Title: Intelligent integrated control of combustion process of coke oven based on determination of operating state

Authors: Min Wu, Qi Lei, Wei-Hua Cao, Jin-Hua She

Addresses: School of Information Science and Engineering, Central South University, Changsha, Hunan, 410083, China. ' School of Information Science and Engineering, Central South University, Changsha, Hunan, 410083, China. ' School of Information Science and Engineering, Central South University, Changsha, Hunan, 410083, China. ' School of Computer Science, Tokyo University of Technology, Tokyo, 192-0982, Japan

Abstract: This paper describes a hierarchical intelligent integrated control system with three layers: a decision layer, a temperature optimisation and control layer, and a process control layer. An information fusion method is used in the decision layer to determine the operating state of the combustion process in real time. The control strategy includes the temperature optimisation control and process control. The parameters of fuzzy controllers are tuned by a multiple-objective optimisation method with an adaptive genetic algorithm to keep the temperature in the proper range. An intelligent method that combines fuzzy and expert control keeps the gas flow rate and air suction power at the settings.

Keywords: coke oven temperature; operating state; combustion; hybrid systems; fuzzy control; expert control; intelligent control; integrated control; two-stage decisions; parameter optimisation; self-adaptive genetic algorithms; GAs; process control; gas flow rate; air suction power.

DOI: 10.1504/IJSCC.2008.021122

International Journal of Systems, Control and Communications, 2008 Vol.1 No.2, pp.193 - 214

Published online: 04 Nov 2008 *

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