Impulse ring for a bearing assembly, bearing assembly comprising such an impulse ring and rotary electrical machine comprising such a bearing assembly

A bearing assembly (A) comprising:

• a rotatable ring,
• a non-rotatable ring and
• an impulse ring having:
• a rotative element on which the impulse ring is mounted, rotatable with respect to a fixed sensing element adapted to detect a magnetic field (Br) generated by the impulse ring, the impulse ring having at least one pair of magnetic poles (N, S) or at least one magnet with north poles (N) and south poles (S) alternatively arranged along the circumference of the impulse ring, wherein
• the intensity of the magnetic field (Bnp) generated by the north poles (N) is different from the intensity of the magnetic field (Bsp) generated by the south poles (S).

A rotary electrical machine (EM) such as a motor and/or a generator, self-generating or being immersed, in operation, in a disturbing magnetic field (Bd), and comprising:

• a stator (22),
• a rotor (12),
• a bearing assembly (A) having a rotatable ring,
• a non-rotatable ring and
• an impulse ring having;
• a rotative element on which the impulse ring is mounted, rotatable with respect to a fixed sensing element adapted to detect a magnetic field (Br) generated by the impulse ring, the impulse ring having at least one pair of magnetic poles (N, S) or at least one magnet with north poles (N) and south poles (S) alternatively arranged along the circumference of the impulse ring, wherein
• the intensity of the magnetic field (Bnp) generated by the north poles (N) is different from the intensity of the magnetic field (Bsp) generated by the south poles (S), and
• a sensor for reading the impulse ring, wherein
• the bearing assembly (A) supports the rotor with respect to the stator and wherein the sensor delivers a signal for controlling the rotation of the rotor.

A rotary electrical machine (EM) such as a motor and/or a generator, self-generating or being immersed, in operation, in a disturbing magnetic field (Bd), and comprising:

• a stator (22),
• a rotor (12), and
• a bearing assembly (A) having a sensor adapted to read the impulse ring, wherein
• the bearing assembly (A) supports the rotor with respect to the stator and wherein the sensor delivers a signal for controlling the rotation of the rotor.