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Proceedings Paper

Adaptive-passive control of noise radiation of gear-box systems using a pair of shunted piezo-based rotating inertial actuators
Author(s): G. Zhao; N. Alujevic; B. Depraetere; Gregory Pinte; P. Sas
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Paper Abstract

In this paper, two Piezo-Based Rotating Inertial Actuators (PBRIAs) are considered for the suppression of the structureborne noise radiated from rotating machinery. Each inertial actuator comprises a piezoelectric stack element shunted with the Antoniou’s gyrator circuit. This type of electrical circuit can be used to emulate a variable inductance. By varying the shunt inductance it is possible to realize two tuneable vibration neutralizers in order to suppress single frequency vibrations of a slowly rotating shaft. As a consequence, reductions in the sound radiated from the machine housing can be also achieved. First a theoretical study is performed using a simplified lumped parameter model of the system at hand. The simplified model consists of a rotating shaft and two perpendicularly mounted shunted PBRIAs. Secondly, the shunted PBRIA is tested on an experimental test bed comprising a rotating shaft mounted in a frame. The noise is radiated by a plate that is attached to the frame. The experimental results show that a reduction of 11 dB on the disturbance force transmitted from the rotating shaft through the bearing to the housing can be achieved. This also generates a reduction of 9 dB for the plate vibration and the radiated noise.

Paper Details

Date Published: 2 April 2015
PDF: 13 pages
Proc. SPIE 9431, Active and Passive Smart Structures and Integrated Systems 2015, 94311C (2 April 2015); doi: 10.1117/12.2083849
Show Author Affiliations
G. Zhao, KU Leuven (Belgium)
N. Alujevic, KU Leuven (Belgium)
B. Depraetere, Flanders' Mechatronics Technology Ctr. (Belgium)
Gregory Pinte, Flanders' Mechatronics Technology Ctr. (Belgium)
P. Sas, KU Leuven (Belgium)

Published in SPIE Proceedings Vol. 9431:
Active and Passive Smart Structures and Integrated Systems 2015
Wei-Hsin Liao, Editor(s)

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