Research on FBG sensor used for the strain monitoring of spacecraft structure

Jiande Zhang; Ning Yang; Peng Zheng; Nan Wen; Hualiang Sun; Bo Zhao; Xiang Gao; Qiang Liu

doi:10.1117/12.2623861

27 March 2022 Research on FBG sensor used for the strain monitoring of spacecraft structure

Jiande Zhang, Ning Yang, Peng Zheng, Nan Wen, Hualiang Sun, Bo Zhao, Xiang Gao, Qiang Liu

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121693V (2022) https://doi.org/10.1117/12.2623861
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

The strain of structure is an important parameter in the structural health monitoring of spacecraft. FBG (Fiber Bragg Grating) sensors have the advantages of small size, light weight, anti-electromagnetic interference andeasy to network, which is suitable for the strain measurement of spacecraft structure. In order to improve the accuracy and in-orbit reliability of the strain measurement of spacecraft structure, an FBG strain sensor with metal encapsulation is designed, in which the structure of metal elastomer is optimized by finite element analysis. Meanwhile, a calibration method for the FBG strain sensor is presented, in which the clamping displacement sensitivity, strain transfer coefficient and temperature compensation coefficient are calculated. At last, the FBG strain sensor is verified by ground environmental tests, whose relative error of strain measurement is less than 1.6%, and it has been successfully applied to the in-orbit real-time structure strain measurement of the new spacecraft of China.

Citation Download Citation

Jiande Zhang, Ning Yang, Peng Zheng, Nan Wen, Hualiang Sun, Bo Zhao, Xiang Gao, and Qiang Liu "Research on FBG sensor used for the strain monitoring of spacecraft structure", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121693V (27 March 2022); https://doi.org/10.1117/12.2623861

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