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Design of a combined control system incorporating knowledge based system and model predictive multivariable control system and its application to refining plant

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5 Author(s)
Irizuki, Y. ; Aichi Refinery, Idemitsu Kosan Co. Ltd., Aichi, Japan ; Suzuki, K. ; Murata, S. ; Uno, H.
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This paper describes the implementation of the combined control system incorporating a knowledge based control system and a model predictive multivariable control system in a petroleum plant. The knowledge based control system is used to determine set points for the temperature of the reflux to regulatory controllers using `if then' type rules based on skilled operators' know-how. The model predictive multivariable control system controls the flow rate of each reflux which is difficult for operators to control because of the large time-delay and interference among those manipulated variables. The implemented combined control system showed a satisfactory performance in controlling the pressure of the actual plant

Published in:

Knowledge-Based Intelligent Electronic Systems, 1998. Proceedings KES '98. 1998 Second International Conference on  (Volume:2 )

Date of Conference:

21-23 Apr 1998