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TITLE |
Acoustic control using a self-sensing actuator |
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著者 |
Ko, B.; Tongue, B. H. |
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発表誌と |
Journal of Sound and Vibration 187 (1) 19 Oct 95 p.145-65. il.tables.refs. （1995） |
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要旨 |
Self-sensing is a novel application of piezomaterials, in which the same piece of piezomaterial is used as both a sensor and actuator. A plane acoustic wave incident on a clamped, thin circular plate was used as a noise source, and a self-sensing actuator bonded to the plate was used to control and sense vibration of the plate. The sound transmission reduction problem was approached as a structural vibration control problem that minimizes the velocity of the plate since the far-field sound pressure is related to the vibrating velocity of the structure.Computer simulations and experiments show that a significant sound reduction can be achieved using a self-sensing actuator. (Original abstract-amended) |