国防科技大学学报2011，Vol.33Issue(2)：33-37,5.
带减振器机抖激光陀螺惯性测量单元标定方法研究
Research on Calibration Method for Dither RLGs Inertial Measurement Unit with Shock Absorbers
摘要
Abstract
Because of the deformation of shock absorbers, the dither RLGs imrtial measurement unit ( IMU) can not be c alilnated using a precise tuntable as attitude reference. This palper inimduces a new calibratim method RLGs, IMU, firstly, the RLGs were turned off and the IMU without absorbers was fastened on a pmeise turntabde to calibrate the error parmenters of accelerometers; then the shock absorbers were installed on IMU, peper designed a procedure for the ealibration of RIGs error parameters. Fttrther mores,aeeotding to the output error equation of the RLGs, a systematic calibration algorithm of the RLGs IMU was proposed based on a 21dimensional kalman filter using velocity errors as measurement vector. The simulation results indicate, that the novel calibration method can accurately identify RLGs scale,factor errors,drifts,misalignments,errors and accealerometers drifts. and the accuracy of this methodsatisfy the requirements of high precision. inertial navigation system.关键词
机抖陀螺/减振器形变/系统级标定/误差参数辨识/Kalman滤波Key words
mechanically dithered RLGs/ shock absorbers deformation/ systerantic. calibration/ error. parameter calibration/Kalman filter分类
信息技术与安全科学引用本文复制引用
吴赛成,秦石乔,王省书,胡春生..带减振器机抖激光陀螺惯性测量单元标定方法研究[J].国防科技大学学报,2011,33(2):33-37,5.基金项目
国家"863"高技术计划资助项目(2006AA09Z208) （2006AA09Z208）
