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Results of Short-Period Helicopter System Identification Using Output-Error and Hybrid Search-Gradient Optimization Algorithm

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  • Ronaldo Vieira Cruz
  • Luiz Carlos Sandoval Góes

Abstract

This article focuses on the problem of parameter estimation of the uncoupled, linear, short-period aerodynamic derivatives of a “Twin Squirrel” helicopter in level flight and constant speed. A flight test campaign is described with respect to maneuver specification, flight test instrumentation, and experimental data collection used to estimate the aerodynamic derivatives. The identification problem is solved in the time domain using the output-error approach, with a combination of Genetic Algorithm (GA) and Levenberg-Marquardt optimization algorithms. The advantages of this hybrid GA and gradient-search methodology in helicopter system identification are discussed.

Suggested Citation

  • Ronaldo Vieira Cruz & Luiz Carlos Sandoval Góes, 2010. "Results of Short-Period Helicopter System Identification Using Output-Error and Hybrid Search-Gradient Optimization Algorithm," Mathematical Problems in Engineering, Hindawi, vol. 2010, pages 1-17, August.
    • Handle: RePEc:hin:jnlmpe:231594
    DOI: 10.1155/2010/231594
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