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

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Study on LSDC Design for Coiling Shape Control of Hot Strip Mills

열간압연 권취형상 제어를 위한 LSDC 설계에 관한 연구

  • 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 : 2015.06.25
  • Accepted : 2015.08.03
  • Published : 2015.09.01
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Abstract

We developed an LSDC (Load Shift and Load Distribution Control) technology in order to improve coil quality and productivity by reducing tension fluctuation especially for the tail of the strip in the down coiler in hot strip mills. To adapt the new controller, the torque and speed distribution between the zero pinch roll, pinch roll, and mandrel are needed. The proposed controller is a combination of an LSC to share the tension between the mill stand and the mandrel, and an LDC to shift the torque load from the zero pinch roll to the pinch roll. From the simulation, the proposed controller is verified under the torque disturbance. Using a field test, the torque deviation decreased by nearly 50% through utilization of the LSDC control.

Keywords

References

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