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

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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CFWC Scheme for Width Control using CCD Measurement System and Fuzzy PID Controller in Hot Strip Mills

CCD 폭 측정 시스템 및 퍼지 PID를 이용한 CFWC 제어기 설계

  • Park, Cheol Jae (School of Mechanical and Automotive Engineering, Daegu University)
  • 박철재 (대구대학교 기계자동차공학부)
  • Received : 2013.08.20
  • Accepted : 2013.10.04
  • Published : 2013.11.01
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Abstract

In this paper, we propose a CFWC (CCD and fuzzy PID based width control) scheme to obtain the desired delivery width margin of a vertical rolling mill in hot strip process. A WMS(width measurement system) is composed of two line scan cameras, an edge detection algorithm, a glitch filter, and so on. A dynamic model of the mill is derived from a gauge meter equation in order to design the fuzzy PID controller. The controller is a self-learning structure to select the PID gains from the error and error rate of the width margin. The effectiveness of the proposed CFWC is verified from simulation results under a width disturbance of the entry in the mill. Using a field test, we show that the performance of the width control is improved by the proposed control scheme.

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References

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