| 挠性陀螺寻北中的航向误差 |
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| 引用本文： | 孙肇荣,杨明,王宏建,褚小青.挠性陀螺寻北中的航向误差[J].导航与控制,2009(3):41-45. |
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| 作者姓名： | 孙肇荣 杨明 王宏建 褚小青 |
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| 作者单位： | 北京航天控制仪器研究所;北京航天控制仪器研究所;北京航天控制仪器研究所;北京航天控制仪器研究所 |
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| 摘 要： | 陀螺两位置寻北中存在非线性航向误差，其测量航向角与真实的航向角差值的大小随真实航向角的变化而变化，呈现出近似为正（余）弦曲线的波动形式。本文分析了挠性陀螺寻北系统中航向效应产生机理。介绍了陀螺两位置寻北原理及误差模型，重点分析了挠性陀螺仪零次项漂移和一次项漂移对航向误差的影响，推导了误差公式，估计了两位置寻北中陀螺仪精度对测量精度的影响，寻北试验的结果验证了理论分析结论。
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| 关 键 词： | 挠性陀螺仪 寻北 航向误差 |
Yaw Error in the Flexible-gyro North-seeking System |
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| SUN Zhao-rong,YANG Ming,WANG Hong-jian and CHU Xiao-qing.Yaw Error in the Flexible-gyro North-seeking System[J].Navigation and Control,2009(3):41-45. |
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| Authors: | SUN Zhao-rong YANG Ming WANG Hong-jian and CHU Xiao-qing |
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| Institution: | Beijing Institute of Aerospace Control Device;Beijing Institute of Aerospace Control Device;Beijing Institute of Aerospace Control Device;Beijing Institute of Aerospace Control Device |
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| Abstract: | Non-linear yaw error exists in the Gyro-two-position North-seeking. The difference of yaw-angle between the metrical data and the real data varies as the reality one does, and appears a fluctuation of approximate sinusoid (cosine-curve). This paper analyses the mechanism of yaw-effect in Flexible-gyro North-seeking system, introduces the principle and the error model of Gyro-two-position North-seeking, pays emphases on analysis of the effects of Flexible-gyro zero bias and first order bias on the yaw error, deduces the error formulas and estimates the measure precision influence of Gyro-two-position North-seeking. Finally the conclusion of theoretic analysis is verified by the results of the north-seeking test. |
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| Keywords: | flexible gyroscope north-seeking yaw(Course) error |
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