Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Feedback Linearization Control of the Looper System in Hot Strip Mills

  • Hwang, I-Cheol (School of Mechatronics Engineering, Dongeui University) ;
  • Kim, Seong-Bae (Department of Mechanical Engineering, Graduated School, Dongeui University)
  • Published : 2003.11.01
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Abstract

This paper studies on the linearization of a looper system in hot strip mills, that plays an important role in regulating a strip tension or a strip width. Nonlinear dynamic equations of the looper system are analytically linearized by a static feedback linearization algorithm with a compensator. The proposed linear model of the looper is validated by a comparison with a linear model using Taylor's series. It is shown that the linear model by static feedback well describes nonlinearities of the looper system than one using Taylor's series. Furthermore, it is shown from the design of an ILQ controller that the linear model by static feedback is very useful in designing a linear controller of the looper system.

Keywords

References

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