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

The Korean Institute of Electrical Engineers (대한전기학회)
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Design of a Reduced-Order Disturbance Observer Controller for EMS System with Mass Uncertainty

무게변동을 고려한 자기부상시스템의 저차 외란관측기 제어기 설계

  • Jo, Nam-Hoon (Dept. of Electrical Engineering, Soongsil Univerity)
  • Received : 2017.02.13
  • Accepted : 2017.04.14
  • Published : 2017.05.01
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Abstract

In this paper, we design a reduced-order disturbance observer (DOB) controller for an EMS (Electro-Magnetic Suspension) system with mass uncertainty. Compared with conventional DOB controller, the proposed reduced-order DOB controller can be implemented in a simpler way, since it uses reduced order nominal model and Q-filter. It is shown that the nominal model for the proposed DOB controller should be carefully chosen in order to achieve the robust stability in the present of mass uncertainty. Computer simulation results to validate the effectiveness of the proposed DOB controller are included.

Keywords

Acknowledgement

Supported by : 한국에너지기술평가원(KETEP), 한국연구재단

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