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A Medium-Frequency Fiber Bragg Grating Accelerometer Based on Flexible Hinges
Article

Design and Measurement of a Dual FBG High-Precision Shape Sensor for Wing Shape Reconstruction

by 1,2, 1,*, 1, 1, 1 and 3
1
National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China
2
School of Electronic Information and Automation, Guilin University of Aerospace Technology, Guilin 541004, China
3
Engineering Comprehensive Training Center, Guilin University of Aerospace Technology, Guilin 541004, China
*
Author to whom correspondence should be addressed.
Academic Editor: Oleg G. Morozov
Sensors 2022, 22(1), 168; https://doi.org/10.3390/s22010168
Received: 7 December 2021 / Revised: 17 December 2021 / Accepted: 22 December 2021 / Published: 28 December 2021
(This article belongs to the Special Issue Fiber Bragg Grating Sensors: Recent Advances and Future Perspectives)
FBG shape sensors based on soft substrates are currently one of the research focuses of wing shape reconstruction, where soft substrates and torque are two important factors affecting the performance of shape sensors, but the related analysis is not common. A high-precision soft substrates shape sensor based on dual FBGs is designed. First, the FBG soft substrate shape sensor model is established to optimize the sensor size parameters and get the optimal solution. The two FBG cross-laying method is adopted to effectively reduce the influence of torque, the crossover angle between the FBGs is 2α, and α = 30° is selected as the most sensitive angle to the torquer response. Second, the calibration test platform of this shape sensor is built to obtain the linear relationship among the FBG wavelength drift and curvature, rotation radian loaded vertical force and torque. Finally, by using the test specimen shape reconstruction test, it is verified that this shape sensor can improve the shape reconstruction accuracy, and that its reconstruction error is 6.13%, which greatly improves the fit of shape reconstruction. The research results show that the dual FBG high-precision shape sensor successfully achieves high accuracy and reliability in shape reconstruction. View Full-Text
Keywords: fiber Bragg grating; curvature; torque; shape reconstruction fiber Bragg grating; curvature; torque; shape reconstruction
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MDPI and ACS Style

Wu, H.; Liang, L.; Wang, H.; Dai, S.; Xu, Q.; Dong, R. Design and Measurement of a Dual FBG High-Precision Shape Sensor for Wing Shape Reconstruction. Sensors 2022, 22, 168. https://doi.org/10.3390/s22010168

AMA Style

Wu H, Liang L, Wang H, Dai S, Xu Q, Dong R. Design and Measurement of a Dual FBG High-Precision Shape Sensor for Wing Shape Reconstruction. Sensors. 2022; 22(1):168. https://doi.org/10.3390/s22010168

Chicago/Turabian Style

Wu, Huifeng, Lei Liang, Hui Wang, Shu Dai, Qiwei Xu, and Rui Dong. 2022. "Design and Measurement of a Dual FBG High-Precision Shape Sensor for Wing Shape Reconstruction" Sensors 22, no. 1: 168. https://doi.org/10.3390/s22010168

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