Abstract
In this chapter, the challenging problem of aircraft on-ground modelling for control design and analysis is dealt with using a novel NDI-based force identification approach and a general nonlinear symbolic LFT modelling framework. It is shown how the modelling framework is applicable to derive an exact LFT model of the aircraft-on-ground as well as some simplified design-oriented versions. An important contribution is the proposed force identification method, which allows nonlinear ground forces to be replaced with saturation-type nonlinearities. As a result, the simplified model boils down to a reduced-order LFT plant where the Δ block only contains time-varying or constant (but uncertain) parameters on the one hand, and saturation-type non-linearities on the other hand. Such a model is then very useful for applying modern analysis and synthesis techniques.
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© 2007 Springer-Verlag Berlin Heidelberg
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Biannic, JM., Marcos, A., Bates, D.G., Postlethwaite, I. (2007). Nonlinear LFT Modelling for On-Ground Transport Aircraft. In: Bates, D., Hagström, M. (eds) Nonlinear Analysis and Synthesis Techniques for Aircraft Control. Lecture Notes in Control and Information Sciences, vol 365. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73719-3_6
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DOI: https://doi.org/10.1007/978-3-540-73719-3_6
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-73718-6
Online ISBN: 978-3-540-73719-3
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