Vibration wave motor

Details Vibration wave motor Vibration wave motor

1987-07-09

1988-06-07

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310323, H01L 4108

Patent

active

047498960

ABSTRACT:
In a vibration wave motor, one of periodic signals of different phases to be applied to first and second electro-mechanical energy conversion elements is generated without frequency-dividing an output of an oscillator and a phase-shifted signal with respect to the output of the oscillator is generated by a phase locked loop and applied to the other conversion element.

REFERENCES:
patent: 4504760 (1985-03-01), Yammamoto
patent: 4510411 (1985-04-01), Hakamata et al.
patent: 4562373 (1985-12-01), Tokusima et al.
patent: 4613782 (1986-09-01), Mori et al.
patent: 4658172 (1987-04-01), Izukawa
patent: 4692649 (1987-09-01), Izukawa
patent: 4692672 (1987-09-01), Okuno

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