A simple geomagnetic field compensation system for uniform magnetic field applications





uniform magnetic field, square Helmholtz coils, tri-axial Hall effect sensors, magnetic field control, geomagnetic field compensation


In this paper a simple geomagnetic field compensation system for uniform magnetic field applications of low magnitude and frequency is presented. The compensation system is based on an array of Tri-axial Square Helmholtz (TSH) coils, an array of tri-axial Hall effect sensors and a microcontroller system in order to compensate the small variations of the ambient magnetic fields (magnitudes close to the geomagnetic field between  25 μT and 65 μT) on a volume of interest. The geomagnetic field experimentally obtained of  39.5 μT was compensated, achieving a uniform magnetic field of approximately zero. Finally, the proposed system emerges as a simple alternative for control and compensation of magnetic fields in several applications.

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Author Biographies

Andrés Fernando Restrepo-Álvarez, University of Valle

Industrial Control Research Group, Faculty of Engineering.

Edinson Franco-Mejía, University of Valle

Industrial Control Research Group, Faculty of Engineering.

Héctor Cadavid-Ramírez, University of Valle

High Voltage Research Group (GRALTA), Faculty of Engineering.

Carlos Rafael Pinedo-Jaramillo, University of Valle

Research Group on Perception and Intelligent Systems, Faculty of Engineering.


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How to Cite

Restrepo-Álvarez, A. F., Franco-Mejía, E., Cadavid-Ramírez, H., & Pinedo-Jaramillo, C. R. (2017). A simple geomagnetic field compensation system for uniform magnetic field applications. Revista Facultad De Ingeniería Universidad De Antioquia, (83), 65–71. https://doi.org/10.17533/udea.redin.n83a09

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