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

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Controller Design for EMS System using Disturbance Observer

외란관측기를 이용한 자기부상시스템의 제어기 설계에 관한 연구

  • Kang, Nam-Sook (Dept. of Electrical Engineering, Soongsil University) ;
  • Jo, Nam-Hoon (Dept. of Electrical Engineering, Soongsil University)
  • Received : 2013.08.13
  • Accepted : 2013.08.30
  • Published : 2013.09.01
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Abstract

In this paper, we study a disturbance observer (DOB) based controller for an EMS(Electro-Magnetic Suspension) system in presence of mass uncertainty and input disturbance. The DOB based controller is employed in order to compensate the modeling uncertainty and attenuate disturbance signals. For the design of DOB based controller, the Jacobain linearization of nonlinear system model equation is used. Computer simulation is carried out for nonlinear model in order to compare the performance of the proposed DOB controller with that of the conventional PID controller. The simulation results show that the substantial improvement in the performance can be achieved by the proposed DOB controller.

Keywords

Acknowledgement

Supported by : 한국연구재단

References

  1. D. Cho, Y. Kato, and D. Spilman, "Sliding mode and classical control magnetic levitations systems," IEEE Control Systems Magazine, vol. 13, pp. 42-48, Feb. 1993. https://doi.org/10.1109/37.184792
  2. A. E. Hajjaji and M. Ouladsine, "Modeling and nonlinear control of magnetic levitation systems," IEEE Transactions on industrial Electronics, vol. 48, no. 4, pp. 831-838, Aug. 2001. https://doi.org/10.1109/41.937416
  3. Z. J. Yang, Y. Fukushima, S. Kanae, and K. Wada, "Adaptive robust output-feedback control of a magnetic levitation system by k-filter approach," IEEE Trans. Industrial, vol. 55, no. 1, pp. 390-399, Jan. 2008. https://doi.org/10.1109/TIE.2007.896488
  4. Y. Park, M. R. Nam, I. H. Seo, S. H. Lee, J. T. Lim, and M.-J. Tahk, "Least squares based PID control of an electromagnetic suspension system," KSAS Int. Journal, vol. 4, no. 2, pp. 69-78, 2003.
  5. B. Shin, W. Kim, D. Kim, J. Paik, and H. Kang, "On commercialization business of city type magnetic levitation train," Journal of railway, vol. 14, no. 2, pp. 26-32, 2011.
  6. Quanser, Maglev user manuals, 2008.
  7. Y. Choi, K. Yang, W.K. Chung, H.R. Kim, and I.H. Suh, "On the robustness and performance of disturbance observers for second-order systems," IEEE Trans. Automat. Contr., vol. 48, pp. 315-320, 2003 https://doi.org/10.1109/TAC.2002.808491
  8. M.T. White, M. Tomizuka, and C. Smith, "Improved track following in magnetic disk drives using a disturbance observer," IEEE/ASME Trans. Mechatronics, vol. 2, pp. 63-76, 1997 https://doi.org/10.1109/3516.588624
  9. H. Shim, and Nam H. Jo, "An Almost Necessary and Sufficient Conditions for Robust Stability of Closed-loop Systems with Disturbance Observer", Automatica, Vol. 45, No. 1, pp. 296-299, Jan., 2009. https://doi.org/10.1016/j.automatica.2008.10.009