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Published on: September 1, 2016
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Active friction-regulated inertia impact piezoelectric actuator
Zhipeng Jin1, Xin Song2, BaoShan Guo1
1Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing, 100081, China.
Heliyon
|October 10, 2024
Summary
This study introduces a novel Dual-Stack Motion Mode (DCMM) for inertia impact piezoelectric actuators, overcoming limitations of the Single-Stack Motion Mode (STMM). DCMM significantly enhances actuator speed and precision, offering a competitive advantage.
Area of Science:
- Mechanical Engineering
- Materials Science
- Robotics
Background:
- High-frequency drive-induced back-stepping limits inertia impact piezoelectric actuator performance.
- Piezoelectric stacks offer ultra-fast response times, crucial for overcoming performance limitations.
Purpose of the Study:
- Introduce and evaluate a novel Dual-Stack Motion Mode (DCMM) for inertia impact piezoelectric actuators.
- Compare the performance of DCMM against the traditional Single-Stack Motion Mode (STMM).
Main Methods:
- Detailed description of the actuator's structure and DCMM operational principles.
- Experimental evaluation using a controlled variable approach.
- Comparative analysis across various parameters: inertial mass, driving voltage, frequency, and load.
Main Results:
- DCMM significantly enhances actuator output performance compared to STMM.
- Achieved maximum speed of 1142.79 μm/s and stable single-step displacement of 0.5 μm.
- Demonstrated simple structure, effective driving mechanism, and multiple driving modes.
Conclusions:
- DCMM feasibility is supported by theoretical and experimental evidence.
- Ultra-fast piezoelectric stack response expands operational bandwidth for speed and precision.
- The DCMM actuator presents a substantial competitive advantage in output performance.
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