Low Velocity Impact Localization System Using FBG Array and MVDR Beamforming Algorithm

被引：11

作者：

Sai, Yaozhang ^{[1
]}

Jiang, Mingshun ^{[1
]}

Sui, Qingmei ^{[1
]}

Jia, Lei ^{[1
]}

Lu, Shizeng ^{[1
]}

机构：

[1] Shandong Univ, Sch Control Sci & Engn, Jinan 250100, Peoples R China

来源：

PHOTONIC SENSORS | 2015年 / 5卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Fiber Bragg grating; minimum variance distortionless response; Morlet wavelet transform; multi-impact localization; BRAGG GRATING SENSORS; COMPOSITE STRUCTURES; DAMAGE; IDENTIFICATION; MATRIX;

D O I：

10.1007/s13320-015-0271-y

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This paper proposes an impact localization system based on the fiber Bragg grating (FBG) array and minimum variance distortionless response (MVDR) beamforming algorithm. The linear FBG array, which contains seven FBG sensors, is used for detecting impact signals. Morlet wavelet transform is applied for extracting narrow-band signals of impact signals. According to the MVDR beamforming algorithm, the system realizes single-impact and multi-impact localizations. The localization system is verified on a 500 mm x 500 mm x 2 mm carbon fiber reinforced polymer (CFRP) plate for single-impact and multi-impact localizations. The average locating error and the maximum locating error are 6.8 mm and 9.9 mm, respectively.

引用

页码：357 / 364

页数：8

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