Title :
Design of a combined control system incorporating knowledge based system and model predictive multivariable control system and its application to refining plant
Author :
Irizuki, Yasuharu ; Suzuki, Kazuhiro ; Murata, Shinji ; Uno, Hiroyuki ; Tan, Te
Author_Institution :
Aichi Refinery, Idemitsu Kosan Co. Ltd., Aichi, Japan
Abstract :
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
Keywords :
knowledge based systems; multivariable control systems; oil refining; predictive control; process control; temperature control; three-term control; PID control; knowledge based system; model predictive control; multivariable control system; petroleum plant; process control; refining plant; reflux; set point control; temperature control; Automatic control; Control system synthesis; Control systems; Inductors; Interference; Knowledge based systems; Petroleum; Predictive models; Pressure control; Refining;
Conference_Titel :
Knowledge-Based Intelligent Electronic Systems, 1998. Proceedings KES '98. 1998 Second International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-4316-6
DOI :
10.1109/KES.1998.725889
