Variable reluctance position sensor
1 Assignment
0 Petitions
Accused Products
Abstract
A variable reluctance analog position device designed to determine the position variation of a target made from a ferromagnetic material. The device includes at least one magnet, the target and the magnet defining a gap therebetween. A magnetosensitive element detects induction variation produced in the gap by relative movement of the target relative to the magnet. The magnet is magnetized in a direction essentially perpendicular to the front surface of the magnet, which defines one edge of the gap. The magnet includes a cavity open at the front surface thereof and the magnetosensitive element is housed in the cavity. Moreover, the target is provided with a specific geometric configuration determined such that the induction variation according to the position of the target corresponds to a pre-defined function.
-
Citations
34 Claims
-
1-17. -17. (canceled)
-
18. A variable-reluctance analog position transducer configured to determine a variation of position of a target, comprising:
-
a target made of a ferromagnetic material;
at least one magnet, the target and the magnet defining between one another an air gap;
a magnetosensitive element detecting a variation of induction caused in the air gap by displacement of the target relative to the magnet, wherein the magnet is magnetized along a direction substantially perpendicular to a front surface of the magnet bounding one edge of the air gap, the magnet having a cavity opening on the front surface of the magnet, the magnetosensitive element being seated in the cavity, the target having a geometric configuration such that the variation of induction as a function of the position of the target corresponds to a predefined function. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
-
Specification