Abstract:PurposeThe purpose of this paper is to present a magnetic contactless displacement sensor with liftoff compensation. The sensor consists of two‐axis Hall sensor, moving permanent magnet (PM) and ferromagnetic substrate which is considered as a magnetic flux concentrator.Design/methodology/approachThe two Hall‐effect sensors are used to detect the BX and BY induced by the moving PM. The BX and BY curves reflect the nature of the liftoff and the displacement of the inducing PM, respectively. Then the model of th… Show more
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