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弹载光纤陀螺旋转惯组误差自补偿技术

Error Autocompensation of FOG-based Rotating Inertial Measurement Unit for Ballistic Missile

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摘要

目前弹载惯性测量组合测试标定精度受外界干扰影响较大,特别是光纤陀螺温度稳定性低,易受环境温度影响参数变化,导致误差补偿效果不好。针对该问题,提出设计一种光纤陀螺旋转惯性测量组合。在惯性测量组合外加旋转轴,在导弹飞行过程中使惯性测量组合绕旋转轴连续旋转,将射前补偿不完全误差调制为周期项,从而达到误差自补偿的效果。理论分析和仿真结果表明,通过旋转不仅能自动补偿与转轴垂直方向惯性仪表的常值误差和部分安装误差,而且能补偿加速度计部分一次项误差、二次项误差和部分交叉轴耦合项误差,选择合适的旋转方案还可以完全消除旋转速度与陀螺仪标度因数误差、安转误差的耦合误差。

Abstract

To solve the problems that the prelaunch calibration accuracy of ballistic missile is seriously influenced by external disturbance, especially the temperature stability of Fiber Optic Gyro (FOG) is so low that the parameters are changed by temperature influence and the error compensation is not satisfying, a rotating inertial measurement unit based on FOG for the missile is proposed. A rotating axis is added to the strapdown Inertial Measurement Unit (IMU), the IMU rotates around the axis, and the residual error after prelaunch compensation is modulated into periodic terms. Then, error autocompensation is realized. Through theoretical analysis and simulation, not only the constant error and part of misalignment errors of inertial instruments orthogonal to rotating axis, but the first-order, second-order and part of cross-coupling error of intersecting axis of Accelerometers can be compensated by rotating, and the coupling error between rotating speed and error of scale factor and misalignment of FOG can be eliminated completely by selecting appropriate rotating scheme.

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中图分类号:V241.5;TN253

DOI:10.3969/j.issn.1003-501x.2012.06.007

所属栏目:波导光学与光纤技术

基金项目:中国博士后基金资助项目 (20090461470)

收稿日期:2011-08-01

修改稿日期:2012-02-11

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作者单位    点击查看

刘洁瑜:第二炮兵工程大学自动控制系,西安 710025
杨建业:第二炮兵工程大学自动控制系,西安 710025
汪立新:第二炮兵工程大学自动控制系,西安 710025
蔚国强:第二炮兵工程大学自动控制系,西安 710025

联系人作者:刘洁瑜(jieyu.liu@gmail.com)

备注:刘洁瑜(1970-),女(汉族),广东增城人。副教授,博士,主要从事光学惯性器件技术及测试的研究。

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引用该论文

LIU Jie-yu,YANG Jian-ye,WANG Li-xin,YU Guo-qiang. Error Autocompensation of FOG-based Rotating Inertial Measurement Unit for Ballistic Missile[J]. Opto-Electronic Engineering, 2012, 39(6): 41-46

刘洁瑜,杨建业,汪立新,蔚国强. 弹载光纤陀螺旋转惯组误差自补偿技术[J]. 光电工程, 2012, 39(6): 41-46

被引情况

【1】张建辉,安盼龙,徐鹏飞,郑永秋,薛晨阳,张文栋,闫树斌. 光学微腔相位调制解调系统中的纹波噪声. 光电工程, 2014, 41(1): 42-47

【2】李攀,白满社,邢云云,严吉中. LiNbO3芯片的无损边缘抛光实验. 应用光学, 2014, 35(6): 1069-1074

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