Design and experiments of a novel micro-displacement mechanism based on piezoelectricity actuator

Ya Li; Jinghe Wang; Wen-jie Zhai; Shen Dong; Guo Li

doi:10.1117/12.973729

16 October 2012 Design and experiments of a novel micro-displacement mechanism based on piezoelectricity actuator

Ya Li, Jinghe Wang, Wen-jie Zhai, Shen Dong, Guo Li

Proceedings Volume 8416, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 84162J (2012) https://doi.org/10.1117/12.973729
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

This paper aims at the design and analysis of a novel micro-displacement mechanism. The micro-displacement adopts a novel flexure hinge as support, which is driven by piezoelectric actuator (PZT). The flexure hinge consists of two flexure foils, which parallel with each other and are combined permanently with connection shaft. The flexure foil structure was analyzed and simplified as simple supported beam, and the mathematical model was established. The flexure hinge was simulated with finite element analysis method. From the simulation results, the new flexure hinge has less maximum strain fluctuation rate under different force directions, compared with traditional flexure hinges. Finally, experiments were carried out on the new flexure hinge. The radial rigidities of different directions were experimentally measured, which indicate close results compared with the above analysis. According to the results, the novel micro-displacement mechanism overcomes the shortcomings of the traditional micro-displacement mechanism, and greatly improves the radial stiffness.

Citation Download Citation

Ya Li, Jinghe Wang, Wen-jie Zhai, Shen Dong, and Guo Li "Design and experiments of a novel micro-displacement mechanism based on piezoelectricity actuator", Proc. SPIE 8416, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 84162J (16 October 2012); https://doi.org/10.1117/12.973729

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KEYWORDS

Actuators

Ferroelectric materials

Mathematical modeling

Finite element methods

Lithium

Structural design

Manufacturing

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