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Active and Passive Control for Acceleration Reduction of an Aeroelastic Typical Wing Section
Citation key doi:10.1177/1077546317728147
Author Gefferson C Silva and Flávio J Silvestre and Maurício V Donadon and Osmar S Santos and Antônio B Guimarães Neto and Roberto G. A da Silva and Thiago de S. S Versiani and Pedro J Gonzalez and Rafael M Bertolin
Pages 2673-2687
Year 2018
DOI 10.1177/1077546317728147
Journal Journal of Vibration and Control
Volume 24
Number 13
Abstract The main concern related to the flutter phenomenon is predicting and avoiding it. This paper describes the application of a flexural-torsional flutter testbed for acceleration reduction by applying active and passive model-based control. The model consists of the 2D typical section, with aerodynamic loads estimated by an unsteady time-domain formulation based on Wagner’s function. The active control architecture consists of a stability augmentation system with output feedback and gain scheduling via the linear-quadratic regulator theory and actuation by servomechanism. The passive control employs a shape-memory alloy to provide additional torsional stiffness. Experimental results show considerable reduction of oscillations at a relative low cost for both active and passive control strategies, and that the use of shape memory alloys in aeroelastic stability problems is promising.
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