Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Design of LTBC Controller for Tension Control in Down Coiler Process of Hot Strip Mills

열간압연 권취공정의 장력제어를 위한 LTBC 제어기 설계

  • Lee, Sang Ho (Technical Research Lab., POSCO) ;
  • Park, Hong Bae (School of Electronics Engineering, Kyungpook National University) ;
  • Park, Cheol Jae (School of Mechanical and Automotive Engineering, Daegu University)
  • 이상호 (포스코 기술연구원) ;
  • 박홍배 (경북대학교 전자공학부) ;
  • 박철재 (대구대학교 기계자동차공학부)
  • Received : 2014.12.31
  • Accepted : 2015.01.22
  • Published : 2015.04.01
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Abstract

In this paper, we propose an LTBC (Low Tension and Load Balance Control) scheme to improve a coiling shape control by reduction the tension fluctuation by the torque disturbance in the down coiler process of hot strip mills. The proposed controller is a combination of an LTC to control the overload at load-on in the mandrel and an LBC to regulate the load balance of the upper and bottom pinch roll. A tension calculation model is suggested with the concept of the tension deviation. The effectiveness of the proposed control scheme is verified from simulation under a disturbance of the pinch roll torque. Using a field test, we show that the performance of the shape and tension control is improved by the LTBC control.

Keywords

References

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