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Published on: September 28, 2015
A rotary ultrasonic motor using bending vibration transducers
Summary
A novel rotary ultrasonic motor utilizes superimposed bending vibrations to create an elliptical motion. This innovative design achieves a no-load speed of 58 rpm and a maximum torque of 9.5 Nm.
Area of Science:
- Mechanical Engineering
- Materials Science
- Robotics
Background:
- Rotary ultrasonic motors offer precise motion control.
- Existing designs face challenges in efficiency and torque generation.
Purpose of the Study:
- To propose a new rotary ultrasonic motor design.
- To investigate the use of bending vibration transducers for elliptical motion generation.
Main Methods:
- Superimposing two orthogonal bending vibrations within each transducer.
- Generating an elliptical trajectory at the driving foot of the motor.
- Utilizing a prototype to measure performance characteristics.
Main Results:
- The prototype demonstrated a no-load speed of 58 rpm.
- The motor achieved a maximum torque of 9.5 Nm.
- Performance was measured under an exciting voltage of 200 V(rms).
Conclusions:
- The proposed rotary ultrasonic motor design is feasible.
- Bending vibration transducers can effectively generate elliptical trajectories for rotary motion.
- The prototype shows promising performance for potential applications.
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