Journal ArticleDOI
Qualitative simulation of chemical process systems: Steady‐state analysis
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TLDR
In this paper, the mauvais fonctionnement and l'effet des erreurs se propagent par causalite d'une variable a l'autre, en satisfaisant finalement les contraintes du procede en regime permanent.Abstract:
Dans une analyse qualitative le mauvais fonctionnement et l'effet des erreurs se propagent par causalite d'une variable a l'autre, en satisfaisant finalement les contraintes du procede en regime permanent. Les contraintes des series d'equations algebriques, sont representees par des equations de confluence stationnaires. La causalite est representee par le graphe oriente signe etendu (Extended Signed Directed Graph: ESDG)read more
Citations
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Journal ArticleDOI
Diagnosis of process faults with neural networks and principal component analysis
TL;DR: Principal component analysis (PCA) is investigated in this paper for generating a reduced number of variables to be used as neural network inputs for fault diagnosis in industrial plants.
Book ChapterDOI
Qualitative Fault Detection and Hazard Analysis Based on Signed Directed Graphs for Large-Scale Complex Systems
TL;DR: With development of the computer-aided technology, graph theory has been implemented successfully by some graph editors, some of which, like Graphviz (2009), can transform text description into graphs easily, and the SDG technology can be easily combined with the other design, analysis and management tools.
Journal ArticleDOI
Hazard analysis and support tool for computer controlled processes
Shuang-Hua Yang,Paul W. H. Chung +1 more
TL;DR: A hazard analysis framework for computer controlled processes is presented and a novel modelling representation termed a Process Control Event Diagram (PCED) is described and used to express the control logic and its effect on the process.
Dissertation
Expert systems in on-line process control and fault diagnosis
TL;DR: Several on-line expert systems, including a rule based controller and several fault diagnosis systems, have been developed in this research and are reported in this thesis.