A Rotary Linear Motor Driven by a Pair of Two-Dimensional Ultrasonic Actuators

摘要

There is a need to draw various patterns on the inner wall of a small pipe several millimeters in diameter to develop a precise linear scale. Since the authors have al- ready developed a two-dimensional ultrasonic actuator that can move an object is two orthogonal directions inde- pendently, they now offer a rotary linear motor, in which the motor shaft is driven by a pair of two-dimensional ultrasonic actuators. Hence, the motor can rotate and move directly, simultaneously, or independently.