A pair of piezo-based rotating inertial actuators for active structural acoustic control of rotating machinery

Zhao, Guoying and Alujević, Neven and Depraetere, Bruno and Pinte, Gregory and Swevers, Jan and Sas, Paul (2015) A pair of piezo-based rotating inertial actuators for active structural acoustic control of rotating machinery. = A pair of piezo-based rotating inertial actuators for active structural acoustic control of rotating machinery. In: 25th International Conference on Adaptive Structures and Technologies (ICAST 2014), 06.-08.10.2014., The Hague, Nizozemska.

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Official URL: https://bib.irb.hr/datoteka/765792.ICAST2014-manus...

Abstract

In this paper, two Piezo-Based Rotating Inertial Actuators (PBRIAs) are considered for the suppression of the structure-borne noise radiated from rotating machinery. As add-on devices, they can be directly mounted on a rotational shaft, in order to intervene as early as possible in the transfer path between disturbance and the noise radiators. A MIMO form of the modified FxLMS control algorithm is employed to generate the appropriate actuation signals, relying on a linear interpolation scheme to approximate the nonlinear secondary plants. The proposed active vibration control approach is tested on an experimental test bed comprising a rotating shaft mounted in a frame to which a noise-radiating plate is attached. The disturbance force is introduced by an electrodynamic shaker. The experimental results show that when the shaft rotates below 180 rpm, more than a 7 dB reduction can be achieved in terms of plate vibrations, along with a reduction in the same order of magnitude in terms of noise radiation.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): Actuators; Algorithms; Architectural acoustics; Equipment testing; Machinery; MIMO systems; Rotating machinery; Vibrations (mechanical) Active structural acoustic control; Active vibration controls; Experimental testbed; Inertial actuators; Linear Interpolation; Multi input multi output; Radiating surface; Structure-borne noise
Subjects: TECHNICAL SCIENCE > Shipbuilding
TECHNICAL SCIENCE > Electrical Engineering
TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 0 (15.12.2017.)
Date Deposited: 20 Mar 2017 14:42
Last Modified: 15 Dec 2017 14:24
URI: http://repozitorij.fsb.hr/id/eprint/7594

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