Controller Design

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Controller Design

Michailidis, Michail G. / Valavanis, Kimon P. / Rutherford, Matthew J.

Flight control design for unconventional UAVs with time-varying aerodynamic uncertainties focuses particularly on how the uncertain parameters can be incorporated in the aircraft mathematical model. Lift, drag, sideforce, rolling moment, pitching moment and heading moment coefficients must be appropriately modeled so that uncertainty can be tackled. Literature has already shown that the exact calculation of the aerodynamic characteristics of a specific aircraft is a challenging task [1, 2]. This is why estimations and computer software such as XFLR5, found in [3], are employed to derive approximations. The solution considered to overcome this obstacle is \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\mu $$\end{document}-analysis of uncertain systems and additive uncertainty weighting functions. Before presenting the complete process for the proposed UAV controller framework, there is the need to demonstrate how uncertainty can be represented on a given system for \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\mu $$\end{document}-synthesis to be applied.