| 机抖激光陀螺的伪圆锥运动研究 |
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| 引用本文： | 奔粤阳,孙枫,高伟,聂琦.机抖激光陀螺的伪圆锥运动研究[J].辽宁工程技术大学学报(自然科学版),2008,27(5). |
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| 作者姓名： | 奔粤阳 孙枫 高伟 聂琦 |
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| 作者单位： | 哈尔滨工程大学,自动化学院,黑龙江,哈尔滨,150001 |
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| 摘 要： | 对于机抖激光陀螺捷联惯导系统,激光陀螺的机械抖动偏频引入伪圆锥运动.本文推导了伪圆锥运动情况下等效旋转矢量的误差表达式.分析了伪圆锥误差的起因、影响因素.研究了圆锥补偿算法在伪圆锥运动中的适用性.从最小化姿态计算误差的角度,提出了机械抖动频率的设计准则,并设计数字滤波器去除抖动信号噪声.分析结果表明:合理设置抖动频率,再结合数字滤波器可以有效提高的姿态计算精度.
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| 关 键 词： | 机抖激光陀螺 捷联惯导 伪圆锥运动 伪圆锥误差 |
Pseudo coning motion for dithered ring laser gyro |
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| BEN Yueyang,SUN Feng,GAO Wei,NIE Qi.Pseudo coning motion for dithered ring laser gyro[J].Journal of Liaoning Technical University (Natural Science Edition),2008,27(5). |
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| Authors: | BEN Yueyang SUN Feng GAO Wei NIE Qi |
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| Institution: | BEN Yueyang,SUN Feng,GAO Wei,NIE Qi(Automatic College,Harbin Engineering University,Harbin 150001,China) |
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| Abstract: | The mechanical dithering of ring laser gyro(RLG) brings pseudo coning motion for strapdown inertial navigation system(SINS) with dithered RLG.This paper deduces the error expressions of the rotating vector under the pseudo coning motion and analyses the origin and infection factor of pseudo coning error.The applicability of coning compensation algorithm is studied too.The design rules for dithered frequency are presented in order to minimize the attitude errors.Digital filter is designed to wipe off noise s... |
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| Keywords: | dithered ring laser gyro SINS pseudo coning motion pseudo coning error |
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