Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Looper-Tension Control of Strip Top-Tail Parts for Hot Rolling Mills

열간압연공정의 스트립 선미단부 루퍼-장력 제어

  • Hwang, I-Cheol (Department of Mechatronics Engineering, Dongeui University)
  • 황이철 (동의대학교 메카트로닉스공학과)
  • Received : 2015.03.23
  • Accepted : 2015.06.04
  • Published : 2015.08.31
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Abstract

This paper designs a looper-tension controller for strip top-tail parts in hot strip finishing mills. A three-degree linear model of the looper-tension system is derived by a Taylor's linearization method, where the actuator's dynamics are ignored because of their fast responses. A feedforward shaping controller for the strip top part and a feedforward model reference controller for the strip tail part are respectively designed, they are combined with an ILQ(Inverse Linear Quadratic optimal control) feedback controller for the strip middle part. It is shown from by a computer simulation that the proposed controller is very effective to the strip top-tail parts including the middle part.

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References

  1. I. C. Hwang, 2009, "Development of a looper-tension control technology for hot strip finishing mills", Research Report of POSCO.
  2. Yuki Kuroe, Hiroshi Abe and Takao Fujii, 1996, "ILQ Design Method for Optimal Servo Systems with Generalized Reference Inputs", Trans. of the Society of Instrument and Control Engineers(SICE), Vol. 32, No. 4, pp. 539-546. https://doi.org/10.9746/sicetr1965.32.539
  3. H. Imanari, Y. Morimatsu, K. Sekiguchi, H. Ezure, R. Matuoka, A. Tokuda and H. Otobe, 1997, "Looper H-Infinity Control for Hot-Strip Mills", IEEE Transactions on Industry Applications, Vol. 33, No. 3, pp. 790-796. https://doi.org/10.1109/28.585871
  4. N. Suda, 1994, PID Control, Jochang, pp.74-106.
  5. S. Kunimatsu, M. Fujii and T. Fujii, 2004, "Analysis and Synthesis of Model Reference ILQ Servo System with Tracking Robustness", Trans. of the System, Control and Information, Vol. 17, No. 3. pp. 22-27.