Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1992-08-21
1993-08-31
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310332, 310333, H01L 4108
Patent
active
052412350
ABSTRACT:
This invention is for a single lamina twisting transducer made of an electrodeformable material. The twisting transducer has responsivity vectors which are curved or circular in nature so that when an electric field is applied the transducer will twist, exserting an angular force rather than a linear force as prior art transducers do. The twisting lamina can be stacked with a common electrode between them. The transducers can be used in actuators to provide angular forces in actuators. When combined in actuator stacks with linear transducers the actuator stack can be controlled in six degrees of freedom. Thus accurate moving and positioning of objects can be accomplished by use of such an actuator stack. Further since such an actuator stack is sensitive to accelerations in six degrees of freedom it can be used in making an accelerometer. Other uses for twisting actuators are for motors and rotational positioning of objects.
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Technical Reference EMDUSM-8703 "Ultrasonic Motor" Panasonic Industrial Co., Electric Motor Division of Matsushita Industrial Co., Ltd., Osaka, Japan.
Budd Mark O.
Dougherty Thomas M.
Field Harry B.
Hamann H. Fredrick
Kahm Steven E.
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