Electrical system for electrostrictive bimorph actuator

Details Electrical system for electrostrictive bimorph actuator Electrical system for electrostrictive bimorph actuator

2005-05-03

2005-05-03

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S366000

Reexamination Certificate

active

06888291

ABSTRACT:
A bimorph actuator is driven by electrostrictive materials configured to change length in response to applied electrical field. A first electrostrictive material is positioned between a first electrode and a second electrode. A second electrostrictive material is positioned between a second electrode and a third electrode. The second electrostrictive material and the first electrostrictive material are attached to each other such that a differential change in their respective lengths results in a lateral motion. A first voltage source provides a voltage differential between the first electrode and the third electrode. A second variable voltage applied to the second electrode causes the length of the first electrostrictive material to lengthen when the second electrostrictive material shortens, and vice versa. A system of electrodes for the bimorph actuator and a method for actuating electrostrictive materials are also provided.

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