Robust mould level control

In the first years of production since 2000, the caster of the Direct Sheet Plant in Umuiden experienced unstable oscillations in the control of the mould level. This paper reports on the research that was conducted to find the cause of and solution for this problem. For that purpose, a 1:1 scale wa...

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Main Authors: Schuurmans, J., Kamperman, A., Middel, B., van den Bosch, P.F.A.
Format: Conference Proceeding
Language:English
Subjects:
Casting
Digital signal processing
Fluctuations
Furnaces
Level control
Production
Robust control
Steel
Strips
Surface waves
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Kamperman, A.
Middel, B.
van den Bosch, P.F.A.
description In the first years of production since 2000, the caster of the Direct Sheet Plant in Umuiden experienced unstable oscillations in the control of the mould level. This paper reports on the research that was conducted to find the cause of and solution for this problem. For that purpose, a 1:1 scale water model was used. From this scale model, it appeared that the oscillations were due to surface waves induced by stopper movements. To model the effect of the surface waves, a simple standard simulation mould level model was extended by a heuristic wave model. Using this model, a robust stable mould level controller was designed. This new controller has proven to be successful since its implementation in 2002.
doi_str_mv 10.1109/ACC.2005.1470270
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Casting
Digital signal processing
Fluctuations
Furnaces
Level control
Production
Robust control
Steel
Strips
Surface waves
title Robust mould level control
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