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Identification and assessment of a nonlinear dynamic actuator model for gust load alleviation in a wind tunnel experiment

Tang, Martin and Böswald, Marc and Govers, Yves and Pusch, Manuel (2021) Identification and assessment of a nonlinear dynamic actuator model for gust load alleviation in a wind tunnel experiment. CEAS Aeronautical Journal. Springer. doi: 10.1007/s13272-021-00504-y. ISSN 1869-5590.

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Official URL: http://link.springer.com/article/10.1007/s13272-021-00504-y

Abstract

In this paper, the effect of nonlinear actuator dynamics on the performance of an active load alleviation system for an experimental flexible wing is studied. Common nonlinearities such as backlash or rate limits are considered for the control surface actuator. An aeroelastic simulation model of a flexible wing with control surface is being used. With this, a parameter study is carried out to quantify the impact of the individual nonlinearities on the overall closed-loop performance by means of describing functions. Finally, the nonlinear actuator model with parameters identified from dedicated tests is experimentally validated allowing for an accurate prediction of the expected gust load alleviation performance.

Item URL in elib:https://elib.dlr.de/141893/
Document Type:Article
Title:Identification and assessment of a nonlinear dynamic actuator model for gust load alleviation in a wind tunnel experiment
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Tang, MartinMartin.Tang (at) dlr.deUNSPECIFIED
Böswald, Marcmarc.boeswald (at) dlr.dehttps://orcid.org/0000-0001-8260-8623
Govers, YvesYves.Govers (at) dlr.dehttps://orcid.org/0000-0003-2236-596X
Pusch, ManuelManuel.Pusch (at) dlr.deUNSPECIFIED
Date:16 April 2021
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI :10.1007/s13272-021-00504-y
Publisher:Springer
ISSN:1869-5590
Status:Published
Keywords:System identification, Active load alleviation, Wind tunnel experiment, Actuator modeling, Nonlinear dynamics, Aeroservoelasticity
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Aircraft Systems
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Tang, Martin
Deposited On:26 Apr 2021 09:24
Last Modified:26 Apr 2021 09:24

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