Flexible Aircraft Gust Load Alleviation with Incremental Nonlinear Dynamic Inversion

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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.
Original languageEnglish
Title of host publicationProceedings of the 2018 AIAA Atmospheric Flight Mechanics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages22
ISBN (Electronic)978-1-62410-525-8
DOIs
Publication statusPublished - 2018
EventAIAA Atmospheric Flight Mechanics Conference - Kissimmee, United States
Duration: 8 Jan 201812 Jan 2018
https://doi.org/10.2514/MAFM18

Conference

ConferenceAIAA Atmospheric Flight Mechanics Conference
CountryUnited States
CityKissimmee
Period8/01/1812/01/18
Internet address

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