• Patent Title: Inductive movement sensors
  • Application No.: US15542462
    Application Date: 2016-01-13
  • Publication No.: US10564007B2
    Publication Date: 2020-02-18
  • Inventor: Yohan ManioulouxGor Lebedev
  • Applicant: HUTCHINSON
  • Applicant Address: FR Paris
  • Assignee: HUTCHINSON
  • Current Assignee: HUTCHINSON
  • Current Assignee Address: FR Paris
  • Agency: Young & Thompson
  • Priority: FR1550229 20150113
  • International Application: PCT/FR2016/050052 WO 20160113
  • International Announcement: WO2016/113498 WO 20160721
  • Main IPC: G01D5/20
  • IPC: G01D5/20
Inductive movement sensors
Abstract:
An inductive movement sensor is provided including: a transducer including a primary winding suitable for producing a magnetic excitation, and a secondary winding including at least one turn, suitable for applying an electromotive force across the terminals thereof in the presence of the excitation; and a target including at least one conductive pattern, the target being suitable for moving parallel to the transducer such as to cause variations in the surface of a portion of the pattern located opposite the at least one turn, thereby causing variations in the amplitude of the electromotive force induced in the secondary winding, in which the target-transducer distance is between 0.8 and 1.5 times the optimum target-transducer distance in terms of linearity, or the distance for which the linearity error of the curve representative of the variation in amplitude as a function of the surface variation is minimal.
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