Comparative Analysis of the Efficiency of Fiber Winding Types Used in the Fiber-Optic Gyro Sensor Coil Under Temperature Variation Conditions
Keywords:Fiber-optic gyroscope, Fiber winding, Shupe effect
Background. The paper is devoted to the study of the effectiveness of different types of coil fiber winding of fiber optic gyro (FOG) in reducing of the impact of Shupe effect under temperature changes.
Objective. The objective of the study is to evaluate the effectiveness of different types of FOG fiber coil winding under temperature changes.
Methods. Based on the analysis of existing types of winding, and formulae for non-reciprocal phase shift calculation, a method for evaluation of the impact of temperature gradient on coils with different types of winding is created. Method mentioned is applied to 9 different types of coil winding.
Results. The dependencies of zero shift vs time for nine types of winding under the impact of axial, radial temperature gradients and combinations thereof are obtained.Conclusion. Overall, use of quadruple windings seems to be optimal; for low precision sensors one can recommend centered unipolar winding while ensuring good thermal and vibration insulation of the coil. The use of pads (or frameless coils) is justified when simple winding is used (e.g., in devices for short-living objects, for automotive industry, etc.), or for high-precision sensors.
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