Application of a new automatic gauge control system for the tandem cold mill

Author

Tezuka, Tomoyuki ; Yamashita, Takashi ; Sato, Takumi ; Abiko, Youji ; Kanai, Tomohiro ; Sawada, Mamoru

Author_Institution

Power & Ind. Syst., Toshiba Corp., Tokyo, Japan

Volume

38

Issue

2

fYear

2002

Firstpage

553

Lastpage

558

Abstract

In July 2000, a new automatic gauge control (AGC) system was successfully installed at the Kakogawa Works, Kobe Steel, Ltd., Hyogo, Japan. The new AGC system consists of two functions: multivariable AGC based on mass flow thickness; and roll eccentricity control. The multivariable AGC is designed using inverse linear quadratic theory, a type of optimal control theory, and controls both thickness and tension. Repetitive control theory is applied to roll eccentricity control as roll eccentricity is a periodic disturbance related to the rotational angle of the rolls. The new AGC system has contributed to improved thickness accuracy and stable rolling. In this paper, details of the new AGC system are described and the application results are shown

Keywords

force control; linear quadratic control; multivariable control systems; process control; rolling mills; steel industry; thickness control; automatic gauge control system; inverse linear quadratic theory; mass flow thickness; multivariable AGC; optimal control theory; repetitive control theory; roll eccentricity control; tandem cold mill; tension control; thickness control; Automatic control; Control systems; Control theory; Fluctuations; Milling machines; Optimal control; Steel; Strips; Thickness control; Weight control;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.993178

Filename

993178