A novel cantilever beam for low-frequency high performance piezoelectric geophone

被引：9
|
作者：
Xin, Yi [1 ]
Sun, Hongshuai [1 ]
Guo, Chao [1 ]
Li, Xiang [1 ]
Xu, Yang [1 ]
Lin, Tingting [1 ]
Wang, Shuhong [2 ]
Wang, Cheng [2 ]
机构：
[1] Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130061, Peoples R China
[2] Heilongjiang Univ, Minist Educ, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Peoples R China
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2017年 / 88卷 / 06期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.4986810
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A multilayer spiral-corrugated cantilever beam was developed as an improvement for a conventional single-layer flat cantilever beam to improve the performance of a piezoelectric geophone adopting polyvinylidene fluoride film for low frequency seismic vibration measurement. The proposed structure is longer and has less stiffness compared with the conventional beam, so the piezoelectric geophone adopting the developed cantilever beam has a lower natural frequency. To confirm the validity of the design, the finite element analysis was conducted and the results showed that the natural frequency of the geophone with the multilayer spiral-corrugated cantilever beam is much lower and the corrugated structure can improve the sensitivity of the geophone. Published by AIP Publishing.
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页数：3
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