南京航空航天大学学报（英文版）2023，Vol.40Issue(6)：641-652,12.DOI:10.16356/j.1005-1120.2023.06.002
激光捷联惯性导航系统动态锥动误差建模分析
Dynamic Coning Error Modeling Analysis of Laser Strapdown Inertial Navigation System
成果达 1刘聪 2高关根 2王胜军 2严飞2
作者信息
- 1. 西北工业大学自动化学院,西安 710072,中国||中国航空工业集团公司西安飞行自动控制研究所,西安 710076,中国
- 2. 中国航空工业集团公司西安飞行自动控制研究所,西安 710076,中国
- 折叠
摘要
Abstract
This paper proposes a modeling and compensation method for the dynamic coning error parameters of the mechanical dithered laser gyroscope.Firstly,the causes of the dynamic coning error are analyzed in principle,and the deformation of the sensing axis of the laser gyroscope under different external angular acceleration inputs is provided.A compensation model of the dynamic coning error is later established,and the influence of the dynamic coning error is represented by the dynamic coning error coefficient,which is only related to the laser gyro.Then we propose a system level calibration scheme of the dynamic coning error coefficients considering the relationship between the attitude error of the system before and after the coning motion.The existence of the dynamic coning error,as well as the dynamic coning error compensation effect is proved via the coning motion experiment of laser gyroscope and fiber optic gyroscope.Finally,it is verified through the system level vibration test that the dynamic coning error compensation method can effectively reduce the attitude and speed errors of the system in the vibration environment,consequently improving the navigation accuracy of the inertial navigation system in the complex mechanical environment.关键词
机抖激光陀螺/捷联惯性导航系统/锥动误差/误差模型/参数标定Key words
mechanical dithered ring laser gyroscope/strapdown inertial navigation system/dynamic coning error/error model/parameter calibration分类
信息技术与安全科学引用本文复制引用
成果达,刘聪,高关根,王胜军,严飞..激光捷联惯性导航系统动态锥动误差建模分析[J].南京航空航天大学学报（英文版）,2023,40(6):641-652,12.
