Hot strip mill tension–looper control based on decentralization and coordination

Since tension and looper control is the key to successful operations in the hot strip finishing mill, several multivariable controllers have been applied. However, this leads to complicated controllers, which are hard to tune on site. This paper presents a new control method based on decentralizatio...

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Bibliographic Details
Published inControl engineering practice Vol. 8; no. 3; pp. 337 - 344
Main Authors Asano, Kazuya, Yamamoto, Kazuhiro, Kawase, Takashi, Nomura, Nobuaki
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.03.2000
Subjects
Automatic process control
Co-ordination
Control schemes
Control system analysis
Decentralized control
Impedance control
Industrial control
Interaction
Steel industry
Structured singular value
Control system analysis
Industrial control
Decentralized control
Impedance control
Steel industry
Interaction
Automatic process control
Control schemes
Co-ordination
Structured singular value
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Summary:Since tension and looper control is the key to successful operations in the hot strip finishing mill, several multivariable controllers have been applied. However, this leads to complicated controllers, which are hard to tune on site. This paper presents a new control method based on decentralization and coordination. First, interactions between tension and the looper are evaluated to ensure the applicability of decentralized control. Then, a decentralized controller based on the two-degree-of-freedom Internal Model Control (IMC) structure is applied. Moreover, impedance control is introduced to retrieve the coordinated action of the looper. The control scheme enables stepwise commissioning of control systems, which is very helpful for on-line tuning.
ISSN:0967-0661
1873-6939
DOI:10.1016/S0967-0661(99)00186-0