Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1996-06-14
1998-12-15
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310323, H01L 4109, H01L 4104
Patent
active
058501177
ABSTRACT:
A vibration actuator is provided with a rectangular parallelepiped elastic member of which a surface bears electromechanical converting elements adhered thereto and a relative moving member maintained in pressure contact with the other surface of the elastic member. A driving voltage is applied to excite the electromechanical converting elements to generate, in the elastic member, a longitudinal vibration vibrating in a plane parallel to the surface of the elastic member contacting the relative moving member and a bending vibration vibrating in a direction crossing the contacting surface, thereby generating a relative motion between the elastic member and the relative moving member. The elastic member has working portions for adjusting the difference of the resonance frequencies of the longitudinal and bending vibrations.
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Piezoelectric Linear Motors for Moving Optical Pickup, pp. 393-398 (English translation attached).
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Excerpt from White Series No. 132, "Ultrasonic Motors", ed. Torikeppsu, .
Takagi Tadao
Tobe Michihiro
Budd Mark O.
Nikon Corporation
Williams Timothy A.
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