Standing-wave vibration motor

Details Standing-wave vibration motor Standing-wave vibration motor

1997-05-13

1999-09-21

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310317, 310323, H01L 4108

Patent

active

059558199

ABSTRACT:
A highly-efficient standing-wave vibration motor is disclosed in which the rotating direction can be maintained when the driving frequency is in the vicinity of the resonant frequencies. Driving signals are applied to the motor via an inductance element. The inductance of the element is determined so that the phase difference between a phase of a bending vibration and a phase of a longitudinal vibration with respect to currents in relation to the respective driving voltages does not exceed .pi..

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