Model reduction for aeroservoelastic systems

Claudia P. Moreno, Peter J Seiler Jr, Gary J. Balas

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

A model-reduction method for linear, parameter-varying systems based on parameter-varying balanced realizations is proposed for a body freedom flutter vehicle. A high-order linear, parameter-varying model with hundreds of states describes the coupling between the short period and first bending mode with additional structural bending and torsion modes that couple with the rigid body dynamics. However, these high-order state-space models result in a challenging control design, and hence a reduced-order linear, parameter-varying model is desired. The objective is to reduce the model state order across the flight envelope while retaining a common set of states in the linear, parameter-varying model.Areduced-order linear, parameter-varying model with tens of states is obtained by combining classical model reduction and parameter-varying balanced realizations reduction techniques. The resulting reduced-order model captures the unstable dynamics of the vehicle and is well suited for the synthesis of active flutter suppression controllers.

Original languageEnglish (US)
Pages (from-to)280-290
Number of pages11
JournalJournal of Aircraft
Volume51
Issue number1
DOIs
StatePublished - Jan 1 2014

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Flight envelopes
Torsional stress
Controllers

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Model reduction for aeroservoelastic systems. / Moreno, Claudia P.; Seiler Jr, Peter J; Balas, Gary J.

In: Journal of Aircraft, Vol. 51, No. 1, 01.01.2014, p. 280-290.

Research output: Contribution to journalArticle

Moreno, Claudia P. ; Seiler Jr, Peter J ; Balas, Gary J. / Model reduction for aeroservoelastic systems. In: Journal of Aircraft. 2014 ; Vol. 51, No. 1. pp. 280-290.
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