The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Control of Electromagnetic Levitation System using ε-scaling Partial State Feedback Controller

ε조절 요소를 가진 부분 상태 궤환 제어기를 이용한 자기부상 시스템의 제어

  • 박규만 (동아대학교 공과대학 전기공학과) ;
  • 최호림 (동아대학교 전기공학과)
  • Received : 2011.05.25
  • Accepted : 2011.07.07
  • Published : 2011.08.01
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Abstract

The electromagnetic levitation(EMS) system is one of the well-known nonlinear system because of its nonlinearity and several control techniques have been proposed. We propose an ${\epsilon}$-scaling partial feedback controller for the ball position control of the EMS system. The key feature of our proposed controller is the use of the scaling factor ${\epsilon}$ which provides a function of controller gain tuning along with robustness. In this paper, we show the stability analysis of our proposed controller and the convergence analysis of the state observer in terms of ${\epsilon}$-scaling factor. In addition, the experimental results show the validity of the proposed controller and improved control performance over the conventional PID controller.

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References

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