Patent ID: 7906959
Filing Date: 2011-03-15
Classification: G01D

Abstract:
1. A variable-reluctance analog position transducer configured to determine a position of a target, comprising: a target made of a ferromagnetic material, the target being rotationally mobile around a shaft perpendicular to an axis of magnetization of at least one magnet, the target including three spiral teeth, each disposed at an angle of 120°; the target and the at least one magnet defining between one another an air gap; and a magnetosensitive element detecting a magnetic induction caused by a presence of the target and related to the air gap between the target and the at least one magnet, wherein the at least one magnet has a unidirectional magnetization along a direction substantially perpendicular to a front surface of the at least one magnet bounding one edge of the air gap, the at least one magnet having a cavity opening on the front surface of the at least one magnet, the magnetosensitive element being seated in the cavity, the target having a geometric configuration such that the induction as a function of the position of the target corresponds to a predefined linear function.