Molten steel level controller based on disturbance observer with time-delay compensation

Minsung Kim, Sungwoong Moon, Changheum Na, Byungyong You, Yeongsub Kueon, Dukman Lee, Jookang Lee, Jin S. Lee

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)256-261
Number of pages6
JournalISIJ International
Volume51
Issue number2
DOIs
StatePublished - 2011

Keywords

  • Bulging disturbance
  • Continuous casting
  • Time-delay compensation

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