| 摘要 |
The invention concerns a sensor-bearing unit (301), comprising: a bearing centered on a rotation axis (X1); a sensor device (10) including a differential detection cell which has a structural pitch (P10) and which defines a pitch plane (Δρ) extending along the structural pitch (P10) and along a reading direction; and an impulse ring (320) having a magnetic pattern which includes positive poles (321) and negative poles (322) separated by pattern borders (324) and which defines a tangent plane (At) perpendicular to the pitch plane (Δρ); the sensor device (10) and the impulse ring (320) being configured for tracking a rotation of the bearing around the rotation axis (XI), the differential detection cell of the sensor device (10) reading the magnetic pattern of the impulse ring (320) along the reading direction. According to the invention, each pattern border (324) projected in the tangent plane (Δt) defines a nonzero pattern angle (a320) relative to the pitch plane (Δρ). In this way, the magnetic pattern is inclined with regard to a line defined by the sensor cells, the angle of inclination determining an effective pitch of the sensor which can be adjusted to match the pitch of the magnetic pattern. The invention also concerns a mechanical system comprising such an impulse ring (320) and a method for manufacturing such an impulse ring (320). |
