Title

Novel Nonlinear Control Design For A Two-Dimensional Airfoil Under Unsteady Flow

Abstract

In this paper, a particular class of trailing-edge flap-controlled two-dimensional aeroelastic systems with structural nonlinearities in plunging and pitching, and operating in an unsteady aerodynamic incompressible flowfield, is considered. By using the flap hinge torque of the trailing edge flap surface as the control input, a partial state feedback continuous adaptive controller is proposed in order to suppress the aeroelastic vibrations of the wing section model. It is shown that the control design with respect to an appropriately chosen output variable yields an asymptotic stability result for all three of the pitching, plunging, and flapping degrees of freedom. Numerical simulation results clearly demonstrate the effectiveness of the control strategy toward suppressing aeroelastic vibration at both pre- and postflutter flight speed regimes. © Copyright 2013 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

Publication Date

1-1-2013

Publication Title

Journal of Guidance, Control, and Dynamics

Volume

36

Issue

6

Number of Pages

1681-1694

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/1.61132

Socpus ID

84893503722 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84893503722

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