Intelligent Decoupling Control of Gas Collection Process of Multiple Asymmetric Coke Ovens

This paper presents a hierarchical intelligent decoupling control method for the gas collection process of three asymmetric coke ovens of an iron and steel company. The process features strong asymmetric coupling, large disturbances, and strong nonlinearity. These characteristics are exploited in th...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2009-07, Vol.56 (7), p.2782-2792
Main Authors: Min Wu, Min Wu, Jin Yan, Jin Yan, Jin-Hua She, Jin-Hua She, Wei-Hua Cao, Wei-Hua Cao
Format: Article
Language:English
Subjects:
Accumulators
Asymmetric coke ovens
Asymmetry
Coke ovens
Collectors
Control systems
Controllers
Couplings
Decoupling
decoupling control
expert control
feedback control
feedforward control
Fuzzy control
gas collection process
gas pressure
Intelligent control
Iron
Iron and steel industry
multirate sampling
Nonlinearity
Ovens
Pressure control
Sampling methods
Steel
Steel industry
Valves
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Summary:This paper presents a hierarchical intelligent decoupling control method for the gas collection process of three asymmetric coke ovens of an iron and steel company. The process features strong asymmetric coupling, large disturbances, and strong nonlinearity. These characteristics are exploited in the following steps to implement intelligent decoupling control. First, three fuzzy expert controllers and two feedforward controllers stabilize the pressure of each gas collector. Then, the three collectors are divided into two groups based on an analysis of the couplings among them to facilitate decoupling control. An intelligent decoupling control method is used to design intragroup and intergroup decoupling controllers. Finally, expert valve control handles the nonlinearity of butterfly valves, and a multirate sampling strategy further improves the control performance. The results of actual runs show that the system satisfactorily performs the intelligent decoupling control of the gas pressures of the coke ovens, sufficiently suppresses disturbances, and accurately stabilizes the pressures.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2009.2018438