| 一种实用旋转调制式陀螺寻北仪的设计 |
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| 引用本文： | 徐海刚,郭宗本.一种实用旋转调制式陀螺寻北仪的设计[J].兵工学报,2010,31(5):616-619. |
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| 作者姓名： | 徐海刚 郭宗本 |
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| 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;北京航空航天大学,仪器科学与光电工程学院,北京,100191 |
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| 基金项目： | "985工程"资助项目 |
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| 摘 要： | 提出一种实用的旋转调制式陀螺寻北仪结构,由1个单轴光纤陀螺(FOG)、2个石英加速度计和旋转机构组成,完成寻北的同时还可以得到具有一定精度的纬度信息。推导了寻北原理公式。基于递推最小二乘法开发了实用的算法,以消除陀螺漂移和噪声对寻北精度的影响。进行了误差分析,指出影响寻北精度的重要因素是陀螺漂移的稳定性,对寻北精度进行了理论计算。研制原理样机进行了8位置寻北试验,结果表明:3min内方位角估计值进入0.1°误差带,重复性精度可达0.071°,纬度精度可达0.068°.
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| 关 键 词： | 自动控制技术 寻北仪 旋转调制 光纤陀螺 加速度计 递推最小二乘 |
Design of a Practical Rotation-Modulated Gyro North-Finder |
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| XU Hai-gang,GUO Zong-ben.Design of a Practical Rotation-Modulated Gyro North-Finder[J].Acta Armamentarii,2010,31(5):616-619. |
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| Authors: | XU Hai-gang GUO Zong-ben |
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| Affiliation: | (School of Instrument Science and Opto-Electronics Engineering, Beihang University， Beijing 100191, China) |
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| Abstract: | A practical rotation-modulated north-finder was put forward which consists of only one fiber optic gyro(FOG),two quartz accelerometers and rotation table,to produce the information of local latitude with certain accuracy at finding north.The formulas of finding north principle were deduced.An applied algorithm was developed by recursive least square method to reduce effect of drift and noise of gyro on the precision of finding north.Precision of north-finding was estimated by error analysis which concludes ... |
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| Keywords: | automatic control technology north-finder rotation-modulation fiber optic gyro accelerometer recursive least square |
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