Patent ID: 7388368
Filing Date: 2008-06-17
Classification: G01D

Abstract:
1. An encoder for a position sensor, of the type including a multipolar magnetic ring ( 2 ) provided, on its circumference, with alternately positioned poles having polarities of opposite signs and intended to move past a measuring cell ( 3 ) delivering a periodic signal corresponding to the change in the intensity of the radial component of the magnetic induction delivered by the poles, the encoder including at least one junction (J) between one so-called small pole (P) and one so-called large pole (G), having an angular width larger than the angular width of the small pole, the small pole (P) and the large pole (G) corresponding to each junction (J) having polarities of opposite signs, characterized in that, for each junction (J), the large pole (G) of a given sign consists: