[1] Ma Haoquan, Hu Dejin, Zhang Kai,. Micro-displacement amplifying mechanismdriven by piezoelectric actuator [J]. Journal of Southeast University (English Edition), 2004, 20 (1): 75-79. [doi:10.3969/j.issn.1003-7985.2004.01.016]
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Micro-displacement amplifying mechanismdriven by piezoelectric actuator(
)
基于压电陶瓷驱动的微位移放大机构
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 20
- Issue:
- 2004 1
- Page:
- 75-79
- Research Field:
- Mechanical Engineering
- Publishing date:
- 2004-03-30
Info
- Title:
- Micro-displacement amplifying mechanismdriven by piezoelectric actuator
- 基于压电陶瓷驱动的微位移放大机构
- Author(s):
- Ma Haoquan; Hu Dejin; Zhang Kai
- School of Mechanical and Dynamic Engineering, Shanghai Jiaotong University, Shanghai 200030, China
- PACS:
- TH134
- DOI:
- 10.3969/j.issn.1003-7985.2004.01.016
- Abstract:
- Piezoelectric actuator has high stiffness, high frequency and infinite control precision, but a short output displacement which is often 1/1 000 of its length. In order to meet the requirements that tools feeding should be long-travel, high-frequency and high-precision in non-circular precision turning, a new one-freedom flexure hinge structure is put forward to amplify the output displacement of piezoelectric actuator. Theoretical analysis is done on the static and dynamic characteristics of the structure, differential equations are presented, and it is also verified by the finite element method. It’s proved by experiments that the output displacement of the structure is 293 μm and its resonant frequency is 312 Hz.
- 压电陶瓷驱动器具有刚性好、频响高和控制精度高的特点, 但是其输出位移却较小, 通常是其长度的1/1 000.在非圆回转曲面精密车削中, 为了实现刀具大位移、高频响、高精度的进给要求, 提出了新型单自由度柔性铰链机构对压电陶瓷驱动器的输出位移进行放大.同时对机构进行了静态和动态特性理论分析, 提出了机构静态和动态计算解析式, 并用有限元方法对机构动态和静态特性进行了验证.实验证明机构的最大输出位移为293 μm, 谐振频率为312 Hz.
References:
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Memo
- Memo:
- Biographies: Ma Haoquan(1971—), male, graduate; Hu Dejin(corresponding author), male, professor, djhu@sjtu.edu.cn.