Piezoelectric multilayer-stacked hybrid actuation/transduction system

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United States of America Patent

PATENT NO 8680749
APP PUB NO 20100096949A1
SERIAL NO

12584290

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Abstract

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A novel full piezoelectric multilayer stacked hybrid actuation/transduction system. The system demonstrates significantly-enhanced electromechanical performance by utilizing the cooperative contributions of the electromechanical responses of multilayer stacked negative and positive strain components. Both experimental and theoretical studies indicate that for this system, the displacement is over three times that of a same-sized conventional flextensional actuator/transducer. The system consists of at least 2 layers which include electromechanically active components. The layers are arranged such that when electric power is applied, one layer contracts in a transverse direction while the second layer expands in a transverse direction which is perpendicular to the transverse direction of the first layer. An alternate embodiment includes a third layer. In this embodiment, the outer two layers contract in parallel transverse directions while the middle layer expands in a transverse direction which is perpendicular to the transverse direction of the outer layers.

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Patent Owner(s)

  • NATIONAL INSTITUTE OF AEROSPACE ASSOCIATES;UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jiang, Xiaoning State College, US 39 263
Su, Ji Yorktown, US 23 548
Xu, Tian-Bing Hampton, US 11 102

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