Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
Multivariable Flatness Control in Multi-High Rolling Mills
Kazuo NOSEYasushi MAEDAMasakazu SHIMOMURAHajime TSUBONO
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1991 Volume 4 Issue 8 Pages 339-346

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Abstract

This paper describes a multivariable algorithm for controlling the flatness of a multi-high rolling mill with actuators of crown control, lateral shift, and tilting rolling. First, the flatness control problem is formulated as a Linear-Quadratic control problem and the control law is derived. Second, to ensure the control constraints are satisfied, a practical flatness control algorithm is proposed. A non-interactive control algorithm is also proposed to compensate for the thickness disturbance caused by the flatness control. Finally, field test results are presented showing the performance of the proposed control algorithms.

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