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Closed-loop flutter control using strain actuation

Kandagal, SB and Venkatraman, K (2004) Closed-loop flutter control using strain actuation. In: Aeronautical Journal, 108 (1083). pp. 271-275.

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Official URL: http://www.raes.org.uk/aero_journal.asp

Abstract

The present work investigates feedback control of flutter using piezoceramic strain actuators. A two degree-of-freedom oscillating airfoil model with the air loads simulated assuming unsteady aerodynamics is considered. Various feedback measurement combinations for SISO feedback control and strain actuation in the heave and pitch direction are studied to quantify their effect on flutter. The effect of sensor placement on the airfoil, for combined pitch and heave measurement feedback, is also studied. The results show that for a given aeroelastic system, sensor location is an important parameter in realizing an increase in the flutter speed. It is demonstrated that the flutter speed can be increased by more than 50% through strain actuation in the pitch direction.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Royal Aeronautical Society.
Keywords: INTELLIGENT STRUCTURES
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 22 Dec 2008 06:37
Last Modified: 22 Dec 2008 06:37
URI: http://eprints.iisc.ernet.in/id/eprint/17432

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