Evaluation of actuation schemes used for acoustic attenuation of vibrating surfaces

Peter M. Tappert; Mathieu Mercadal; Andreas H. von Flotow

doi:10.1117/12.274690

23 May 1997 Evaluation of actuation schemes used for acoustic attenuation of vibrating surfaces

Peter M. Tappert, Mathieu Mercadal, Andreas H. von Flotow

Proceedings Volume 3044, Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies; (1997) https://doi.org/10.1117/12.274690
Event: Smart Structures and Materials '97, 1997, San Diego, CA, United States

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.

Citation Download Citation

Peter M. Tappert, Mathieu Mercadal, and Andreas H. von Flotow "Evaluation of actuation schemes used for acoustic attenuation of vibrating surfaces", Proc. SPIE 3044, Smart Structures and Materials 1997: Industrial and Commercial Applications of Smart Structures Technologies, (23 May 1997); https://doi.org/10.1117/12.274690

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