DocumentCode :
1377547
Title :
Regulation of the mold level using a vacuum in a steel continuous casting process
Author :
Barron, M.A. ; Aguilar, R. ; Gonzàlez, J.
Author_Institution :
Dept. de Mater., Univ. Autonoma Metropolitana, Mexico
Volume :
147
Issue :
4
fYear :
2000
fDate :
7/1/2000 12:00:00 AM
Firstpage :
416
Lastpage :
420
Abstract :
A control scheme is proposed to regulate the level of molten steel in the mold of a continuous casting process in which the pressure in the vacuum chamber of the tundish is employed as control input. When the feedback linearising technique is employed, it yields an unusual control law, in which the link between the time derivative of the mold level and the output error is not linear; in this case, the asymptotic stability of the system is not guaranteed. To ensure asymptotic stability, the correctness of the control law is analysed and a modified control law proposed. Numerical simulations show the adequacy of the dynamic performance of the modified control law, and that is feasible to extend the feedback linearisation technique to design controllers for a certain class of nonlinear systems
Keywords :
asymptotic stability; casting; feedback; level control; linearisation techniques; nonlinear systems; process control; steel industry; asymptotic stability; continuous casting process; feedback; level control; linearisation technique; molten steel; nonlinear systems; process control; steel industry; tundish; vacuum chamber;
fLanguage :
English
Journal_Title :
Control Theory and Applications, IEE Proceedings -
Publisher :
iet
ISSN :
1350-2379
Type :
jour
DOI :
10.1049/ip-cta:20000256
Filename :
866925
Link To Document :
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