The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Time Delay-Based Gain Scheduled Control and It's Application to Electromagnetic Suspension System

시간지연 이득계획제어와 자기부상시스템에의 응용

  • 성호경 (기계연구원 자기부상열차사업단) ;
  • 조정민 (기계연구원 자기부상열차사업단) ;
  • 조흥제 (기계연구원 자기부상열차사업단)
  • Published : 2005.12.01
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Abstract

This paper proposes a gain scheduled control technique using time-delay for the nonlinear system with plant uncertainties and unexpected disturbances. The time delay-based gain scheduled control depends on a direct estimation of a function representing the effect of uncertainties. The information from the estimation is used to cancel the unknown dynamics and the unexpected disturbances simultaneously. The proposed estimation scheme with a finite convergence time is formulated in order to estimate the unknown scheduling variable variation. In other words, the time delay-based gain scheduled control uses the past observation of the system's response and the control input to directly modify the control actions rather than to adjust the controller gains or to identify system parameters. It has a simple structure so as to minimize the computational burden. The benefits of this proposed scheme are demonstrated in the simulation of an electromagnetic suspension system with plant uncertainties and external disturbances, and the proposed controller is compared with the conventional state feedback controller.

Keywords

References

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