基于椭圆拟合误差补偿算法的数字磁罗盘  

Digital magnetic compass based on ellipse matching error compensation algorithm

作　　者：秦勇[1] 赵杰[1] 王晓宇[1] 

机构地区：[1]哈尔滨工业大学机器人研究所,哈尔滨150080

出　　处：《吉林大学学报（工学版）》2009年第2期489-493,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：长江学者和创新团队发展计划项目(IRT0423)

摘　　要：设计了一种基于磁阻传感器和加速度计的低成本的电子罗盘导航系统。介绍了电子罗盘的工作原理,并给出了航向角的计算方法,同时对电子罗盘的影响因素进行了说明。在利用硬件对采集的数据进行滤波处理以提高精度的同时,还采用了基于椭圆拟合误差补偿方法对磁罗差进行补偿。试验结果表明:椭圆拟合误差补偿方法补偿效果显著,系统性能稳定,适合于低速的便携导航应用。A magnetic compass system at low cost based on magnet-resistance sensor and accelerometer was designed The working mechanism of this compass was presented,and the method for the calculation of magnetic heading angle was given with the analysis of the errors that affects heading accuracy.In order to improve system accuracy,hardware filter was used in the processing of the collected data,in the same time,ellipse fitting method for the compensation of the magnetic deviation was applied.Experiment show that the...

关 键 词：自动控制技术 椭圆拟合 磁阻传感器 误差补偿 

分 类 号：TN965[电子电信—信号与信息处理]