Precise AMR magnetometer for compass

Proceedings of IEEE Sensors 2003 (IEEE Cat. No.03CH37498) Pub Date : 2003-10-22 DOI:10.1109/ICSENS.2003.1278983

A. Platif, J. Kubík, M. Vopálenský, P. Ripka

引用次数: 22

Abstract

AMR sensors gain growing popularity in linear applications such as compassing (Tumaski and Ripka). We discuss techniques, how to achieve precision required for 0.2 deg azimuth error in wide temperature range. While linearity of 80 ppm FS and sensitivity tempco of 20 ppm/K can be achieved by using feedback compensation, offset drift and crossfield error can be lowered to nT level by periodical flipping.

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精密AMR罗盘磁强计

AMR传感器在线性应用中越来越受欢迎，如罗盘(Tumaski和Ripka)。我们讨论了如何在宽温度范围内达到0.2度方位误差所需的精度。采用反馈补偿可以实现80 ppm FS的线性度和20 ppm/K的灵敏度，而通过周期性翻转可以将偏移漂移和交叉场误差降低到nT级。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of IEEE Sensors 2003 (IEEE Cat. No.03CH37498)

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