A Novel Gyrocompass Alignment Method Under Large Azimuth Misalignment Angle  

作　　者：魏凤梅 张健沛 杨静 姜述强 谢松霖 

机构地区：[1]College of Computer Science and Technology,Harbin Engineering University [2]School of Technology,Harbin University [3]College of Automation,Harbin Engineering University [4]7801 Institute

出　　处：《Journal of Shanghai Jiaotong university(Science)》2015年第5期558-564,共7页上海交通大学学报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.51307026,61370083,61073043 and61073041);the Harbin Special Funds for Technological Innovation Research(No.2013RFQXJ117);the National Research Foundation for the Doctoral Program of Higher Education of China(Nos.20112304110011 and20122304110012)

摘　　要：Conventional gyrocompass alignment methods are based on relatively small azimuth misalignment angles.However,a marine strapdown inertial navigation system may face large azimuth misalignment angle caused by a failed coarse alignment algorithm.This paper provides a novel gyrocompass alignment method to solve the problem.Effects of system parameters are analyzed and the proper scenario of parameter switch based on the classic control theories is derived.Test results show that compared with the conventional methods,our method can accomplish the initial alignment quickly and accurately under large azimuth misalignment angle.Conventional gyrocompass alignment methods are based on relatively small azimuth misalignment angles.However,a marine strapdown inertial navigation system may face large azimuth misalignment angle caused by a failed coarse alignment algorithm.This paper provides a novel gyrocompass alignment method to solve the problem.Effects of system parameters are analyzed and the proper scenario of parameter switch based on the classic control theories is derived.Test results show that compared with the conventional methods,our method can accomplish the initial alignment quickly and accurately under large azimuth misalignment angle.

关 键 词：strapdown inertial navigation system alignment 

分 类 号：U666.1[交通运输工程—船舶及航道工程]