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Trajectory Sensitivity Method and Master-Slave Synchronization to Estimate Parameters of Nonlinear Systems

Author

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  • Elmer P. T. Cari
  • Edson A. R. Theodoro
  • Ana P. Mijolaro
  • Newton G. Bretas
  • Luis F. C. Alberto

Abstract

A combination of trajectory sensitivity method and master-slave synchronization was proposed to parameter estimation of nonlinear systems. It was shown that master-slave coupling increases the robustness of the trajectory sensitivity algorithm with respect to the initial guess of parameters. Since synchronization is not a guarantee that the estimation process converges to the correct parameters, a conditional test that guarantees that the new combined methodology estimates the true values of parameters was proposed. This conditional test was successfully applied to Lorenz's and Chua's systems, and the proposed parameter estimation algorithm has shown to be very robust with respect to parameter initial guesses and measurement noise for these examples.

Suggested Citation

  • Elmer P. T. Cari & Edson A. R. Theodoro & Ana P. Mijolaro & Newton G. Bretas & Luis F. C. Alberto, 2009. "Trajectory Sensitivity Method and Master-Slave Synchronization to Estimate Parameters of Nonlinear Systems," Mathematical Problems in Engineering, Hindawi, vol. 2009, pages 1-14, September.
    • Handle: RePEc:hin:jnlmpe:387317
    DOI: 10.1155/2009/387317
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