Naslov
Adaptive-passive control of structure-borne noise of rotating machinery using a pair of shunted inertial actuators

Autori
Zhao, Guoying ; Pinte, Gregory ; Alujević, Neven ; Depraetere, Bruno ; Sas, Paul

Izvornik
Journal of intelligent material systems and structures (1045-389X) 27 (2016), 12; 1584-1599

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Piezoelectric element; rotating inertial actuator; shunting; adaptive passive control; structure-borne noise

Sažetak
In this paper, two Piezo-Based Rotating Inertial Actuators (PBRIAs) are considered for the suppression of the structure-borne 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 realise two tuneable vibration neutralisers to suppress tonal frequency vibrations of a slowly rotating machine. Also, reductions in the noise radiated from the machine housing can be 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 PBRIAs are 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.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Elektrotehnika, Strojarstvo

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