Driving device, position controller provided with driving...

Details Driving device, position controller provided with driving... Driving device, position controller provided with driving...

2006-08-01

2006-08-01

Perkey, W. B. (Department: 2851)

Photography

Camera shake sensing

Having stabilization system

C310S316020

Reexamination Certificate

active

07085484

ABSTRACT:
A driving device for an ultrasonic actuator for driving a movable member is provided with a member sensor for detecting a present position of the movable member, a calculator for calculating a control target position of the movable member, a driving circuit for generating such a drive voltage as to drive the ultrasonic actuator in a specified resonant state, and a control circuit for controlling an operative state of the movable member by adjusting at least one of physical quantities specifying the drive voltage as a maneuverable physical quantity in accordance with a difference between the present position and the control target position so that the movable member pursues the control target position. There can be provided a driving device capable of executing a position servo control while being driven in a specified resonant state, and a position controller and a camera provided with such a driving device.

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