ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
Molten Steel Level Controller Based on Disturbance Observer with Time-delay Compensation
Minsung KimSungwoong MoonChangheum NaByungyong YouYeongsub KueonDukman LeeJookang LeeJin S. Lee
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2011 Volume 51 Issue 2 Pages 256-261


Regulating molten steel level in continuous casting is difficult, because it suffers from various disturbances, among which the bulging disturbance is the most prominent. Moreover, as the casting speed increases in continuous casting, the phase lag due to the system delay increases. In this paper, we propose a disturbance observer with time-delay compensation to eliminate the bulging disturbance in the presence of system delay. We tested the proposed method using a 1 : 1 scale hardware simulator and confirmed that the method successfully decreased the bulging disturbance effect from the molten steel level.

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© 2011 by The Iron and Steel Institute of Japan
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