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Optimization-based feedback control of flatness in a cold tandem rolling

Bemporad, Alberto and Bernardini, Daniele and Cuzzola, Francesco Alessandro and Spinelli, Andrea Optimization-based feedback control of flatness in a cold tandem rolling. Journal of Process Control, 20 (4). pp. 396-407. ISSN 0959-1524 (2010)

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For the problem of automatic flatness control (AFC) in cold tandem mills this paper proposes control techniques based on quadratic optimization and delay compensation. Three different strategies are presented and compared: a centralized solution based on a global quadratic programming (QP) problem that decides the commands to all the actuators, and two decentralized solutions where each actuator command is optimized locally. All schemes are based on a global exchange of information about the commands generated at the previous time step at each stand to compensate for the numerous delays present in the mill. Control algorithms are tested in simulation considering a tandem mill with five stands as a benchmark, and results are shown to demonstrate the performance of the proposed schemes.

Item Type: Article
Identification Number: 10.1016/j.jprocont.2010.02.003
Uncontrolled Keywords: Automatic flatness control; Cold tandem rolling mill; Model predictive control
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Research Area: Computer Science and Applications
Depositing User: Professor Alberto Bemporad
Date Deposited: 07 Jul 2011 13:46
Last Modified: 17 Nov 2011 10:55
URI: http://eprints.imtlucca.it/id/eprint/440

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