罗经回路在船用航姿系统中的应用与工程实现  

Engineering Application and Implementation of Compass Loop in Attitude Heading Reference System

作　　者：孟祥涛[1] 蔡春龙 

机构地区：[1]北京航天控制仪器研究所,北京100854

出　　处：《中国舰船研究》2008年第6期61-65,共5页Chinese Journal of Ship Research

基　　金：国防基础科研项目(C0320060532)

摘　　要：由惯性导航原理的特性可知,纯惯性无阻尼航姿系统的误差将出现明显的周期性振荡,并随时间发散,如水平姿态误差体现出傅科周期调制舒勒周期振荡,方位误差体现出地球周期振荡。若在水平回路中加入阻尼网络,可使其舒勒周期振荡衰减,傅科周期振荡也将随之消失,再加入方位阻尼,就能完成内全阻尼网络的设计。文章将平台精对准中罗经回路的思想引入到捷联航姿系统中,并通过改变原有航姿算法以达到内全阻尼的目的,最后的数字仿真结果表明,该新算法可使航姿系统不依赖任何外部信息就能使姿态精度得到提高。The characteristic of inertial navigation system （INS） decides that the error of Attitude Heading Reference System （AHRS） without damping behaves evident cycle and accumulates with time. The attitude error behaves Foucault cycle oscillation modulates Schuler cycle oscillation and heading error behaves earth cycle oscillation. If damp network is added to the level loop to restrain Schuler cycle oscillation,the Foucauh cycle oscillation disappears. Then if the heading damp network is added to system, the design of complete damp is ：implemented. In this paper compass loop was used in stapdown AHRS and the existing algorithm was changed to realize the complete design of inner damp. Simulations results show that the new algorithm for Strapdown AHRS can improve the precision of the system without depending on any external information.

关 键 词：航姿系统 全阻尼 罗经回路 捷联惯性导航 

分 类 号：U666.12[交通运输工程—船舶及航道工程]