Application of modern control to a continuous anneal line

Author

Kelly, Christopher D. ; Watanapongse, Dhani ; Gaskey, Kenneth M.

Author_Institution

Inland Steel Co., East Chicago, IL, USA

Volume

8

Issue

2

fYear

1988

fDate

4/1/1988 12:00:00 AM

Firstpage

32

Lastpage

37

Abstract

A state-variable design approach is developed to control strip temperature in a continuous anneal process producing a variety of high-strength low-alloy steels. In this process, a steel strip passes continuously through five consecutive heat-treating operations to achieve desired metallurgical properties for the automotive industry market. Each operation is controlled by an individual controller designed to maintain the tight strip temperatures required for the product mix. Linear quadratic Gaussian control techniques are used to develop the control system.<>

Keywords

annealing; control system synthesis; optimal control; state-space methods; steel industry; temperature control; automotive industry; continuous anneal line; control design; heat-treating operations; high-strength low-alloy steels; linear quadratic Gaussian control; metallurgical properties; optimal control; state-variable design; steel strip; strip temperature; Aging; Annealing; Automotive engineering; Control systems; Furnaces; Heating; Steel; Strips; Temperature control; Temperature measurement;

fLanguage

English

Journal_Title

Control Systems Magazine, IEEE

Publisher

ieee

ISSN

0272-1708

Type

jour

DOI

10.1109/37.1871

Filename

1871