静电陀螺捷联系统姿态初始对准研究  

Research on ESG Strapdown System Attitude Initial Alignment

作　　者：陈家斌[1] 陆恺[1] 金志华 

机构地区：[1]南京航空航天大学,上海交通大学

出　　处：《中国惯性技术学报》1994年第1期1-8,共8页Journal of Chinese Inertial Technology

摘　　要：静电陀螺是构成捷联系统的理想惯性元件。与速率陀螺相比，静电陀螺捷联系统姿态初始对准有其相应的特点，通过陀螺传感器敏感转子极轴与壳体座标系之间的方向余弦和加速度计的输出信息获取载体的姿态角。由于极轴在惯性空间稳定的特点使静电陀螺捷联系统在姿态初始对准时可应用天文导航原理。基于此，本文用天文导航算法对静电陀螺捷联系统姿态初始对准原理进行了探讨，并分析了陀螺漂移、陀螺传感器测角误差和加速度计观测误差对姿态初始对准精度的影响。所得结论对静电陀螺捷联系统的理论和应用研究有参考意义。ESG is an ideal inertial element constituting strapdown system.ESG strapdown system attitude initial alignment, which computes carrier's attitude an-gles from the direction cosines between rotor spin axis and shell frame measured by gyro sensors and the accelerometers output information, is different from that of rate gyro. Based on the characteristic of ESG polar axis stabilizing in inertial space, the principle of ESG strapdown system attitude initial alignment using astronavigation algorithm is discussed in this paper. The attitude initial alignment errors which caused by gyro drift, gyro sensors angle measuring errors and accelerometers measuring errors are also analyzed. The results got in this paper will have reference significance for developing ESG strapdown system.

关 键 词：捷联系统 静电陀螺 初始对准 加速度计 陀螺漂移 测角误差 速率陀螺 地球自转角速度 赤纬 自由转子陀螺仪 

分 类 号：U666.12[交通运输工程—船舶及航道工程]