Control of Limit Cycle Oscillations of a Two-Dimensional Aeroelastic System
Joint Authors
Nayfeh, A. H.
Ghommem, M.
Hajj, Muhammad R.
Source
Mathematical Problems in Engineering
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-01-31
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Linear and nonlinear static feedback controls are implemented on a nonlinear aeroelastic system that consists of a rigid airfoil supported by nonlinear springs in the pitch and plunge directions and subjected to nonlinear aerodynamic loads.
The normal form is used to investigate the Hopf bifurcation that occurs as the freestream velocity is increased and to analytically predict the amplitude and frequency of the ensuing limit cycle oscillations (LCO).
It is shown that linear control can be used to delay the flutter onset and reduce the LCO amplitude.
Yet, its required gains remain a function of the speed.
On the other hand, nonlinear control can be effciently implemented to convert any subcritical Hopf bifurcation into a supercritical one and to significantly reduce the LCO amplitude.
American Psychological Association (APA)
Ghommem, M.& Nayfeh, A. H.& Hajj, Muhammad R.. 2010. Control of Limit Cycle Oscillations of a Two-Dimensional Aeroelastic System. Mathematical Problems in Engineering،Vol. 2010, no. 2010, pp.1-13.
https://search.emarefa.net/detail/BIM-497614
Modern Language Association (MLA)
Ghommem, M.…[et al.]. Control of Limit Cycle Oscillations of a Two-Dimensional Aeroelastic System. Mathematical Problems in Engineering No. 2010 (2010), pp.1-13.
https://search.emarefa.net/detail/BIM-497614
American Medical Association (AMA)
Ghommem, M.& Nayfeh, A. H.& Hajj, Muhammad R.. Control of Limit Cycle Oscillations of a Two-Dimensional Aeroelastic System. Mathematical Problems in Engineering. 2010. Vol. 2010, no. 2010, pp.1-13.
https://search.emarefa.net/detail/BIM-497614
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-497614