Device for measuring a linear position

A measuring device for measuring a linear position of a target, comprising:

• a magnetic circuit comprising a first armature element and a second armature element, positioned one on either side of an axis X and manufactured with at least one ferromagnetic material;
• a magnet disposed between the first armature element and the second armature element, such that a first pole of the magnet is positioned next to the first armature element, and that a second pole of the magnet is positioned next to the second armature element;
• a rod configured to be secured to the target and inserted between the first armature element and the second armature element to slide along the axis X, the rod having a variable section along its length, such that a magnetic flux in the magnetic circuit depends on a linear position of the rod along the axis X;
• at least one sensor configured to measure at least one parameter representative of the magnetic flux, and therefore of the linear position of the rod, and therefore of the linear position of the target;
• the first armature element and the second armature element each comprising a first portion and a second portion successively defined along an axis Y perpendicular to the axis X, the magnet and the sensor being positioned between the first portion of the first armature element and the first portion of the second armature element, and the axis X between the second portion of the first armature element and the second portion of the second armature element.