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Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (6): 1223-1229.doi: 10.3969/j.issn.1000-1093.2021.06.012

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Effect of Adhesive on the Zero Drift of Interferometric Fiber-optic Gyroscope in Low Temperature Environment

XU Baoxiang1,2, XIONG Zhi1, HUANG Jixun2, YU Haicheng2   

  1. (1.College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, Jiangsu, China;2.Beijing Aerospace Times Optical-electronic Co. Ltd., Beijing 100091, China)
  • Online:2021-07-19

Abstract: Adhesive has significant influence on the zero drift of interferometric fiber-optic gyroscope in low temperature environment. The improper selection and use of adhesives can lead to the deterioration in the accuracy of interferometric fiber-optic gyroscope. The effects of temperature and stress on the zero drift of interferometric fiber-optic gyroscope are analyzed,and the influence of the adhesive on the axial stress of fiber when the temperature changes and its influence factors are also analyzed. Through the test of adhesive performance, it is verified that the glass transition temperature,the difference between the curing temperature and the operating temperature,and the bubbles in the adhesive are primary causes to generate the zero drift of interferometric fiber-optic gyroscope in low temperature environment. Theoretical analysis and test results show that the zero drift can be reduced and the accuracy of interferometric fiber-optic gyroscope in low temperature environment is improved by selecting an adhesive with glass transition temperature beyond the operating temperature, small modulus and small temperature coefficient of modulus,and appropriate curing temperature.

Key words: interferometricfiber-opticgyroscope, fiber, adhesive, lowtemperature, zerodrift

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