Micromachines 2017, 8(5), 150; doi:10.3390/mi8050150
Design and Experimental Research of a Novel Stick-Slip Type Piezoelectric Actuator
School of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
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Author to whom correspondence should be addressed.
Academic Editors: Hiroshi Toshiyoshi and Nam-Trung Nguyen
Received: 4 March 2017 / Revised: 26 April 2017 / Accepted: 5 May 2017 / Published: 8 May 2017
Abstract
A linear piezoelectric actuator based on the stick-slip principle is presented and tested in this paper. With the help of changeable vertical preload force flexure hinge, the designed linear actuator can achieve both large travel stick-slip motion and high-resolution stepping displacement. The developed actuator mainly consists of a bridge-type flexure hinge mechanism, a compound parallelogram flexure hinge mechanism, and two piezoelectric stacks. The mechanical structure and motion principle of the linear actuator were illustrated, and the finite element method (FEM) is adopted. An optimal parametric study of the flexure hinge is performed by a finite element analysis-based response surface methodology. In order to investigate the actuator’s working performance, a prototype was manufactured and a series of experiments were carried out. The results indicate that the maximum motion speed is about 3.27 mm/s and the minimum stepping displacement is 0.29 μm. Finally, a vibration test was carried out to obtain the first natural frequency of the actuator, and an in situ observation was conducted to investigate actuator’s stick-slip working condition. The experimental results confirm the feasibility of the proposed actuator, and the motion speed and displacement are both improved compared with the traditional stick-slip motion actuator. View Full-TextKeywords:
piezoelectric; actuator; flexure hinge; stick-slip
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Zhou, M.; Fan, Z.; Ma, Z.; Zhao, H.; Guo, Y.; Hong, K.; Li, Y.; Liu, H.; Wu, D. Design and Experimental Research of a Novel Stick-Slip Type Piezoelectric Actuator. Micromachines 2017, 8, 150.
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