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

Volume

2

fYear

1998

fDate

21-23 Apr 1998

Firstpage

26

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/KES.1998.725889

Filename

725889