In this paper, a robust conic gain-scheduled is proposed to suppress oscillations of a twodimensional elastic airfoil. A simplified dynamic model of an elastic airfoil is considered, that includes a flap and a control torque applied directly to the airfoil, resulting in linear parameter-varying dynamics. The control objective is to actively suppress oscillations in the elastic twist of the airfoil, while ensuring robustness to variations in free-stream velocity and parametric model uncertainty. Closed-loop performance is achieved by synthesizing H2-optimal conic controllers at strategically-chosen free-stream velocities. Robust closedloop input-output stability is ensured by the Conic Sector Theorem and the specific form of the scheduling signals used for gain scheduling. Numerical simulations demonstrate the performance and robustness of the proposed synthesis method over a range of free-stream velocities and in the presence of parametric uncertainty.
|Original language||English (US)|
|Title of host publication||AIAA Scitech 2021 Forum|
|Publisher||American Institute of Aeronautics and Astronautics Inc, AIAA|
|Number of pages||14|
|State||Published - 2021|
|Event||AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021 - Virtual, Online|
Duration: Jan 11 2021 → Jan 15 2021
|Name||AIAA Scitech 2021 Forum|
|Conference||AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2021|
|Period||1/11/21 → 1/15/21|
Bibliographical notePublisher Copyright:
© 2021, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.