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LINEAR POSITIONING SYSTEM UTILIZING HELICALLY POLARIZED MAGNET

  • US 20150247903A1
  • Filed: 03/03/2014
  • Published: 09/03/2015
  • Est. Priority Date: 03/03/2014
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a helically polarized magnet having a plurality of north and south poles circumferentially and helically patterned along a linear axis, wherein magnetic flux varies at different positions along a linear path in a direction aligned with the linear axis; and

    a multi-axis magnetometer configured with at least two sensing coils to detect the position of the helically polarized magnet by sensing the magnetic flux variations at the different positions along the linear path.

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