Designing Ordered Structure with Piezoceramic Actuation Units (OSPAU) for Generating Continual Nanostep Motion
Zhanmiao Li1, Xiangyu Gao1, Jikun Yang1
1Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|August 25, 2020
Summary
A novel piezoelectric actuator simplifies nanostep motion for manufacturing and surgery. This actuator uses an artificially generated quasi shear mode (AGQSM) for precise, continual movement with minimal steps.
Area of Science:
- Materials Science
- Mechanical Engineering
- Robotics
Background:
- Precise nanoscale actuation is crucial for advanced manufacturing and surgical robotics.
- Conventional nanostep motion often relies on complex multi-phase drives with multiple piezoelectric actuators.
- Existing piezoelectric materials lack an artificially generated quasi shear mode (AGQSM).
Purpose of the Study:
- To develop a simpler, more efficient nanostep piezoelectric actuator.
- To introduce and utilize the artificially generated quasi shear mode (AGQSM) in piezoelectric actuators.
- To demonstrate the actuator's potential for applications requiring high precision, such as surgical robots.
Main Methods:
- Designed a (2x2) arrayed, cofired multilayer piezoceramic actuator.
- Operated the actuator using a single-phase square-wave voltage drive.
- Investigated motion characteristics at nonresonant frequencies.
Main Results:
- Achieved stable, continual nanostep motion in two distinct modes.
- Obtained a minimum step displacement as low as 7 nm in open control.
- Demonstrated the actuator's functionality using the novel AGQSM.
Conclusions:
- The developed piezoelectric actuator offers a simplified approach to achieving continual nanostep motion.
- The AGQSM provides a unique operational mode for piezoelectric actuation.
- This actuator design holds significant potential for precision applications, including surgical robotics and intelligent manufacturing.
