中国激光, 2019, 46 (1): 0106003, 网络出版: 2019-01-27   

光纤陀螺环热扩散延迟响应模型及补偿技术研究 下载: 643次

Response Model and Compensation Technology of Thermal Diffusion Delay in Fiber Optic Gyro Coil
作者单位
北京航空航天大学仪器科学与光电工程学院, 北京 100191
摘要
基于热扩散机理, 研究了光纤陀螺中光纤环热扩散非互易相位误差导致的零漂的延迟响应特性, 发现了延迟时间的温度相关性, 获得了光纤环零漂延迟补偿模型。搭建高精度光纤陀螺实验系统, 在不同温度段, 采用近似“方波”形台阶温变激励, 验证了热致非互易性相位误差的延迟特性, 并获得了实验光纤环的模型参数。进行了光纤陀螺全温变零偏测试, 实验结果表明采用改进模型可获得更好的零偏补偿效果, 验证了新建模型的正确性和有效性。
Abstract
The delay response characteristics of bias drift caused by the non-reciprocity phase errors of a fiber coil in the fiber optic gyroscope (FOG) are investigated. The correlation between temperature and delay time is revealed and the modified temperature drift compensation model is established. In addition, the high-precision FOG experimental system is built. The delay characteristics of the non-reciprocity phase errors are verified using the approximate "square wave" temperature variation at different temperature ranges, and the model parameters of the experimental fiber coil are obtained as well. The test of FOG bias drift in full-temperature is carried out. The experimental results show that the modified model can used to achieve a better compensation effect based on the thermal diffusion mechanism, and the correctness and validity of the new model are verified.

闫晗, 杨远洪, 杨福铃. 光纤陀螺环热扩散延迟响应模型及补偿技术研究[J]. 中国激光, 2019, 46(1): 0106003. Yan Han, Yang Yuanhong, Yang Fuling. Response Model and Compensation Technology of Thermal Diffusion Delay in Fiber Optic Gyro Coil[J]. Chinese Journal of Lasers, 2019, 46(1): 0106003.

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