| 摘要 |
<p>The invention concerns a variable reluctance multichannel device for measuring the rotational speed of a rotating member coupled to a toothed wheel (16) made of ferromagnetic material comprising a plurality of sensing elements (12A, 12B, 12C) and a common magnetic energizing element (14) including a pole piece (20) made of ferromagnetic material and a permanent magnet (18) including several cells (39) provided with central studs for supporting said plurality of sensing elements.</p> |
