机抖式激光陀螺抖动效率影响因素研究  

Influence Factors of Dithering Efficiency of DRLG

作　　者：郭建刚 黄世涛[2] 李志华[2] 郑伟[1] GUO Jiangang;HUANG Shitao;LI Zhihua;ZHENG Wei(National University of Defense Technology,Changsha 410073,China;Beijing Aerospace Times Laser Inertial Technology Company,Ltd.,Beijng 100094,China)

机构地区：[1]国防科技大学空天科学学院,长沙410073 [2]北京航天时代激光导航技术有限责任公司,北京100094

出　　处：《空间控制技术与应用》2019年第6期73-78,共6页Aerospace Control and Application

基　　金：国家自然科学基金资助项目(0901010517001)~~

摘　　要：基于机抖式激光陀螺的捷联惯导系统是航天器控制系统的关键单机之一.抖动效率是表征机抖式激光陀螺性能的重要参数,实践证明惯导系统设计对陀螺抖动效率有重要影响.通过建立系统的动力学模型,针对各系统参数对陀螺抖动效率的影响规律进行了分析研究.研究表明多个系统参数对陀螺抖动效率有着显著影响,根据分析结果给出了具体的系统设计设计方法和原则,并在某型小型化惯导的设计中得到应用和验证.研究结论对机抖激光捷联系统的小型化和多表冗余设计有一定指导意义,并提供了一种在设计阶段对陀螺抖动效率进行预估的有效方法.DRLG SINS is a key unit for the control system of spacecraft.The dither efficiency of DRLG is an important parameter to characterize the gyro performance,and practice shows that the design of SINS has important influence on gyro ditheringr efficiency.In this paper,the influence of various system parameters on the dithering efficiency of DRLG is analyzed through the establishment of the dynamic model of the system.The research shows that multiple system parameters have a significant influence on gyro dithering efficiency.Based on the analysis results,specific system design methods and principles are given,and the results are applied and verified in the design of a miniaturized SINS.The research results are helpful to the miniaturization and multi-sensor redundancy design of SINS,and provide an effective method to predict the gyro dithering efficiency at the design stage.

关 键 词：机抖式激光陀螺 抖动效率 内减振 转动惯量比 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]