加速度计交叉耦合系数高精度标定  

Precise Calibration for Accelerometer Cross Coupling Coefficient

作　　者：徐仕会[1] 

机构地区：[1]中航工业西安飞行自动控制研究所,陕西西安710065

出　　处：《指挥控制与仿真》2016年第3期136-139,共4页Command Control & Simulation

摘　　要：为了在1g重力场用转台标定惯性导航系统加速度计交叉耦合系数,提出基于正交多位置递推滤波算法标定加速度计的方案,通过建立正交多位置标定模型,抑制了转台误差对标定精度的影响,设计基于马尔科夫递推估计滤波算法,克服了一般最小二乘集中估计中多维矩阵求逆算法误差。仿真结果表明通过28位置标定,加速度计交叉耦合系数标定精度可达到10^(-7)g·g^(-2)(RMS)量级。For calibrating the cross coupling coefficient of inertial navigation system accelerometer in 1g gravity field by means of turntable precisely,a calibration method based on recursive filter at perpendicular multi-positions has been presented in this paper. The influence of turntable error has been restrained effectively in virtue of a perpendicular multi-positions calibration model. An algorithm filter based on Markov recursive estimation is established. The multi-dimensions matrix inverse algorithm error which is existed in least square estimation has been overcome. The simulation results show that a 10^（-7）g /g^2（ RMS） calibration precision of cross coupling coefficient can be reached by dint of twenty-eight positions calibration.

关 键 词：加速度计标定 交叉耦合系数 递推滤波 

分 类 号：TN967[电子电信—信号与信息处理]