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Development of Multi-DOF Ultrasonic Motor Using PZT  

Son, Young-Wan (Department of Mechanical Engineering, Korea Univ.)
Takemura, Kenjiro (Department of Mechanical Engineering, Keio Univ.)
Park, Shin-Suk (Department of Mechanical Engineering, Korea Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.27, no.4, 2010 , pp. 53-62 More about this Journal
Abstract
This study introduces about development of multi-DOF ultrasonic motor that are composed of a bar-shaped stator and a spherical rotor. The ultrasonic motor is a motor which is operated by vibrations over frequency of 20kHz. The multi-DOF ultrasonic motor will be developed by expanding the basic theory of existing 1-DOF ultrasonic motor. It can generate 3-DOF rotation of the rotor around perpendicular axes using 3 vibration modes of stator. By using finite element methods, the optimal dimension of stator is decided and made the components of stator. When we apply the multi-DOF ultrasonic motor composed of rotor and stator to the driving test system, it will be checked whether the motor can be driven at the direction of 3-DOF or not. And it is proposed how the simulation of square bar shaped multi-DOF ultrasonic motor is accomplished.
Keywords
Multi-DOF; Ultrasonic Motor; PZT; Finite Element Method;
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