Optimization design for medium-high frequency FBG accelerometer with different eigenfrequency and sensitivity

被引:28
作者
Yin, G. L. [1 ]
Dai, Y. T. [1 ]
Karanja, J. M. [1 ]
Dai, J. X. [1 ]
机构
[1] Wuhan Univ Technol, Natl Engn Lab Fiber Opt Sensing Technol, Wuhan 430070, Peoples R China
基金
美国国家科学基金会;
关键词
Accelerometer; Fiber Bragg grating; Fiber optic sensors; Optimization design; Sensitivity; BRAGG GRATING ACCELEROMETER;
D O I
10.1016/j.sna.2015.10.018
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A simple empirical equation of rotational stiffness for single-notch circular flexible gemel is proposed. Based oh the parameter optimization, we have discussed how to choose the structural parameter's to achieve the balance between the sensitivity and the eigenfrequency. By using sequential quadratic programming (SQP) method, two prototypes of FBG accelerometers with eigenfrequency of 650 Hz and 3050 Hz are designed. Furthermore, we also perform the shaking table test for the fabricated prototype sensors. The experimental results show that the measured eigenfrequency and sensitivity are approximately identical to design values. Also, the FBG accelerometers show great anti-interference capacity in flat range which may be applied to the structural-health monitoring. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:311 / 316
页数:6
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