ON UNCERTAINTY OF SENSORS BASED ON MAGNETIC EFFECTS

Vassilios Karagiannis – Aphrodite Ktena – Despoina M. Kepaptsoglou

   The contribution of magnetic hysteresis to the response of sensors based on magnetic phenomena and materials is investigated. Two different types of MDL based sensors, namely a displacement sensor and a load cell, were examined. The sensing cores used are based on amorphous FeSiB and polycrystalline Fe, Ni, FeNi wires. Hysteresis is lower in the case of amorphous materials even at low pulse fields or stress levels which lead to sensors with lower uncertainty levels.

Keywords: magnetic sensors, hysteresis modelling, MDL sensors, load sensors, position sensors

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