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The stator design of a new type of spherical motor driven by piezoelectric actuators is developed. A curved piezoelectric actuator is designed to attach to the spherical surface. A series of the curved piezoelectric actuators is laid in a line around a spherical surface. By applying an appropriate voltage signal with phase difference on neighboring actuators, a traveling wave is generated on the hemispherical...
A spherical motor driven by piezoelectric actuators is developed. Each set of piezoelectric actuators are laid in a line around a spherical surface, which is designed to provide one degree-of-freedom motion. Applying appropriate voltage signal with phase difference on the neighboring actuators so that traveling wave is generated. All sets of a series of piezoelectric actuators are constructed mutually...
A two degree-of-freedom motor system constructed with two sets of piezoelectric actuators mutually perpendicular around a spherical surface is designed. Each set is employed with a series of piezoelectric actuators driven by voltage with appropriate phase difference on the neighboring actuators so that traveling wave is generated. Such a system can be used for robot (eyes or joints), flight guide...
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