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

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Design of an LMI- Based H^{\infty} Servo Controller for Tandem Cold Mill

LMI 에 기초한 연속 냉간압연기의 H^{\infty} 서보 제어기 설계

  • Kim, In-Soo ;
  • Hwang, I-Cheol (Dept.of Machanicals Industry System Engineering, Dongeui University ) ;
  • Lee, Man-Hyung (Sheet Products Process Research Group, Dept.of Mechanical Engineering, Busan National University)
  • 김인수 (부산대 지능기계공학과) ;
  • 황이철 (동의대학교 기계산업시스템공학부) ;
  • 이만형 (부산대 기계공학부, 정밀정형 및 금형가공연구소)
  • Published : 2000.01.01
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Abstract

In this paper, we design a H^\infty servo controller for gauge control of tandem cold mill. To improve the performance of the AGC(Aotomatic Gauge Control) system based on the Taylor linearized model of tandem cold mill, the H^\infty servo controller is designed to satisfy robust stability, disturbance attenuation and robust tracking properties. The H^\infty servo controller problem is modified as an usual H^\infty control problem, and the solvability condition of the H^\infty servo problem depends on the solvability of the modified H^\infty control problem. Since this modified problem does not satisfied standard assumptions for the H^\infty control problem, it is solved by an LMI(Linear Matrix Inequality) technique. Consequently, the comparison between the H^\infty servo controller and the existing PID/FF(FeedForward) controller shows the usefulness of this study.

Keywords

References

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