Abstract
The authors have developed Multi degree-of-freedom micro spherical ultrasonic motor using multiple spiral wire stators in previous research. In this research, the authors have developed the new spherical ultrasonic motor using single spiral wire stators. At the beginning, single spiral type wire stator was made. Next, rotational direction was controlled by duty ratio of traveling wave and standing wave. Then the drive properties of rotational speed and starting torque were clarified in this research. In the future, fixing method of wire stators without damping the vibration is needed to be planed. These results contribute to development of blood vessel endoscope which can move camera in any direction.
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