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A dual-stator threaded linear ultrasonic motor with preload mechanism
Gaoren Zhang1, Hongfei Qin1, Zhongying Wang1
1School of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou 450001, China.
The Review of Scientific Instruments
|October 16, 2024
Summary
This study introduces a dual-stator ultrasonic motor to overcome miniaturization challenges. The novel design significantly boosts output force, enhancing precision engineering applications.
Area of Science:
- Engineering
- Materials Science
- Physics
Background:
- Cylindrical ultrasonic motors offer precision and miniaturization potential.
- Miniaturization challenges include reduced output force and preloading difficulties.
Purpose of the Study:
- To develop a dual-stator, high-thrust cylindrical linear ultrasonic motor.
- To address the diminished output force and preloading issues in miniaturized ultrasonic motors.
Main Methods:
- Designed a dual-stator motor with parallel stators and an elastic component mechanism.
- Utilized simulations to optimize stator parameters and analyze operational modes.
- Constructed a prototype to evaluate impedance and mechanical performance.
Main Results:
- The dual-stator motor achieved 6.8 N output force, compared to 4.3 N for a single-stator.
- Applying preloading stress increased the dual-stator motor's output force to 9.4 N.
- Demonstrated enhanced force generation through dual-stator configuration and preloading.
Conclusions:
- The dual-stator design effectively enhances the output force of cylindrical ultrasonic motors.
- The proposed preloading mechanism is crucial for maximizing motor performance.
- This advancement holds promise for high-precision applications in optics and healthcare.
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