Creating a uniform magnetic field using axial coils system for calibration of magnetometers

Baranov, Pavel; Baranova, Vitalia; Uchaikin, S.; Pisarenko, Yana

doi:10.1109/dynamics.2016.7818973

Cited by 11 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This paper introduced the new design of the calibration device by using circular coils for a stable homogeneous magnetic field strength. The theoretical, simulation, and experimental methods [37]- [39] have examined the coils' magnetic field strength. The theoretical value can be deduced before the actual prototype by the present research work's design method.…”

Section: Discussionmentioning

confidence: 99%

Design of the Stable Homogeneous Magnetic Field Calibration Device Generated by the Circular Coils

Syu

Krishna²,

Yadav

et al. 2022

IEEE Access

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Design of the Stable Homogeneous Magnetic Field Calibration Device Generated by the Circular Coils

Syu

Krishna²,

Yadav

et al. 2022

IEEE Access

View full text Add to dashboard Cite

show abstract

“…Some researchers focus on the elimination of sensor errors. Reference [33] presented a design of axial 8-coils system based on Helmholtz coils, which allows to create a magnetic field with inhomogeneity is not more than 0.1% at a distance of half the radius of the geometric center of the coils system. The device corrects the magnetometer by the generated magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Online Correction Method for Ratio Methods by Using Geomagnetic Sensors Based on Kalman Filter

Wang

Liu

2019

IEEE Access

View full text Add to dashboard Cite

By eliminating the data offset caused by a disturbing magnetic field during the flying condition of a spinning projectile, an adaptive unscented Kalman filter is applied to estimate the actual data of a geomagnetic field and the false value introduced by a disturbing magnetic field. For the ratio methods related to geomagnetic attitude measurement, the physical significance of the ratios obtained by all ratio methods is clarified. A new definition for the ratio is presented to ensure online estimation and numerical stability. The variation in the sensor outputs along the lateral directions is suggested to be a harmonic motion with the assumption that the spindle is fixed or in slow motion. The true data employed as a reference for comparison is generated by a dynamics model for spinning objects and by projecting the geomagnetic field to the measurement frame. Signal gathering and data preprocessing are considered. A signal-disturbing ratio is introduced to indicate the proportions of the real geomagnetic signal and the interference signal in the data acquisition process. The algorithm of the adaptive unscented Kalman filter is discussed. Simulations are performed using a 1 kHz sample rate and a duration of 60 seconds. The filtering results supported by a conventional unscented Kalman filter and adaptive unscented Kalman filters are compared with actual data for the conditions of different signal-disturbing ratios and 10 shifts of the disturbing magnetic field. The results of the simulation indicate that the proposed adaptive unscented Kalman filter with the introduced state equation achieves better performance than other filters mentioned in the paper. The filter has the ability to provide clean data from the noisy data flow measured from a spinning projectile for the ratio methods based on the geomagnetic measurements. INDEX TERMS Geomagnetic measurement, attitude estimation, Kalman filter, data correction, ratio methods.

show abstract

“…Si se requiere mayor uniformidad del campo magnético se puede emplear un sistema rectangular de 5 bobinas, para mediciones biomagnéticas [9] [11]. Para calibrar magnetómetros en un campo magnético uniforme se encuentra un sistema de 8 bobinas de Helmholtz, donde la inhomogeneidad obtenida es menor a 0, 1% para z = a/2, [12]. Considere una espira donde circula una corriente eléctrica I constante en el tiempo.…”

Section: Introductionunclassified

El Campo Magnético Generado por las Bobinas de Helmholtz y sus Aplicaciones a Calibración de Sondas

Fano

Alonso

Quintana

2017

Elek.

View full text Add to dashboard Cite

Las bobinas de Helmholtz habitualmente se usan para establecer una zona de campo magnético conocido y uniforme para diversas aplicaciones. Es importante conocer la zona donde dicho campo magnético es uniforme con las distintas variables espaciales x, y, z. En la zona donde se genera un campo magnético uniforme, se pueden hacer las calibraciones de sensores magnéticos y sondas de campo magnético, en un rango de bajas frecuencias. Este trabajo se dedica a calcular y medir el campo magnético generado por las bobinas de Helmholtz y determinar la uniformidad y la exactitud del campo magnético respecto al centro de simetrı́a del sistema estudiado.

show abstract

Creating a uniform magnetic field using axial coils system for calibration of magnetometers

Cited by 11 publications

References 13 publications

Design of the Stable Homogeneous Magnetic Field Calibration Device Generated by the Circular Coils

Design of the Stable Homogeneous Magnetic Field Calibration Device Generated by the Circular Coils

Online Correction Method for Ratio Methods by Using Geomagnetic Sensors Based on Kalman Filter

El Campo Magnético Generado por las Bobinas de Helmholtz y sus Aplicaciones a Calibración de Sondas

Contact Info

Product

Resources

About