Experimental tests on smart panels for the reduction of sound radiation (CROSBI ID 540545)
Prilog sa skupa u časopisu | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Gardonio, Paolo ; Gonzalez-Diaz, Cristobal ; Alujević, Neven ; Aoki, Yohko
engleski
Experimental tests on smart panels for the reduction of sound radiation
This paper presents a comparative experimental study carried out on four types of smart panels for the reduction of sound radiation. The four panels are equipped with decentralized velocity feedback control units that are designed to generate active damping. In this way the frequency averaged response and sound radiation produced by stochastic disturbances can be effectively reduced at low audio frequencies. The first smart panel is composed of a 4×4 array of square piezoelectric patch actuators with accelerometer sensors at their centres. The second smart panel is composed of sixteen triangularly shaped piezoelectric patch actuators with base edges evenly distributed along the perimeter of the panel and accelerometer sensors located on the top vertices of the actuators. The third panel is composed of five electrodynamic inertial actuators with accelerometer sensors located under their footprints. The fourth panel is equipped with a light honeycomb trim panel mounted on four stiff mounts. A set of nine reactive electrodynamic actuators is located in the shallow cavity between the two panels. Accelerometer sensors are mounted at the two footprints of each actuator. The sensor-actuator pairs mounted in the four panels are used to implement analogue local feedback loops.
Active control; Noise; Vibration; Smart Structures
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Podaci o prilogu
3870-3870.
2008.
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objavljeno
Podaci o matičnoj publikaciji
Pierce, Allan D.
New York (NY): American Institute of Physics (AIP)
0001-4966
Podaci o skupu
Acoustics’ 08
predavanje
29.06.2008-04.07.2008
Pariz, Francuska
Povezanost rada
Strojarstvo, Zrakoplovstvo, raketna i svemirska tehnika