基于热扩散理论的光纤陀螺温度误差补偿方法

doi:10.12305/j.issn.1001-506X.2025.10.28

Abstract

Abstract:

A thermal induced error compensation method for fiber-optic gyroscopes based on thermal diffusion is proposed to address the problem of one-sided compensation for temperature errors caused by a single temperature data. Firstly, a prediction model for the temperature at any point along the axial direction of the fiber optic ring is established based on the principle of thermal diffusion. Then, based on this model, the polynomial and back propagation （BP） neural network temperature compensation models are optimized separately. Finally, under the conditions of full temperature testing, combined with finite element analysis, the accuracy of the temperature prediction model is verified. The optimized compensation model is then used to compensate for the output bias of the multiple fiber-optic gyroscopes. The experimental results show that the optimized polynomial compensation model can improve the compensation accuracy by 67.4% compared to the traditional compensation model, and the optimized BP neural network compensation model can improve the compensation accuracy by up to 90.0% compared to the original data. Compared with the single temperature data compensation, the proposed method effectively improves the output accuracy of the fiber-optic gyroscope.

Key words: fiber-optic gyroscope, zero bias stability, temperature compensation, polynomial fitting, back propagation （BP） neural network

CLC Number:

TN 253

Yunhao ZHANG, Zhaofa ZHOU, Zhili ZHANG, Hongcai LI, Zhe LIANG, Jin LIU. Temperature error compensation method for fiber-optic gyroscope based on thermal diffusion theory[J]. Systems Engineering and Electronics, 2025, 47(10): 3446-3454.

Figures/Tables 17

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References 30

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温度数据	零偏稳定性/（°/h）
温度数据	点位1	点位2	点位3
温度传感器	0.003017	0.004043	0.004002
点位1	—	0.002613	0.002573
点位2	—	—	0.003613

温度数据组合方式	零偏稳定性/（°/h）
温度传感器、点位1和点位2	0.002253
温度传感器、点位1和点位3	0.002282
温度传感器、点位2和点位3	0.003249
点位1、点位2和点位3	0.002387
温度传感器、点位1、点位2和点位3	0.002199

方法	零偏稳定性/（°/h）
方法	陀螺1	陀螺2	陀螺3
补偿前	0.006380	0.007744	0.006136
单点多项式	0.004242	0.003343	0.001626
单点多项式	优化33.5%	优化56.8%	优化73.5%
多点多项式	0.001392	0.001441	0.001377
多点多项式	优化78.4%	优化81.4%	优化77.6%
单点BP	0.001024	0.001088	0.000807
单点BP	优化84.0%	优化86.0%	优化86.8%
多点BP	0.000806	0.000845	0.000619
多点BP	优化87.9%	优化89.1%	优化90.0%

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Temperature error compensation method for fiber-optic gyroscope based on thermal diffusion theory

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