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Abstract
Control of large-scale, aero-elastic models requires advanced model reduction techniques for implementation of feedback control. New reduced order model techniques must be developed based on the concepts and physics of fluid-structure interaction. Current methods are inefficient and inaccurate when dealing with these large scale aero-elastic models. Reduced order model (ROM) based controllers may produce adverse affects on un-modeled modes causing instability in the system. The idea of compensation is introduced to correct for this problem. The primary goal of this paper is to explore three separate techniques for developing ROM based feedback controllers to aero-elastic systems. They are the following: modal truncation with residual mode filter (RMF) compensation, Schur form with residual state filter (RSF) compensation and the singular perturbation approach.
