Design and modeling of a piezo-driven three-dimensional bridge-type amplification mechanism with input/output guiding constraint

被引：6

作者：

Zhou, Kuiyong ^{[1
,2
]}

Liu, Pengbo ^{[1
,2
]}

Lu, Shuaishuai ^{[1
,2
]}

Yan, Peng ^{[3
]}

机构：

[1] Qilu Univ Technol, Sch Mech Engn, Shandong Acad Sci, Jinan 250353, Peoples R China

[2] Shandong Inst Mech Design & Res, Jinan 250031, Peoples R China

[3] Shandong Univ, Sch Mech Engn, Minist Educ, Key Lab High Efficiency & Clean Mech Manufacture, Jinan 250061, Shandong, Peoples R China

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2022年 / 93卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Piezoelectric actuators;

D O I：

10.1063/5.0076287

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Owing to the limited stroke of piezo stacks, compliant amplification mechanisms are widely employed to magnify the displacement of piezoelectric actuators for emerging applications in precision engineering. In this study, a three-dimensional (3D) bridge-type amplification mechanism composed of two serially connected bridge-type amplifiers with a novel constraint form has been developed. The parallel guiding beams mounted at the input and output ends significantly increase the lateral stiffness and minimize parasitic displacements for higher accuracy. Furthermore, a new theoretical model is established to predict the magnification behavior of the 3D amplifier that takes into account the displacement loss caused by the coupling of the two bridge-type amplifiers. The accuracy of this model and the mechanical performance of the developed amplifier are verified by conducting finite element simulations and experimental studies on the manufactured prototypes.

引用

页数：12