| 摘要 |
The device comprises a stator (2), a rotor (1) composed of a magnetised disc (4) and of a first plate (5) made of a soft magnetic material covering one face of the disc (4), and a module (24) fixed on the stator (2) opposite the other face of the disc (4), by way of a second plate (6) also made of a soft magnetic material.
<??>The module (24) is a silicon platelet containing an integrated control circuit and, on its face disposed opposite the rotor (1), flat coils connected to the circuit and crossing the field created by the rotor.
<??>The coils, formed by a single layer of turns, are constructed during the process of manufacturing the integrated circuit, the metallisation mask used in this process containing, for this purpose, the design of the conductors forming the turns of the coils and of the connections between the circuit and these coils.
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