A type of motor that utilizes multilayer piezoelectric devices forelectromechanical power conversion and a mechanism for the strain wavegearing for the generation of traveling waves and motive force isproposed. The configuration, basic operation, and torque generationmechanism of the motor are described. The motor operates in variablefrequency, that is in a nonresonant mode. Experimental results on therotational speed and generated torque characteristics of theexperimental motor, which is made of metals except for the piezoelectricdevices, are also presented, verifying the feasibility of the motor andindicating the possibility of realizing piezoelectric motors of largetorque
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