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Proceedings Paper

Evaluation of actuation schemes used for acoustic attenuation of vibrating surfaces
Author(s): Peter M. Tappert; Mathieu Mercadal; Andreas H. von Flotow
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Paper Abstract

This paper compares three actuation schemes to attenuate turbulent boundary layer sound radiated into the cabin through an aircraft fuselage. Two actuation schemes make use of piezoelectric materials and are compared with conventional electromagnetic voice coil actuation. Volume displacement of electromechanical actuators is typically proportional to either volts or amperes. Comparison between actuators can be problematic since drive impedances vary greatly. This paper presents a reliable method to compare actuator power using a transfer function of volume per square root of power. This power consumption curve is useful in direct comparison of actuator stroke capability and spacing requirements.

Paper Details

Date Published: 23 May 1997
PDF: 8 pages
Proc. SPIE 3044, Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies, (23 May 1997); doi: 10.1117/12.274690
Show Author Affiliations
Peter M. Tappert, Hood Technology Corp. (United States)
Mathieu Mercadal, Hood Technology Corp. (United States)
Andreas H. von Flotow, Hood Technology Corp. (United States)


Published in SPIE Proceedings Vol. 3044:
Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies
Janet M. Sater, Editor(s)

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