Parametric uncertainty modeling for LFT model realization

Abstract

This paper presents a procedure for parametric uncertainty modeling of a small unmanned aerial vehicle flight dynamics for the purpose of LFT model realization. Experimental data measurements were taken to construct the parametric uncertainties in the 6-DOF nonlinear simulation model for the vehicle . A new approach is used to linearize the uncertain nonlinear simulation model developed and a physically meaningful LFT model was obtained. The accuracy and exactness of this approach was benchmark against the original uncertain nonlinear simulation model with uncertainty perturbations.