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Principle research on self-decoupled inelastic style piezoelectric three-degrees-of-freedom accelerometer

Published online by Cambridge University Press:  12 August 2014

Huayi Lv ,
Lan Qin ,
Jun Liu ,
Linna Zhou ,
Ying Duan  and
Jiubing Mao
Huayi Lv
Affiliation:
Key Lab of Optoelectronic Technology & Systems of Ministry of Education, Chongqing University, Chongqing 400044, P.R. China
Lan Qin
Affiliation:
Key Lab of Optoelectronic Technology & Systems of Ministry of Education, Chongqing University, Chongqing 400044, P.R. China
Jun Liu*
Affiliation:
Key Lab of Optoelectronic Technology & Systems of Ministry of Education, Chongqing University, Chongqing 400044, P.R. China
Linna Zhou
Affiliation:
Key Lab of Optoelectronic Technology & Systems of Ministry of Education, Chongqing University, Chongqing 400044, P.R. China
Ying Duan
Affiliation:
Key Lab of Optoelectronic Technology & Systems of Ministry of Education, Chongqing University, Chongqing 400044, P.R. China
Jiubing Mao
Affiliation:
Key Lab of Optoelectronic Technology & Systems of Ministry of Education, Chongqing University, Chongqing 400044, P.R. China
*
ae-mail: junliu@cqu.edu.cn
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Abstract

A self-decoupled inelastic style piezoelectric three-degrees-of-freedom (three-DOF) accelerometer is put forward for the solution of cross coupling interference without decoupling easily in the field of three-DOF acceleration sensing. Meanwhile, the proposed piezoelectric three-DOF accelerometer has simple structure and solves the contradictions between high stiffness and high sensitivity. The operating principle of the presented piezoelectric three-DOF accelerometer is analyzed, and its structure model is constructed. The numerical simulation model (finite element model) of the three-axis accelerometer is established. Piezoelectric quartz is chosen for the acceleration sensing element and conversion element, and its output sensitivity, static characteristics, dynamic natural frequency, etc. are analyzed by FEM tool (ANSYS software). Research results show that the proposed piezoelectric three-DOF accelerometer has advantages of simple and rational structure, correct sensing principle and mathematic model, good linearity, high rigidity, and theoretical natural frequency is more than 16 kHz, self-decoupled without complex decoupling work.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 67 , Issue 2 , August 2014 , 21001
Copyright
© EDP Sciences, 2014

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