Research on the construction method of the displacement field for a star sensor bracket based on fiber Bragg grating strain monitoring

Sizhou Dong; Weihua Deng; Zhaoguang Bai; Zhijia Liu; Jing Chang; Han Gao; Yuchen Bai

doi:10.1117/12.2603065

24 November 2021 Research on the construction method of the displacement field for a star sensor bracket based on fiber Bragg grating strain monitoring

Sizhou Dong, Weihua Deng, Zhaoguang Bai, Zhijia Liu, Jing Chang, Han Gao, Yuchen Bai

Author Affiliations +

Proceedings Volume 12066, AOPC 2021: Micro-optics and MOEMS; 120660E (2021) https://doi.org/10.1117/12.2603065
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

In order to further improve the measurement precision of the star sensor and solve the problem on displacement field construction for on-orbit star sensor mounting bracket. In this paper, star sensor mounting bracket is simplified, and the theoretical formula on the displacement field of the star sensor mounting bracket is constructed based on beam bending theory, curvature recursive method and the least square method. Secondly, fiber Bragg grating sensors are embedded in the key nodes of the star sensor mounting bracket, and the strain of the star sensor mounting bracket is measured by the static test. Then, the displacement field of the star sensor mounting bracket is constructed based on the strain test data, and combined with the theoretical formula for the displacement field. Finally, comparing the measured data of displacement mete with the constructed displacement field values and static simulation results, the feasibility and accuracy of the method on constructing the displacement field of star sensor mounting bracket by using embedded fiber Bragg grating for strain monitoring is further verified.

Citation Download Citation

Sizhou Dong, Weihua Deng, Zhaoguang Bai, Zhijia Liu, Jing Chang, Han Gao, and Yuchen Bai "Research on the construction method of the displacement field for a star sensor bracket based on fiber Bragg grating strain monitoring", Proc. SPIE 12066, AOPC 2021: Micro-optics and MOEMS, 120660E (24 November 2021); https://doi.org/10.1117/12.2603065

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