A NEW PERMANENT-MAGNET ANGULAR POSITION SENSOR

This paper presents a new structure of a magnetic sensor, The output s ignal is proportionnal to the angular position. The originality of the structure comes From its design that permits the measurement of the s um of two magnetic inductions which is a constant. This allows the out put signal to be insensitive to some external parameters such as the t emperature. The hysteresis of the soft magnetic materials generates a hysteresis in the output signal of the sensor. Low coercive field mate rials must be used, like Fe Ni, to limit this effect. However. this do es not affect sensibly the total cost of the sensor.