期刊
ADVANCES IN MECHANICAL ENGINEERING
卷 7, 期 9, 页码 -出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1687814015595016
关键词
Piezoelectric; actuator; stick-slip; linear
资金
- National Natural Science Foundation of China [51275198, 51105163]
- Special Projects for Development of National Major Scientific Instruments and Equipments [2012YQ030075]
- National Hi-tech Research and Development Program of China (863 Program) [2012AA041206]
- Program for New Century Excellent Talents in University of Ministry of Education of China [NCET-12-0238]
- Specialized Research Fund for the Doctoral Program of Higher Education [20130061110026]
- Patent Demonstration Project for Research Team in Jilin Province [20130416015ZG]
- Training project of the Challenge Cup'' by Jilin University [450060507040]
A piezo-driven linear actuator based on the improved stick-slip principle is developed in this article. With the help of two piezo-stacks and flexure hinges, the preload force can be changed, so the designed actuator can realize relatively large linear ranges and large output force. The designed actuator mainly consists of the mover, the stator, two piezo-stacks, an adjusting stage and the base. The working principle and theoretical analysis are described. A prototype actuator was fabricated and a series of experiments were carried out to investigate the work characteristics of it. Experimental results indicate that the maximum speed is about 3.086mm/s and the maximum output force is 0.98N. They are both improved compared with the traditional stick-slip motion. Experimental results confirm that the proposed actuator can realize large output force relatively and different motion speeds with high accuracy under different driving voltages and frequencies.
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