Control of mold level in continuous casting based on a disturbance observer

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

Research output: Contribution to journalArticlepeer-review

11 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. To eliminate the bulging disturbance in the presence of system delay, we propose an adaptive sine estimator based disturbance observer and a phase lead adaptive fuzzy controller. 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)1022-1029
Number of pages8
JournalJournal of Process Control
Volume21
Issue number7
DOIs
StatePublished - Aug 2011

Keywords

  • Adaptive fuzzy controller
  • Adaptive sine estimator
  • Bulging disturbance
  • Continuous casting
  • Time-delay compensation

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