Driving apparatus of vibration type actuator

Details Driving apparatus of vibration type actuator Driving apparatus of vibration type actuator

1998-12-07

2000-08-08

Dougherty, Thomas M.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

H02N 214

Patent

active

06100622&

ABSTRACT:
A control apparatus for a vibration type actuator includes a first integral means for integrating a difference between a detected driving speed state of the actuator and a target speed state of the actuator, and a second integral means for integrating the integral value of the first integral means, where a drive operation of the actuator is controlled with a periodic signal varied in accordance with the sum of the integral values of the first and second integral means, thereby accurately controlling the target speed and position of a moving member driven by the actuator.

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