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Updated: Jul 23, 2026
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Experiments on Ultrasonic Lubrication Using a Piezoelectrically-assisted Tribometer and Optical Profilometer
Published on: September 28, 2015
Thin-disk piezoceramic ultrasonic motor. Part I: design and performance evaluation
Fuh Liang Wen1, Chi Yung Yen, Minsun Ouyang
1Department of Engineering and System Science, National Tsing-Hua University, 30043, Hsinchu, Taiwanb, ROC. ericwen@mail.sjsmit.edu.tw
Ultrasonics
|July 11, 2003
Summary
This study presents an innovative piezoceramic-driving ultrasonic actuator. The design utilizes a composite structure for high actuating and braking performance, with robust control for precision applications.
Area of Science:
- Mechanical Engineering
- Materials Science
- Robotics
Background:
- Ultrasonic actuators are crucial for precision motion control.
- Existing designs often face limitations in performance and cost-effectiveness.
- Piezoceramic materials offer unique electromechanical coupling for vibration-based actuation.
Purpose of the Study:
- To design and construct an innovative thin-disk piezoceramic-driving ultrasonic actuator.
- To investigate the flexural wave characteristics of a composite PZT-metal structure.
- To demonstrate high actuating and braking capabilities for various applications.
Main Methods:
- Developed a composite stator structure with a piezoceramic (PZT) membrane bonded on a metal sheet.
- Utilized the converse piezoelectric effect for mechanical vibration via single-phase AC power.
- Applied geometric constraints to manipulate flexural wave behavior.
- Implemented a closed-loop sliding mode control (SMC) for nonlinear compensation.
Main Results:
- Achieved maximum rotational speeds of 600 rpm for the rotor.
- Demonstrated very high actuating and braking abilities.
- Confirmed separate and flexible mechanical design of actuator and rotor.
- Showcased robust performance in position tracking and noise rejection via SMC.
Conclusions:
- The developed ultrasonic actuator offers a simple, inexpensive, and effective solution for precision motion.
- The design allows for flexible customization based on application requirements.
- Sliding mode control effectively compensates for nonlinear mechanical behaviors, ensuring high accuracy and precision.
