| 摘要 |
<p>The sensor comprises a field coil (2) generating a time-variant magnetic field, and sensor coils (3) arranged inside the field coil, a rotatable device (4, 5) being arranged for modulating the magnetic flux passing through the sensor coil according to its angular position. Each sensor coil comprises a magnetically permeable core (6) having a polar portion (7) facing the rotatable device. A portion (8) of a magnetically permeable sealing element (12) is arranged facing the rotatable device on the opposite side from said polar portion. The air gaps (9, 10) between said polar portion and rotatable device, and between said portion of the sealing element and said rotatable device, are wholly located substantially within the field coil (2).</p> |
