ENHANCED CAUSAL DIGRAPH REASONING FOR FAULT DIAGNOSIS WITH APPLICATION ON THE PAPER MACHINE SHORT CIRCULATION PROCESS

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Date
2007
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Mcode
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Language
en
Pages
136-141
Series
14th Nordic Process Control Workshop, Espoo, Finland, 23rd-25th August 2007
Abstract
This paper presents an enhanced dynamic causal digraph reasoning method for fault diagnosis and its application to the short circulation process of a paper machine. In order to improve the isolation capability of the original method, an inference mechanism between the arcs of the graph is proposed to locate process faults on the arcs. Application of the proposed method to the paper machine short circulation process is presented at the end of the paper. The results show that the proposed method is able to identify the responsible arcs when the system is affected by a process fault.
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Keywords
Causal Digraph, Kalman filter, APROS, CUSUM method, Paper Machine, Causal Digraph, Paper Machine, CUSUM
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Citation
Cheng , H , Nikus , M & Jämsä-Jounela , S-L 2007 , ENHANCED CAUSAL DIGRAPH REASONING FOR FAULT DIAGNOSIS WITH APPLICATION ON THE PAPER MACHINE SHORT CIRCULATION PROCESS . in S-L Jämsä-Jounela (ed.) , 14th Nordic Process Control Workshop, Espoo, Finland, 23rd-25th August 2007 . Espoo , pp. 136-141 .