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- W1987322488 abstract "Active, semi-passive and passive noise isolations of a plate bonded with piezoelectric elements were studied and their effectiveness is compared. The noise is generated by a loudspeaker inside a box and transmitted to the outside through the plate. The frequency of the noise was swept around the first resonance mode of the plate. The results show that the damping effect at the first resonance mode reaches 7.4dB with semi-passive technique, 13.5dB with active technique and 8.2dB with passive technique. The influence of sweeping speed on the control performance of each approach was investigated, and a large decrease of performance was observed for semi-passive control (70% of decrease) at the sweeping speed of 200Hz/sec. A decrease of 30% is observed in case of active control, whereas there is almost no decrease of performance with passive technique. Increasing the excitation level leads to non-linear behavior of the plate inducing a much lower damping. The influence of excitation level on the control performance of three approaches was investigated. The results show that all these three techniques are easily affected by nonlinearity." @default.
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- W1987322488 date "2006-01-01" @default.
- W1987322488 modified "2023-09-30" @default.
- W1987322488 title "Comparison of active, semi-passive and passive noise isolation of a plate bonded with piezoelectric elements" @default.
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- W1987322488 doi "https://doi.org/10.2978/jsas.18.152" @default.
- W1987322488 hasPublicationYear "2006" @default.
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