Assembly comprising at least a first motor, a second motor and an angular position sensor

An assembly comprising at least a first motor (10) and a second motor (20) on which identical first targets (13) and identical second targets (23) being respectively mounted, the first targets (13) and the second targets (23) are respectively distributed angularly over the first motor (10) and over the second motor (20), respectively with a first angular spacing (β1) and a second angular spacing (β2) between two consecutive first targets (13) and two consecutive second targets (23), each first target (13) having a first angular aperture (λ1), each second target (23) having a second angular aperture (λ2), the assembly furthermore having an angular position sensor (5) positioned between said motors (10, 20) and adapted to measure the angular position of said targets (13, 23), said angular position sensor (5) comprising:

• a printed circuit board (50) defining a detection window (F) of said first targets (13) and of said second targets (23),
• at least a first set (1) of receiver windings (1S, 1C) for detecting said first targets (13) and a second set (2) of receiver windings (2S, 2C) for detecting said second targets (23) in said detection window (F), said receiver windings (1S, 1C, 2S, 2C) extending angularly,
• each set of receiver windings (1, 2) having a sine receiver winding (1S, 2S) adapted to generate a sine signal when a target (13, 23) is detected and a cosine receiver winding (1C, 2C) adapted to generate a cosine signal when a target (13, 23) is detected,
• each receiver winding (1S, 1C, 2S, 2C) alternately having at least one turn oriented positively and one turn oriented negatively, each turn being formed on said printed circuit board (50) and having an angular aperture, and
• at least one emitter winding (4) adapted to induce an electric voltage in said receiver windings (1S, 1C, 2S, 2C),
• the assembly being characterized in that:
• the angular aperture of a turn (M1) of the sine receiver winding (1S) of the first set (1) is a multiple 2n of the angular aperture of a turn (M2) of the sine receiver winding (2S) of the second set (2), n being an integer,
• the first angular aperture (λ1) of a first target (13) of the first motor (10) is a multiple 2n of the second angular aperture (λ2) of a second target (23) of the second motor (20), n being an integer,
• the angular aperture of a turn (M1) of the sine receiver winding (1S) of the first set (1) is defined as claimed in the following formula:
• 2×M1=λ1+β1
• with:
• λ1:
• the first angular aperture of a first target (13) of the first motor (10);
• β1:
• the first angular spacing between two consecutive first targets (13) and
• the angular aperture of a turn (M2) of the sine receiver winding (2S) of the second set (2) is defined as claimed in the following formula:
• 2×M2=λ2+β2
• with
• λ2:
• the second angular aperture of a second target (23) of the second motor (20);
• β2:
• the second angular spacing between two consecutive second targets (23).