基于双模型的光纤陀螺温度补偿方法（英文）  

Temperature compensation for fiber optic gyroscope based on dual models

作　　者：刘元元[1,2] 杨功流[1,2] 尹洪亮[3] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191 [2]北京航空航天大学惯性技术国防重点实验室,北京100191 [3]中国舰船研究院,北京100192

出　　处：《中国惯性技术学报》2015年第1期131-136,共6页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金(61340044);中央高校基本科研业务费专项资金资助项目(YWF-10-01-B30)

摘　　要：基于Sagnac效应的光纤陀螺(FOG),因其自身的优点广泛地应用在捷联惯性导航系统中(SINS)。然而,温度对FOG的影响包括常值影响和随机影响,仍是制约光纤陀螺性能的关键因素之一。针对不同性质的漂移,首先建立基于相关性分析的多项式模型补偿常值漂移;然后结合时间序列分析的方法,利用Kalman滤波抑制经多项式模型补偿后残差信号中的随机成分,进一步提高FOG的精度。单轴光纤陀螺试验结果表明,传统的单多项式补偿模型,FOG的零偏稳定性能由0.05(°)/h仅提高到0.04(°)/h;采用常值和随机的双补偿模型,FOG的零偏稳定性能由0.05(°)/h提高到了0.01(°)/h。证明了双温度建模与补偿方法的有效性,在工程上有一定的参考价值。In FOG-based strapdown inertial navigation system (SINS), the temperature variation's influence on zero bias of FOG is one of the key factors that degrades the performance, which consists of two parts: a deterministic part and a random part. In this paper, a polynomial model based on correlation analysis is proposed to compensate the deterministic effect of temperature on FOG bias output, and the remaining drift of FOG is compensated based on Kalman filter (KF) model combined with time series analysis to reduce the random drift. This novel dual temperature modeling and compensation method for FOG is established respectively according to the different characteristics of the deterministic and random parts. Traditional single polynomial model is also investigated to provide a comparison with the proposed approach. Experimental results show that the bias stability of FOG output is increased to 0.01 (°)/h from 0.05 (°)/h after compensation by this novel method, while it is increased only to 0.04 (°)/h from 0.05 (°)/h by the traditional single polynomial model. The new method is shown to be more effective in compensating FOG temperature drift and improving FOG accuracy and has significant practical values in engineering. ©, 2015, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.

关 键 词：温度漂移 光纤陀螺 多项式模型 卡尔曼滤波 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]