基于偏振光与MEMS陀螺的航向角测量系统设计  

Design of heading angle measurement system based on polarized light and MEMS gyroscope

作　　者：支炜[1] 褚金奎[1] 王寅龙[1] 

机构地区：[1]大连理工大学精密与特种加工教育部重点实验室,辽宁大连116024

出　　处：《传感器与微系统》2015年第1期104-106,共3页Transducer and Microsystem Technologies

基　　金：国家重点基础研究发展规划资助项目(2011CB302101;2011CB302105);国家自然科学基金资助项目(51175056)

摘　　要：针对飞行器控制中MEMS陀螺存在噪声干扰和测量误差,以及其误差随时间累积的缺点,采用偏振光传感器作为量测信息,对其航向角信息进行矫正。详细介绍了偏振光传感器的测量原理,并建立MEMS陀螺与偏振光传感器误差的数学模型,在此基础上采用简单有效的直接卡尔曼滤波方法进行数据融合。室内精密转台实验测量结果表明:偏振光传感器可以有效地修正角速度陀螺的航向信息,经过280 s的实验,误差由原来的36.27°下降为6.05°,此最优估计航向角可以为飞行控制提供精确的数据信息。Aiming at existence of noise interference and measurement error in MEMS gyro for aircraft control, and the error will accumulate with time, employs polarized light sensor as measurement information to correct heading angle information of aircraft. Describe measurement principle of polarized light sensor in detail and set up mathematical model for MEMS gyroscope and polarized light sensor error,on this basis ,simple and effective direct Kalman filtering is used for data fusion. Measurement result of indoor precise turntable experiment indicates that polarized light sensor can effectively correct heading information of angular velocity gyro, after 280 s, the error dropps from 36, 27~ to 6.05~ ,the optimal estimation heading angle can provide accurate data information for flight control.

关 键 词：卡尔曼滤波 数据融合 航向角测量 偏振光传感器 

分 类 号：V249[航空宇航科学与技术—飞行器设计]