A method for the suppression of stray field influences of current-carrying conductors on systems for the measurement of angles by means of x / y hall - sensors and permanent magnet

摘要

A device (10) for determining a disturbance in the vicinity of a sensor is described. The apparatus (10) has a multipole - permanent magnet (60) having an even number of four or more poles in. The multipole - permanent magnet (60) generates a magnetic field (65) with magnetic field - vectors (67). Two vertical hall - sensors (40a and 40b) are arranged in two positions on a circular path (50) arranged in such a way that the sum of the magnet - vectors (67) in each case at the two positions (55) is zero.