Title :
Stabilization of the molten steel level in the mold of a continuous casting machine by means of vacuum
Author :
Barron, Miguel A. ; Aguilar, Ricardo ; González, Jesus
Author_Institution :
Dept. de Mater., Univ. Autonoma Metropolitana, Mexico City, Mexico
Abstract :
A MIMO model-based controller to stabilize the molten steel level in the mold and the tundish in a one-strand continuous casting machine is developed; to stabilize the mold level the pressure in the vacuum chamber of the tundish is employed as control input, while to stabilize the tundish level the position of the slide-gate valve of the ladle is utilized as control input. Given the nonlinear relationship between the pressure and the outlet flow from the tundish nozzle, a simple linear link between the aforementioned variables is assumed in order that the feedback linearizing technique can be applied. Numerical simulations show the good dynamic performance of the controller proposed, corroborating the viability of the vacuum technique to regulate the level of molten steel in the mold
Keywords :
MIMO systems; casting; feedback; level control; linearisation techniques; stability; steel industry; MIMO model-based controller; continuous casting machine mold; control input; dynamic performance; feedback linearizing technique; ladle slide-gate valve position; molten steel level stabilisation; nonlinear relationship; one-strand continuous casting machine; outlet flow; tundish nozzle; vacuum chamber pressure; Artificial intelligence; Casting; Elementary particle vacuum; Feedback; MIMO; Mathematical model; Pressure control; Steel; Vacuum technology; Valves;
Conference_Titel :
Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5589-X
DOI :
10.1109/IAS.1999.800011
