104
IRUS TotalDownloads
Altmetric
Aeroelastic control and estimation with a minimal nonlinear modal description
File | Description | Size | Format | |
---|---|---|---|---|
AIAA_Journal_Minimal_Nonl_submitted.pdf | Accepted version | 3.9 MB | Adobe PDF | View/Open |
Title: | Aeroelastic control and estimation with a minimal nonlinear modal description |
Authors: | Artola, M Goizueta, N Wynn, A Palacios, R |
Item Type: | Journal Article |
Abstract: | Modal-based, nonlinear Moving Horizon Estimation (MHE) and Model Predictive Control(MPC) strategies for very flexible aeroelastic systems are presented. They are underpinned by an aeroelastic model built from a 1D intrinsic (based on strains and velocities) description of geometrically-nonlinear beams and an unsteady Vortex Lattice aerodynamic model. Construction of a nonlinear, modal-based, reduced order model of the aeroelastic system, employing a state-space realisation of the linearised aerodynamics around an arbitrary reference point, allows us to capture the main nonlinear geometrical couplings at a very low computational cost. Embedding this model in both MHE and MPC strategies, which solve the system continuous-time adjoints efficiently to compute sensitivities, lays the foundations for real-time estimation and control of highly flexible aeroelastic systems. Finally, the performance and versatility of the framework operating in the nonlinear regime is demonstrated on two very flexible wing models, with notably different dynamics, and on two different control setups: a gust-load alleviation problem on a very high aspect ratio wing with slower dynamics, which involves substantial deflections; and flutter suppression on a flexible wing with significantly faster dynamics, where an unconventional nonlinear stabilisation mechanism is unveiled. |
Issue Date: | 16-Apr-2021 |
Date of Acceptance: | 21-Dec-2020 |
URI: | http://hdl.handle.net/10044/1/86809 |
DOI: | 10.2514/1.J060018 |
ISSN: | 0001-1452 |
Publisher: | American Institute of Aeronautics and Astronautics |
Start Page: | 2697 |
End Page: | 2713 |
Journal / Book Title: | AIAA Journal: devoted to aerospace research and development |
Volume: | 59 |
Issue: | 7 |
Copyright Statement: | © 2021 by M. Artola, N. Goizueta, A. Wynn, and R. Palacios. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. All requests for copying and permission to reprint should be submitted to CCC at www.copyright.com; employ the eISSN 1533-385X to initiate your request. See also AIAA Rights and Permissions www.aiaa.org/randp. |
Sponsor/Funder: | Commission of the European Communities Engineering and Physical Sciences Research Council |
Funder's Grant Number: | 765579 Marie Sklodowska-Curie grant agreement No 765579 2297076 |
Keywords: | Aerospace & Aeronautics 0901 Aerospace Engineering 0905 Civil Engineering 0913 Mechanical Engineering |
Publication Status: | Published |
Online Publication Date: | 2021-04-16 |
Appears in Collections: | Aeronautics Faculty of Engineering |