Curve swing head supersonic mciro motor composed of multiple piezoelectric lamination pile transducer |
Title： |
| Curve swing head supersonic mciro motor composed of multiple piezoelectric lamination pile transducer |
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Application Number： |
200410071152 |
Application Date： |
2004/07/30 |
Announcement Date： |
2005/03/02 |
Pub. Date： |
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Publication Number： |
1588784 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H02N 2/12 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Zhou Tieying, Chu Xiangcheng, Chen Yu |
Key Words： |
Curve swing head, supersonic mciro motor, multiple piezoelectric lamination pile, transducer |
Abstract： |
This invention relates to a bending rocking ultrasonic micro-electric motor made of multiple group of piezoelectric sheets pile. It comprises: a central axle, a stator and a rotor slipped-over therewith, and a torque output part. The stator is composed of: an upper matching block, a converter, an electrode leading-out piece and a lower matching blocks. The converter is n pieces piezoelectric sheets (n>14), on the two surfaces of the sheet is divided into m electrodes (m>32) with different polarizing direction. All the sheets are put together to form a pile. Internal connection or external connection is used for connection between each layer electrodes. The simple signal excioted ones are parallel connected, then leading-out electrode; on the other hand, the coswt signal excites ones are also parallel connected then leading-out electrode. Advantages are: minimized, useful in biological, medical, micro-mechancial, national defance sciences fields. |
Claim： |
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Priority： |
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PCT： |
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