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Worst Case Analysis of a Saturated Gust Loads Alleviation System

Knoblach, Andreas and Pfifer, Harald and Seiler, Peter (2015) Worst Case Analysis of a Saturated Gust Loads Alleviation System. AIAA Guidance, Navigation, and Control Conference, Orlando, USA. doi: 10.2514/6.2015-0858.

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In order to determine a guaranteed upper bound for worst case 1-cosine gust loads of flexible aircrafts, the usage of the worst case energy-to-peak gain of linear parameter-varying (LPV) systems has been recently proposed. A limitation of this approach is that it cannot deal with nonlinearities. This paper uses integral quadratic constraints (IQCs) to circumvent this restriction and to consider the saturation of a gust loads alleviation system. Based on the dissipation inequality framework, a linear matrix inequality constraint which bounds the worst case energy-to-peak gain of saturated LPV systems is given. In order to reduce the conservatism, an iterative procedure to refine local IQCs is proposed. The conservatism of this approach is analyzed at the example of a two-dimensional thin airfoil in combination with a saturated gust loads alleviation system.

Item URL in elib:https://elib.dlr.de/95433/
Document Type:Conference or Workshop Item (Speech)
Title:Worst Case Analysis of a Saturated Gust Loads Alleviation System
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Knoblach, AndreasAndreas.Knoblach (at) DLR.deUNSPECIFIED
Pfifer, HaraldUniversity of MinnesotaUNSPECIFIED
Seiler, PeterUniversity of MinnesotaUNSPECIFIED
Date:3 March 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2015-0858
Keywords:worst case energy-to-peak gain, linear parameter-varying system, LPV systems, integral quadratic constraints, IQCs, saturation
Event Title:AIAA Guidance, Navigation, and Control Conference
Event Location:Orlando, USA
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Knoblach, Andreas
Deposited On:03 Mar 2015 10:04
Last Modified:31 Jul 2019 19:52

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