Drive control device for ultrasonic motors

Details Drive control device for ultrasonic motors Drive control device for ultrasonic motors

1997-04-21

1999-08-17

Budd, Mark O

Electricity: motive power systems

Nonmagnetic motor

310316, 310323, H01L 4108

Patent

active

059398477

ABSTRACT:
A drive control device for ultrasonic motors (actuators), including a driving unit for driving the ultrasonic motors, a detecting device for detecting the characteristics of each of two ultrasonic motors and generating a signal indicating the difference in the characteristics, and an output difference controlling unit for controlling the driving unit based on the signal from the detecting device, thereby regulating the difference in the outputs of the two ultrasonic motors.

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