| 摘要 |
The sensor, of the type including fixed electromagnetic means associated with a target having ferromagnetic patterns regularly distributed in steps thereon and joined to the member, the output of the electromagnetic means being connected to processing means delivering a displacement signal of the member, is characterised in that the electromagnetic means comprise at least two electromagnetic cells (3, 4) for measuring the displacement of the target, which cells are offset by a distance equal to an odd integer multiple of the half-step of the patterns of the target, and in that the processing means comprise means (14) for differential processing of the output signals of the cells. <IMAGE>
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