CAJ | 학술논문

电子罗盘是一种通过测量地球磁场获得载体航向角的设备。利用MEMS三轴磁阻传感器和Atmega128单片机设计了一种高集成度、低功耗、小型化的电子罗盘。介绍了电子罗盘的设计原理及其具体实现，分析了系统测量精度的误差来源，并通过最小二乘法对其进行误差补偿。实验结果表明，在对硬磁材料引起的半圆罗差和软磁材料引起的圆周罗差及象限罗差的误差补偿后，系统航向角误差可从±24珑．5°提高到±2．5°。
전자라반시일충통과측량지구자장획득재체항향각적설비。이용MEMS삼축자조전감기화Atmega128단편궤설계료일충고집성도、저공모、소형화적전자라반。개소료전자라반적설계원리급기구체실현，분석료계통측량정도적오차래원，병통과최소이승법대기진행오차보상。실험결과표명，재대경자재료인기적반원라차화연자재료인기적원주라차급상한라차적오차보상후，계통항향각오차가종±24롱．5°제고도±2．5°。
Electronic compass is a kind of device , which can acquire the heading angle by measuring earth′s magnetic field .A highly integrated , low-power consumption and miniaturized electronic compass is designed by using MEMS ( Micro-Electro-Mechanical Systems ) 3-axis magnetoresistive sensor and Atmega128 microcontroller .This paper introduces the principles of the electronic compass , analyses the systematic error sources , and computes the error compensation with least squared method .Experimental results show that the error of heading angle can be reduced from ±24.5°to ±2.5°after error compensa-tion for semicircular deviation caused by hard magnetic materials , circumferential deviation and quadran-tal deviation caused by soft magnetic material .