A new friction-type piezoelectric motor utilizing mechanism of the strain wave gearing

A new type of motor that utilizes multilayer piezoelectric devices for electromechanical power conversion and mechanism of the strain wave gearing for generation of traveling motive force is proposed in this paper. The construction, basic operation, and torque generation mechanism of the motor are described. The motor can be operated in variable frequency. Experimental results on the prototype motor made of metals are also presented. The feasibility of the proposed motor is verified and the possibility of realizing piezoelectric motors with a larger torque is shown.