摘要
提出了一种基于椭球拟合原理的三轴加速度计在线标定补偿方法,在分析加速度计误差产生机理的基础上,建立三轴加速度计误差模型,根据椭球拟合原理实现了对三轴加速度计的测试标定,并给出了与之对应的标定及补偿方案。试验结果表明:该标定方法能够在较短时间内准确估计三轴加速度计的各项标定参数;标定过程简单,环境要求较低,可在缺少精密标定设备环境下(如靶场)进行;其标定精度与转台标定结果精度相当,补偿精度满足实际数据解算要求。
An online error calibration compensation method of three-axis accelerometer based on the ellipsoid fitting was proposed. The three-axis accelerometer error model was firstly established on the basis of analyzing the error model of three-axis accelerometer. Then the ellipsoid fitting method for the three-axis accelerometer error calibration and compensation was proposed, and the online calibration scheme and the compensation method were given. The experimental results show that the proposed method with the advantage of easily-operation, time-saving and low environmental requirements can accurately estimate the calibration parameters of three-axis accelerometer. Furthermore, the proposed field calibration method can be used in the environment without precision calibration equipment for field calibration, and the calibration accuracy of the proposed method is equivalent to that using high-precision turntable. Finally, the compensation precision of the proposed field calibration method meets the requirements of the actual navigation calculation.
作者
冯凯强
李杰
魏晓凯
FENG Kaiqiang;LI Jie;WEI Xiaokai(Key Laboratory of Instrumentation Science & Dynamic Measure (North University of China)
出处
《兵器装备工程学报》
CAS
北大核心
2019年第4期186-189,201,共5页
Journal of Ordnance Equipment Engineering
基金
国家自然科学基金项目(51575500)
关键词
三轴加速度计
现场标定
误差建模
椭球拟合
标定补偿
标定参数
three-axis accelerometer
field calibration
error modeling
ellipsoid fitting
calibration and compensation
calibration parameter
