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Low strain variation design method of the quadrupolar fiber coil based on the comprehensive stress analysis

LIANJIE SHAN1,2,* , JING LI2, JUNLI LIU3, HAO SU3, YINGCHUN LIANG1

Affiliation

  1. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001 , China
  2. Beijing Aerospace Times Optical electronic Technology Co. Ltd., Chinese Academy of Aerospace Electronics Technology, Beijing 100094, China
  3. Beijing Institute of Aerospace Control Device, Beijing 100039, China

Abstract

As a sensitive element of the fiber optic gyroscope (FOG), the fiber coil has a significant effect on the accuracy of FOG. The performance of the fiber coil is severely influenced by the internal strain caused by the winding process. In this paper, a n ew design method is proposed by studying the stress in a quadrupole wound fiber gyro coil comprehensively in order to decrease the strain variation in the fiber coil, which is the low strain design method. Based on the proposed method, the tension stress, the bend induced stress and the curing s tress in the fiber coil during the manufacturing process is studied. Then, the qualified fiber coil for the FOG is obtained by the low strain design method. At last, the experimental results sho w that the proposed method can effectively reduce the internal strain variation in the fiber coil, which ensures the FOG a good temperature and vibration performance..

Keywords

Fiber optic gyroscope, Fiber coil, Stress, Strain.

Citation

LIANJIE SHAN, JING LI, JUNLI LIU, HAO SU, YINGCHUN LIANG, Low strain variation design method of the quadrupolar fiber coil based on the comprehensive stress analysis, Optoelectronics and Advanced Materials - Rapid Communications, 11, 5-6, May-June 2017, pp.342-348 (2017).

Submitted at: April 26, 2016

Accepted at: June 7, 2017