Use of advanced control with virtual rolling to improve the control of the threading of the tandem hot metal strip mill

Abstract

Previously our work has investigated the use of a state dependent Riccati equation (SDRE) based method for the control of a fully threaded tandem hot metal strip mill, with highly successful results. We present in this paper the results of further work wherein the SDRE method is combined with a virtual processing technique to greatly simplify the control of the threading phase of the tandem hot strip mill. This initial work also has been highly successful, with a strong potential for extension to other industrial process.