating optimal diagnostic strategies from D-Matrices is proved.
Journal ArticleDOI
Sequential testing algorithms for multiple fault diagnosis
TL;DR: This work considers the problem of constructing optimal and near-optimal test sequences for multiple fault diagnosis and presents novel diagnostic strategies that generate a diagnostic directed graph, instead of a traditional diagnostic tree, for several fault diagnosis.
Journal ArticleDOI
A functional failure reasoning methodology for evaluation of conceptual system architectures
TL;DR: A new methodology for reasoning about the functional failures during early design of complex systems based on the notion that a failure happens when a functional element in the system does not perform its intended task is introduced.
Proceedings ArticleDOI
Model-based prognostic techniques [maintenance applications]
TL;DR: An integrated prognostic process based on data collected from model-based simulations under nominal and degraded conditions is developed, which has the potential to be applicable to a variety of systems, ranging from automobiles to aerospace systems.
References
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