Bearing comprising an angular movement sensor

Bearing comprising a bearing ring and an inductive angular displacement sensor of said bearing ring, said inductive sensor comprising:

• a transducer including at least one primary winding suitable for producing a magnetic excitation, and at least one secondary winding including at least one turn, suitable for supplying an electromotive force at the terminals thereof in the presence of said excitation;
• a target suitable for moving parallel with the transducer;
• and
• said target being formed from a single conductive metal part and comprising a face with a base wall and one or a plurality of metal studs projecting from this base wall, said target being oriented towards the transducer of the inductive sensor, said studs thereby forming conductive patterns;
• wherein said target is fastened firmly to the bearing ring, for which the angular displacement is measured by the transducer, or the target is machined directly in the bearing ring for which the angular displacement is measured by the transducer;
• and
• wherein the conductive patterns are distributed along a zone having a dimension Dtot in a circular direction, said patterns being defined by the overlay of at least a first set of elementary periodic patterns having a period approximately equal to Dtot/N, including N first elementary conductive patterns of a dimension approximately equal to Dtot/2N in said direction, regularly distributed along said zone, and of a second set of elementary periodic patterns having a period approximately equal to Dtot/(N+r), including N+r second elementary patterns of a dimension approximately equal to Dtot/2(N+r) in said direction, regularly distributed along said zone, where N is an integer greater than or equal to 2 and r is a positive integer, different to zero and less than or equal to N−1, wherein the first and second elementary conductive patterns overlap at least partially.