| 光纤陀螺温度与标度因数非线性建模与补偿 |
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| 引用本文： | 王新龙,马闪.光纤陀螺温度与标度因数非线性建模与补偿[J].北京航空航天大学学报,2009,35(1):28-31. |
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| 作者姓名： | 王新龙 马闪 |
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| 作者单位： | 北京航空航天大学宇航学院,北京,100191;北京航空航天大学宇航学院,北京,100191 |
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| 基金项目： | 航空科学基金资助项目(2007ZC51027);;航天支撑基金资助项目 |
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| 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.
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| 关 键 词： | 光纤传感器 温度模型 标度因数 非线性模型 |
| 收稿时间： | 2008-01-21 |
Nonlinearity of temperature and scale factor modeling and compensating of FOG |
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| Wang Xinlong,Ma Shan.Nonlinearity of temperature and scale factor modeling and compensating of FOG[J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(1):28-31. |
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| Authors: | Wang Xinlong Ma Shan |
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| Institution: | School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| 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 car... |
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| Keywords: | fiber optic sensors temperature model scale factor nonlinear model |
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