Optimisation of Controlled Aeroelastic Systems
Document typeMaster thesis
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This project presents and investigates a methodology for the optimisation of control systemsand structural parameters of aeroelastic systems, which enables a rapid acquisition of designcriteria with low computational costs.The aerolastic system is modelled via a set of non-linear intrinsic beam equations for thestructure together with a two-dimensional model for the unsteady aerodynamics. The sys-tem’s number of degrees of freedom is truncated by a modal reduction while maintainingthe relevant physical information for the optimisation process. The aerolastic system hasbeen verified through a comparison of the flutter dynamics with benchmark results. Anadjoint sensitivity analysis is then performed to extract the derivatives of a cost function,for instance the strain energy during a gust perturbation, with respect to some paramet-ers of interest such as the weights of a PID-type controller or the wing’s mass distribution,to be applied to a gradient-based optimisation and find a minimum of this objective function.This methodology, which has been implemented with MATLAB, is very flexible and canbe easily applied to different cost functions as well as optimisation paramete
Present and investigate a methodology for the optimisation of control systems and structural parameters of aeroelastic systems, which enables a rapid acquisition of design criteria with low computational costs.
DegreeMÀSTER UNIVERSITARI EN ENGINYERIA AERONÀUTICA (Pla 2014)