Abstract
In this paper, an Incremental Nonlinear Dynamic Inversion (INDI) controller is
developed for the flexible aircraft gust load alleviation (GLA) problem. First, a flexible aircraft model captures both inertia and aerodynamic coupling effects between flight dynamics and structural vibration dynamics is presented. Then an INDI GLA controller is designed for this aircraft model based on sensor measurements and the Kalman filter online estimation. Besides, the fifth order Padé approximation is used to model the pure time delay in the state estimation. Furthermore, simulations of the flexible aircraft flying through various spatial turbulence and gust fields demonstrate the effectiveness of the proposed controller on rigid-body motion regulation, vertical load alleviation, wing root bending moment reduction and elastic modes suppression. Additionally, numerical perturbation tests and a Monte-Carlo study show the robustness of the proposed controller to aerodynamic model uncertainties.
developed for the flexible aircraft gust load alleviation (GLA) problem. First, a flexible aircraft model captures both inertia and aerodynamic coupling effects between flight dynamics and structural vibration dynamics is presented. Then an INDI GLA controller is designed for this aircraft model based on sensor measurements and the Kalman filter online estimation. Besides, the fifth order Padé approximation is used to model the pure time delay in the state estimation. Furthermore, simulations of the flexible aircraft flying through various spatial turbulence and gust fields demonstrate the effectiveness of the proposed controller on rigid-body motion regulation, vertical load alleviation, wing root bending moment reduction and elastic modes suppression. Additionally, numerical perturbation tests and a Monte-Carlo study show the robustness of the proposed controller to aerodynamic model uncertainties.
Original language | English |
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Title of host publication | Proceedings of the 2018 AIAA Atmospheric Flight Mechanics Conference |
Publisher | American Institute of Aeronautics and Astronautics Inc. (AIAA) |
Number of pages | 22 |
ISBN (Electronic) | 978-1-62410-525-8 |
DOIs | |
Publication status | Published - 2018 |
Event | AIAA Atmospheric Flight Mechanics Conference - Kissimmee, United States Duration: 8 Jan 2018 → 12 Jan 2018 https://doi.org/10.2514/MAFM18 |
Conference
Conference | AIAA Atmospheric Flight Mechanics Conference |
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Country/Territory | United States |
City | Kissimmee |
Period | 8/01/18 → 12/01/18 |
Internet address |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.