Optical fiber sensing and reconstruction method for morphing wing flexible skin shape

被引：0
|
作者：
Qu D. [1 ]
Sun G. [1 ]
Li H. [1 ]
Lou X. [1 ]
Zhu L. [1 ]
机构：
[1] Beijing Engineering Research Center of Optoelectronic Information and Instruments, Beijing Information Science and Technology University, Beijing
来源：
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | 2018年 / 39卷 / 01期
关键词：
Fiber grating; Flexible sensing; Flexible skin; Morphing wing; Reconstruction algorithm;
D O I：
10.19650/j.cnki.cjsi.j1702537
中图分类号：
学科分类号：
摘要：
In order to solve the problem of real-time monitoring of flexible skin shape of morphing wing, the fiber sensing and reconstruction method of flexible skin shape is studied. The relationship between the wavelength shift of fiber grating and the bending curvature of the flexible skin, and the interpolation surface reconstruction algorithm based on curvature information are theoretically analyzed. An experiment system for curvature calibration of flexible skin was built. A flexible skin with two layers of silicone rubber embedding organic silica gel and fiber Bragg grating sensors was fabricated. The wavelength shifts of the fiber grating for different samples under different curvatures were experimentally measured. The relationship between the wavelength shift of the fiber grating and the curvature of the flexible skin is analyzed. The interpolation algorithm is used to reconstruct the deformation surface of the flexible skin. The technical feasibility of real time monitoring of morphing wing flexible skin shape with fiber sensing is verified. The study results show that the fiber grating sensing method can be used for real-time shape perception of flexible skin; the measurable curvature range is not less than 25 m-1 and the sensitivity can reach 28.07 pm/m-1. The optical fiber sensing method has a promising application prospect in real-time monitoring of deformed wing shape. © 2018, Science Press. All right reserved.
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页码：144 / 151
页数：7
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