Title :
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
fDate :
4/1/1988 12:00:00 AM
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;
Journal_Title :
Control Systems Magazine, IEEE
