Piezoelectric motor drive circuit and method

Details Piezoelectric motor drive circuit and method Piezoelectric motor drive circuit and method

2007-06-05

2007-06-05

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S316010

Reexamination Certificate

active

11119060

ABSTRACT:
A piezoelectric transducer is driven to mechanically oscillate a mirror at a mechanical resonant frequency with high precision despite frequency variations introduced by temperature, tolerances and ageing of components. Switches are actuated at different times in order to make the drive frequency correspond to the mechanical resonant frequency.

REFERENCES:
patent: 5534970 (1996-07-01), Nakashima et al.
patent: 2002/0125324 (2002-09-01), Yavid et al.
patent: 2004/0004775 (2004-01-01), Turner et al.
patent: 2004/0007941 (2004-01-01), Yuasa et al.
patent: 2005/0002087 (2005-01-01), Knowles et al.

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