2001•Kiso Junkatsu Sekkei Bumon Kouenkai kouen rombunshuu/Kiso Junkatsu Sekkei Bumon Koenkai koen ronbunshuOpen access
124 Development of a Multi-Degree-of-Freedom Ultrasonic Motor using a Square Plate Stator
Y. Ohno, Kenjiro Takemura, Takashi Maéno
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Abstract
Stators for the formerly developed multi-degree-of-freedom ultrasonic motors are not small enough compared with their rotors. In this study, a new type of multi-degree-of-freedom ultrasonic motor, whose stator is relatively small, is developed. First, the stator is designed in detail using a finite element analysis. An outline of the stator is square plate, which has four projections to be in contact with a spherical rotor. The rotor rotates around three perpendicular axes using three natural vibrations of the stator. Second, the designed stator is actually produced, and motion tests of the rotor are conducted. As a result, it is confirmed that the multi-degree-of-freedom motion of the rotor is experimentally produced.