The Transactions of the Korean Institute of Electrical Engineers D (대한전기학회논문지:시스템및제어부문D)

The Korean Institute of Electrical Engineers (대한전기학회)
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Design of a Neuro Observer for Reduction of Estimate Error

추정오차 저감을 위한 뉴로 관측기 설계

  • Published : 2005.05.01
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Abstract

The state observer is being used widely because it has the advantage of the guarantee of reliability on financial problem, over heating, and physical shock. However, an Luenberger observer and a Sliding observer have such problems that an experimenter needs to know dynamics and parameters of the system. And also, the high gain observer has such a problem that it has transient state at the beginning of the observation. In this paper, the Neuro observer is proposed to improve these problems. The proposed Neuro observer complement a problem that occur from increase of gain of High-gain observer in proportion to the square number of observable state variables. And also, the proposed Neuro observer can tune the gain obtained by differentiating observational error at transient state automatically by using the backpropagation training method to stabilize the observational speed. To prove a performance of the proposed observer, it is simulated that the comparison between the state estimate performance of the proposed observer and that of Sliding, High gain observer is made by using a sinusoidal input to the observer which consists of four layers in stable 2nd order system.

Keywords

References

  1. Guoping Zeng, and Hunt, L.R 'Nonlinear observers for output tracking' Proc. 35th IEEE , volume: 2 , Dec. 1996, pp.11-13 https://doi.org/10.1109/CDC.1996.572891
  2. S. Kawaji, and H.S. Kim, 'Full Order Observer for Linear Descriptor Systems with Unknown-Inputs', The 34th IEEE Conf. on Decision and Control, Louisiana, USA, 1995, pp. 2366-2368 https://doi.org/10.1109/CDC.1995.480691
  3. V. I. Utkin, 'Variable Structure Systems with Sliding Modes', IEEE Trans. Automat. Contr., vol. AC-22, No.2, pp. 212-222, 1977 https://doi.org/10.1109/TAC.1977.1101446
  4. G. Bartolini, P. Pydynowski, 'An Improved Chattering Free VSC Scheme for Uncertain Nonlinear Systems', IEEE Trans. Automat. Contr., vol. 41, pp. 1220-1226, 1996 https://doi.org/10.1109/9.533691
  5. G. Bartolini, A. Ferrara, E. Usai, 'Chattering Aviodance by Second-order Sliding Mode Control', IEEE Trans. Automat. Contr., vol. 43, pp. 241-246, 1998 https://doi.org/10.1109/9.661074
  6. T. Ahmed-Ali and F. Lamnabhi-Lagarrige, 'Sliding Observer-Controller Design for Uncertain Triangular Nonlinear Systems', IEEE Trans. on Automatic Control, vol. 44, no. 6, pp.1244-1249, June 1999 https://doi.org/10.1109/9.769383
  7. D.G. Luenberger, 'An Introduction to Observers', IEEE, Vol.AC-16, pp.596-602,1971
  8. C. Namuduri, 'A Servo-control System using a Self-controlled Synchronous Motor(SCSM) with Sliding Mode Controller', IEEE Trans. Ind. Appl., vol. 23, no. 2, pp. 283-295, 1987 https://doi.org/10.1109/TIA.1987.4504904
  9. H. Hashimoto et al., 'Variable Structure Approach for Brushless Servo Motor Control', IECON '87, pp. 1169-1179, 1987
  10. E. Y. Y. Ho and P. C. Sen, 'Control Dynamics of Speed Drive Systems using Sliding Mode Controllers with Integral Compensation', IEEE Trans. Ind. Appl. vol. 27, no. 5, pp. 883-892, 1991 https://doi.org/10.1109/28.90343
  11. B.K.Bode, 'Sliding Mode Control of Induction Motor', Conf. Record of IEEE-IAS ANN. Meeting,1985,pp. 479-486
  12. G. B. Wang, S. S. Peng, and H. P. Huang, 'A sliling Observer for nonlinear Process Control', Chemical Engineering Science, Vol. 52, pp.787-805, 1997 https://doi.org/10.1016/S0009-2509(96)00449-6
  13. H. K. khalil, 'Numerical Differentiation Using High-Gain Observer', Proceedings of the 36th IEEE Conference on a decision and Control, Vol. 2, pp. 4790-4795, December 1997 https://doi.org/10.1109/CDC.1997.649776
  14. J. J. Slotine, J. K. Hedrick, and E. A. Misawa, 'On sliding observer for nonlinear systems', Trans. ASME, J. Dynamic Syst., Measurement and Contr, vol. 109, pp. 245-252, 1987 https://doi.org/10.1115/1.3143852