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Dual-Use Transducer for Use with a Boundary-Stiffened Panel and Method of Using the SameA transducer for use with a boundary-stiffened panel has an inter-digitated electrode (IDE) and a piezoelectric wafer portion positioned therebetween. The IDE and/or the wafer portion are triangular, with one edge or side aligned with a boundary edge of the panel. The transducer generates and transmits an output force to the panel in response to an input voltage signal from a sensor, which can be another transducer as described above or an accelerometer. A controller can generate an output force signal in response to the input voltage signal to help cancel the input voltage signal. A method of using the transducer minimizes vibration in the panel by connecting multiple transducers around a perimeter thereof. Motion is measured at different portions of the panel, and a voltage signal determined from the motion is transmitted to the transducers to generate an output force at least partially cancelling or damping the motion.
Document ID
20110006907
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Schiller, Noah H.
Cabell, Randolph H.
Date Acquired
August 25, 2013
Publication Date
February 22, 2011
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
Patent Number: NASA-Case-LAR-17634-1
Patent Application Number: US-Patent-Appl-SN-12/328,162
Patent Number: US-Patent-7,893,602
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-Case-LAR-17634-1|US-Patent-7,893,602
Patent Application
US-Patent-Appl-SN-12/328,162
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