New steering control in a Hot Strip Mill

Jamal Daafouz (1) , Rémi Bonidal (2) , Claude Iung (1) , Patrick Szczepanski (2) , Nils Naumann (2) , Uwe Koschack (2)

1 CRAN - Centre de Recherche en Automatique de Nancy
2 ArcelorMittal

A new controller for finishing mill strip off-centering has been developed in ArcelorMittal Eisenhüttenstadt HSM in cooperation with Arcelor Research and the CRAN automation laboratory. It is an innovative multivariate controller using direct strip off-centering measurements by camera. The steering control of the body part has already been successfully tested with more than 60% of lateral movement reduction and a decrease in the standard deviation of the wedge. The controller for the dethreading phase will be tested in long-term trials, with the aim of cutting in half the number of tail-end crashes. First tests have already given very good results.

Mots clés: Hot mill; Multivariable control; LQG control; Singular perturbations; Process control

Jamal Daafouz, Rémi Bonidal, Claude Iung, Patrick Szczepanski, Nils Naumann, et al.. New steering control in a Hot Strip Mill. The Iron and Steel Technology Conference and Exposition, AISTech 2008, May 2008, Pittsburgh, PA, United States. pp.CDROM. ⟨hal-00323932⟩