J. Phys. IV France
Volume 08, Numéro PR2, June 1998
Soft Magnetic Materials 13
Page(s) Pr2-821 - Pr2-824
Soft Magnetic Materials 13

J. Phys. IV France 08 (1998) Pr2-821-Pr2-824

DOI: 10.1051/jp4:19982190

A new permanent magnet angular position sensor

A. Foggia, J.-P. Yonnet and S. Adenot

Laboratoire d'Électrotechnique de Grenoble, UMR 5529 du CNRS, INPG/UJF, ENSIEG, BP. 46, 38402 Saint-Martin-d'Hères cedex, France

This paper present a new structure of a magnetic sensor. The output signal is proportional to the angular position. The originality of the structure comes from is desing that permits the measurement of the sum of two magnetic inductions which is a constant. This allows the output signal to be insensitive to some external parameters such as the temperature. The hysteresis of the soft magnetic materials generates a hysteresis in the output signal of the sensor. Low coercive field materials must be used, like Fe Ni, to limit this effect. However, this does not affect sensibly the total cost of the sensor.

© EDP Sciences 1998