Position encoder comprising a plastic element
AssigneeSumida Components & Modules GmbH
InventorsRudolf Kronowitter, Willi Wimmer
Life of this patent
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Abstract
Disclosed is a position sensor, in particular a rotor position sensor, comprising a base. A track that is provided with a conducting coating is formed within the surface of the base relevant for evaluating signals. Since the track is formed within the base, the desired position-dependent modulation of the eddy current behavior is obtained by design measures, resulting in low manufacturing tolerance and reduced production costs.
Claims31
A position encoder for generating position-dependent eddy-current losses in a sensor coil assembly, comprising:
- a base made of plastics with a surface to be oriented during operation in the direction of the sensor coil assembly;
- a track foamed in the base by recesses and/or elevations in the surface of plastics, which extends along a predetermined direction of movement and varies at least in a direction perpendicular to the predetermined direction of movement;
- and
- a coating which is provided at least on the track and comprises a conductive material.
The position encoder for generating position-dependent eddy-current losses in a sensor coil assembly, comprising:
- a base composed of non-conducting carrier material and a conducting material;
- a track defined by the conducting material, which is embedded in the non-conducting material and extends along a predetermined direction of movement and varies at least in a direction perpendicular to the predetermined direction of movement for position-dependent eddy-current generation.
Dependencies are inferred from the claim text.