Programmable regulation curved surface type vibration and noise reduction piezoelectric superstructure
The invention relates to a programmable regulation and control curved surface type vibration and noise reduction piezoelectric superstructure, which comprises a curved surface substrate, piezoelectric fiber composite material patches serving as piezoelectric transducers and a programmable digital sh...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a programmable regulation and control curved surface type vibration and noise reduction piezoelectric superstructure, which comprises a curved surface substrate, piezoelectric fiber composite material patches serving as piezoelectric transducers and a programmable digital shunt circuit, and is characterized in that the piezoelectric fiber composite material patches are uniformly distributed on the curved surface substrate in a central symmetry manner; the programmable digital shunt circuit is located on the curved-surface substrate and is connected with each piezoelectric fiber composite material patch to form a unit, and the units are mutually independent; the equivalent impedance of the shunt circuit can be changed by adjusting a transfer function realized in the controller through online programming, so that the band gap characteristic of the vibration and noise reduction piezoelectric superstructure is changed, and vibration and noise control of the curved surface structure is rea |
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