Robust Molten Steel Level Control in a Strip-casting Process
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概要
- 論文の詳細を見る
A robust molten steel level controller is developed for a strip-casting process by using the quantitative feedback theory (QFT). The plant model for the molten steel level system is first developed as a linear time-invariant system with parametric uncertainties. The parametric uncertainties reflect the uncertain discharge coefficients of the immersion nozzle and the stopper, the uncertain transport delay of the molten steel supply system, and the various hot strip production rate of the strip-casting process. In this paper, the robust stability requirement, reference tracking capability, and disturbance rejection capability at the plant input are specified in terms of the bounds on the magnitude of the closed-loop transfer function. Then the loop shaping technique is used to design a robust QFT controller in such a way that the nominal loop transmission can meet the constraints. The simulation and experimental results show that the performance of the closed-loop system with the proposed controller is better than that with a conventional PID controller.
- 社団法人 日本鉄鋼協会の論文
- 2005-08-15
著者
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Lee D.
Department Of Cytokine Biology The Forsyth Institute
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Kang T.
Department Of Physics Dongguk University
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Lee Jin
Department Of Bioscience And Biotechnology Silla University
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Lee D.
Department Of Electronic And Electrical Engineering Pohang University Of Science And Technology
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Lee Jin
Department Of Electrical Engineering Pohang University Of Science And Technology
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Lee Jin
Department Of Biology Inha University
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Kang T.
Department Of Postrip R&e Project Posco
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LEE Jin
Department of Biochemistry, College of Medicine, Inje University
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Lee Jin
Department of Anatomy and Cell Biology, Collage of Medicine, Hanyang University
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