Prediction-based diagnosis and loss prevention using qualitative multi-scale models

Nemeth, E., Lakner, R., Hangos, K. M. and Cameron, I. T. (2007) Prediction-based diagnosis and loss prevention using qualitative multi-scale models. Information Sciences, 177 8: 1916-1930. doi:10.1016/j.ins.2006.10.009

Author Nemeth, E.
Lakner, R.
Hangos, K. M.
Cameron, I. T.
Title Prediction-based diagnosis and loss prevention using qualitative multi-scale models
Journal name Information Sciences   Check publisher's open access policy
ISSN 0020-0255
Publication date 2007
Year available 2007
Sub-type Article (original research)
DOI 10.1016/j.ins.2006.10.009
Volume 177
Issue 8
Start page 1916
End page 1930
Total pages 15
Editor Pedrycz, W.
Place of publication New York
Publisher Elsevier Science Inc
Collection year 2008
Language eng
Subject 091507 Risk Engineering (excl. Earthquake Engineering)
Abstract A prototype prediction based intelligent diagnostic system that is capable of integrating qualitative and quantitative process models and operational experience in the form of HAZOP result tables is proposed in this paper. The diagnostic system utilizes Gensym's real time G2 expert system software. Its diagnostic "cause-effect" rules and possible actions (suggestions) are extracted from the results of standard HAZOP analysis. The knowledge base of the system is organized in a hierarchical way following the hierarchy levels of a multi-scale model of the process system. This supports focusing used by fault detection and loss prevention and thus decomposes the otherwise computationally hard problem. Prediction by simplified dynamic models are used to reduce ambiguity in case of multiple possible causes and/or multiple possible mitigating actions. The system is illustrated on the example of a commercial fertilizer granulator circuit using a simulation test bed. (C) 2006 Elsevier Inc. All rights reserved.
Keyword Computer Science, Information Systems
process systems
multi-scale modelling
systems engineering
HAZOP analysis
Process Fault-detection
Quantitative Model
Medical Diagnosis
Q-Index Code C1
Q-Index Status Confirmed Code

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Created: Mon, 18 Feb 2008, 16:33:49 EST