Induktiver Kodierer

Details

Veröffentlichungs-Nr.

EP4741773

Anmeldetag

6. November 2024

Veröffentlichung

13. Mai 2026

Rechtsraum

EP

IPC

G01D5/20(RISSING LUTZ et al.)(AISAN IND et al.)

Abstract

An inductive encoder comprising first and second members relatively moveable along a measurement direction, configured such that: the first member has, arranged at or toward a front side thereof which faces the second member, at least a first scale track; and such that the second member has, arranged at or toward a front side thereof which faces the first member: an excitation coil through which an alternating current is passed at a predetermined operating frequency so as to generate an alternating magnetic field which is manipulated by the first scale track; and at least a first receiver coil for sensing the alternating magnetic field as manipulated by the first scale track, via which the relative position of the first and second members along the measurement direction can be measured. The inductive encoder is further configured such that: i) the first member comprises magnetically permeable material having a relative magnetic permeability µr of at least 2 at said operating frequency so as to increase, at least at the first scale track, the magnetic flux density of the magnetic field generated by the excitation coil; and/or ii) the second member comprises magnetically permeable material having a relative magnetic permeability µr of at least 2 at said operating frequency so as to increase, at least at the first scale track, the magnetic flux density of the magnetic field generated by the excitation coil.

Anmelder

Firma

Renishaw plc

Land

🇬🇧 Großbritannien