Offset drift in orthogonal fluxgate and importance of closed-loop operation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F22%3A00358258" target="_blank" >RIV/68407700:21230/22:00358258 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.sna.2022.113583" target="_blank" >https://doi.org/10.1016/j.sna.2022.113583</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sna.2022.113583" target="_blank" >10.1016/j.sna.2022.113583</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Offset drift in orthogonal fluxgate and importance of closed-loop operation

Popis výsledku v původním jazyce

In this paper we show an up-to-now unexplained source of offset drift affecting the fundamental mode orthogonal fluxgate. After a sudden change or removal of the magnetic field, we observe an offset transient which lasts units to hundreds of seconds. We exclude the thermal origin of such transient as well as the electric origin in the pick- up coil resonance circuit or sensing amplifiers. We prove that this transient has magnetic origin, since it depends on both the amplitude and the duration of the pulse of magnetic field applied to the sensor which can be expressed as magnetic energy. We conclude that operating the fundamental mode orthogonal fluxgate in a closed feedback-loop is useful by suppressing this transient behavior by keeping the core in a (almost) zero field, however when switching the magnetometer sensor on/off, this transient has to be taken into account.

Název v anglickém jazyce

Offset drift in orthogonal fluxgate and importance of closed-loop operation

Popis výsledku anglicky

In this paper we show an up-to-now unexplained source of offset drift affecting the fundamental mode orthogonal fluxgate. After a sudden change or removal of the magnetic field, we observe an offset transient which lasts units to hundreds of seconds. We exclude the thermal origin of such transient as well as the electric origin in the pick- up coil resonance circuit or sensing amplifiers. We prove that this transient has magnetic origin, since it depends on both the amplitude and the duration of the pulse of magnetic field applied to the sensor which can be expressed as magnetic energy. We conclude that operating the fundamental mode orthogonal fluxgate in a closed feedback-loop is useful by suppressing this transient behavior by keeping the core in a (almost) zero field, however when switching the magnetometer sensor on/off, this transient has to be taken into account.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/GA20-19686S" target="_blank" >GA20-19686S: Analýza původu šumu u senzorů typu fluxgate</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Sensors and Actuators A: Physical

ISSN

0924-4247

e-ISSN

1873-3069

Svazek periodika

342

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

000807423100003

EID výsledku v databázi Scopus

2-s2.0-85131222837