Piezoelectric motors and motor driving configurations

Details Piezoelectric motors and motor driving configurations Piezoelectric motors and motor driving configurations

2007-04-03

2007-04-03

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S323020, C310S323160, C310S328000

Reexamination Certificate

active

11223430

ABSTRACT:
A piezoelectric motor comprising: a piezoelectric vibrator having an axis of symmetry and a first vibration mode, which when excited generates oscillatory motion of mass points in the vibrator parallel to the axis of symmetry; and at least one friction nub having a center of mass displaced from the axis of symmetry, as a result of which displacement, when the vibration mode is excited, torque is generated on the vibrator that excites a second vibration mode of the vibrator.

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