基于某种无陀螺惯性测量单元的安装误差补偿  

Installation Error Compensation of an Allocation Scheme of GFIMU

作　　者：刘涛[1] 赵国荣[1] 徐珂文[1] 

机构地区：[1]海军航空工程学院,山东烟台264001

出　　处：《弹箭与制导学报》2012年第6期154-158,共5页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：教育部新世纪优秀人才支持计划(NCET-04-1001)资助

摘　　要：加速度计的安装误差对无陀螺惯性测量单元的精度影响十分显著。分析了一种典型的九加速度计配置方案,针对其构型特点,讨论了加速度计的安装方向和位置误差,给出了标定方法和误差计算公式,采用总体最小二乘法求解其中的超定方程,并设计了补偿方案。仿真试验结果表明该补偿方案将角速度解算误差的均值和方差均减小2个数量级,消除89.5%的东向导航误差。The installation error of accelerometer has great influence on the precision of gyroscope free inertial measurement unit（GFIMU）.A typical allocation scheme with 9 accelerometers was analyzed.Based on its configuration characteristic,the orientation and location errors of accelerometers were discussed.Then a calibration idea and calculating formula of error were put forward and the total least squares was adopted to solve the problem of over-determined equation.Then a compensation scheme was designed.Different calculating methods of angular-rate（assistant method and intelligent weighted method） were used in the simulation.The result shows that the compensation scheme can reduce the mean and variance of calculating error by two orders of magnitude and eliminate 89.5% of navigation error.

关 键 词：无陀螺惯性测量单元 加速度计安装误差 标定 补偿 

分 类 号：V241.62[航空宇航科学与技术—飞行器设计]