一种新的旋转调制捷联惯导系统  

A new type of rotating modulation SINS

作　　者：伊国兴[1] 谢阳光[1] 王常虹[1] 赵洪亮 

机构地区：[1]哈尔滨工业大学空间控制与惯性技术研究中心,哈尔滨150001 [2]中国石油管道公司压缩机组维检修中心,廊坊065000

出　　处：《中国惯性技术学报》2011年第3期261-266,共6页Journal of Chinese Inertial Technology

基　　金："十一五"装备预研项目(51309060304)

摘　　要：随着光学陀螺等对重力加速度不敏感的陀螺器件的逐渐完善,一种源于静电陀螺的旋转调制技术备受关注,从而建立基于相对廉价的光学陀螺的高精度惯性导航系统成为可能。通过对单轴和双轴旋转调制技术原理和局限性的分析,提出了一种四陀螺双单轴旋转调制捷联惯导系统,并详细分析了旋转轴的不对准误差、惯性器件测量轴的不对准误差、常值漂移误差、标度因数误差对惯导系统的影响。最后通过对无旋转调制系统、单轴旋转调制系统、双轴旋转调制系统和四陀螺双单轴旋转调制系统进行仿真对比,结果证明四陀螺双单轴旋转调制系统精度性能较单轴旋转调制系统有较大提高,与双轴旋转调制系统性能相当,但系统的复杂性明显降低。With the gradual pefection of the inertial instruments,which is insensitivity to gravity acceleration,e.g.optical gyroscope,a kind of rotating modulation technology has developed from electrostatic gyroscope.Consequently,it is possible to build high precision inertia navigation systems using this method based on the low cost optical gyroscopes.Based on the analysis of principle and limitation of the single-axis and two-axis revolving modulating technology,this paper proposes a kind of four-gyroscope strapdown inertial navigation system（SINS） with double single-axis rotating modulation scheme.The influences to inertial navigation system caused by the non-alignment error of evolving axis,non-alignment error of measured axis,constant drift error and scale factor error are investigated.Compared with non-rotation scheme,single-axis rotation scheme and two-axis rotation scheme,the double single-axis with four gyroscopes is more accurate than single-axis rotation scheme.Meanwhile,it obtains similar accuracy in comparison with two-axis rotation scheme,but its complexity has been greatly reduced.

关 键 词：旋转调制 四陀螺 误差补偿 捷联惯导系统 

分 类 号：U666.1[交通运输工程—船舶及航道工程]