Abstract
Any helicopter flight controller design requires knowledge of a mathematical model that accurately describes the dynamic behavior of the helicopter. This mathematical model is represented by a set of ordinary differential equations. Establishing such a model for helicopters is a challenging task. This Chapter provides a thorough description of a frequency domain identification procedure for the extraction of linear models that correspond to certain operating conditions of the helicopter. The discussed methodology was initially presented in (Tischler and Remple in Aircraft and Rotorcraft System Identification, AIAA Education Series, AIAA, Washington, 2006) and it has been successfully applied for a small-scale helicopter in the work reported in (Mettler in Identification Modeling and Characteristics of Miniature Rotorcraft, Kluwer Academic Publishers, Norwell, 2003). The frequency domain identification procedure is evaluated for an experimental small-scale Radio Controlled (RC) Raptor 90 SE helicopter using the X-plane flight simulator. The Raptor 90 SE helicopter has also been used for the evaluation and comparison of the several controller designs and identification methods that are presented in this book.
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Raptis, I.A., Valavanis, K.P. (2011). Frequency Domain System Identification. In: Linear and Nonlinear Control of Small-Scale Unmanned Helicopters. Intelligent Systems, Control and Automation: Science and Engineering, vol 45. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-0023-9_5
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DOI: https://doi.org/10.1007/978-94-007-0023-9_5
Publisher Name: Springer, Dordrecht
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