北京航空航天大学学报 ›› 2009, Vol. 35 ›› Issue (1): 28-31.

• 论文 • 上一篇    下一篇

光纤陀螺温度与标度因数非线性建模与补偿

王新龙, 马 闪   

  1. 北京航空航天大学 宇航学院, 北京 100191
  • 收稿日期:2008-01-21 出版日期:2009-01-31 发布日期:2010-09-16
  • 作者简介:王新龙(1969-),男,陕西渭南人,副教授,xlwon@163.com.
  • 基金资助:

    航空科学基金资助项目(2007ZC51027); 航天支撑基金资助项目

Nonlinearity of temperature and scale factor modeling and compensating of FOG

Wang Xinlong, Ma Shan,   

  1. School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2008-01-21 Online:2009-01-31 Published:2010-09-16

摘要: 研究了光纤陀螺FOG(Fiber Optic Gyroscope)温度效应和标度因数非线性误差的复合建模及补偿方法.分析了热作用于光纤环引起光路非互易性的机理,针对由温度和标度因数非线性引起的严重非线性漂移误差,提出了一种改进的实用精确补偿FOG温度和标度因数漂移的分段复合建模方法.通过对VG951型FOG全温度和全角速率范围内实际测试数据进行建模及处理表明,经分段复合模型补偿后,陀螺漂移从4.4 (°) /h减小到0.1 (°)/h,较传统补偿方法的精度得到大幅度提高,实验验证了建模方法的精确性及补偿方法的有效性.

Abstract: The error composite modeling and compensating of temperature effect and scale factor nonlinearity of fiber optic gyroscope(FOG) was studied. The mechanism of thermal affect arising from nonreciprocity of optic-loop was analyzed. Based on the severe nonlinearity drift error induced by temperature change and scale factor nonlinearity, an practical and precise composite model was proposed to compensate the error caused by temperature and scale factor-s nonlinearity. The test experiment and data processing were carried out at full temperatures and full rotate rates of FOG-VG951 and indicate, utilizing piece-wise modeling and compensating the FOG, its drift error can be minished from 4.4 (°)/s to 0.1 (°)/s , which is much better than the conventional modeling and compensating means, and the experimental results indicate that the method is useful and feasible.

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