一种提高MEMS微惯性航姿系统精度的方法设计与实现  

Design and Implementation to Improve Precision of MEMS Micro Inertial Attitude System

作　　者：魏爱娟[1] 

机构地区：[1]中国船舶重工集团公司第七一0研究所,宜昌443003

出　　处：《舰船电子工程》2017年第8期57-62,共6页Ship Electronic Engineering

摘　　要：为了满足小型水下航行器、小型飞行器需求,引入一种提高MEMS微惯性航姿系统精度的方法。该系统采用MEMS传感器获取载体姿态运动信息,通过姿态解算,可实时输出姿态参数,为载体控制系统提供输入;此外,针对MEMS精度和稳定性方面难以满足系统要求,以TMS320VC33为运算平台,采用卡尔曼滤波和加计调平技术对系统进行动静态修正,提高了系统测量精度。实践表明,以ADIS16488 IMU为核心敏感元件的MEMS微惯性航姿系统能够准确地测量载体姿态,其姿态角测量精度满足静态低于1°/20min、动态低于2°/20min。In order to meet the needs of small underwater vehicles and small aircraft,a method to improve the accuracy of MEMS micro inertial attitude system is introduced. MEMS sensor which measures the attitude motion information of the carrier is applied in system, through the attitude calculation, the system that provides input parameters for carrier control system real-time out-puts attitude parameters. In addition, due to MEMS accuracy and stability is difficult to meet the system requirements, TMS320VC33 is used as computing platform in micro inertial attitude system , combining with Kalman filter and accelerometer correction technology to correct static and dynamic parameter which improves the system measurement accuracy. The experimental results show that the MEMS attitude and heading system which applied ADIS16488 as core sensitive element can accurately measure parameters of the carrier, and its attitude measurement accuracy is less than 1 ° / 20min and less than 2 ° / 20min.

关 键 词：MEMS DSP ADIS16488IMU 卡尔曼滤波 加速度计修正 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]