电子罗盘水平状态下航向角误差补偿算法的研究

Research of Electronic Compass Heading Angel Error Compensation Algorithm under Horizontal State

摘要:

针对电子罗盘测量时存在传感器的零位、灵敏度误差和干扰磁场引起的航向角误差问题,应用一种航向角误差补偿算法进行校正；在分析了电子罗盘航向角测量的工作原理、航向角误差形成原因的基础上,详细阐述了该补偿算法的实现原理,并通过LbVIEW软件仿真验证；同时设计了两种测量方案和测试系统,利用HMC1043芯片的电子罗盘进行多次实测验证并得出结论；实验结果表明:补偿后电子罗盘测量的航向角误差在4.5°以内；该补偿算法补偿效果良好,实现简单。

Abstract:

A heading angle error compensation algorithm,which deals with the existing problem of electronic compass heading angle error caused by sensor’s zero error,sensitivity error and disturbing magnetic error, is applied.The principle of compensation algorithm implementation is elaborated on the basis of analyzing the working principle of electronic compass heading angle measurement and the reasons of heading angle error formed, and this compensation algorithm is also simulated with LabVIEW.Two measurement solutions and test systems are designed at the same time,and the conclusion is drawn according to lots of measurement and verification with electronic compass of HMC1043 chip.The results show that electronic compass heading angle error that has been compensated is less than 4.5°.The compensation algorithm has a good compensation effect and is esay to implement.