Worst case analysis of a saturated gust loads alleviation system

Andreas Knoblach, Harald Pfifer, Peter Seiler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

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 parametervarying (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.

Original languageEnglish (US)
Title of host publicationAIAA Guidance, Navigation, and Control Conference, 2013
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Electronic)9781510801097
StatePublished - 2015
EventAIAA Guidance, Navigation, and Control Conference, 2015 - Kissimmee, United States
Duration: Jan 5 2015Jan 9 2015

Publication series

NameAIAA Guidance, Navigation, and Control Conference 2015, MGNC 2015 - Held at the AIAA SciTech Forum 2015

Other

OtherAIAA Guidance, Navigation, and Control Conference, 2015
CountryUnited States
CityKissimmee
Period1/5/151/9/15

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