Linear displacement measuring apparatus for determining an absolute position, and linear guide having such a displacement measuring apparatus

A linear displacement measuring apparatus for determining an absolute position includes a linear rail composed of individual rail segments arranged after one another in the direction of a longitudinal axis. Each of the rail segments has a material measure which comprises at least one incremental tra...

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1. Verfasser: Götz, Klaus-Dieter
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creator Götz, Klaus-Dieter
description A linear displacement measuring apparatus for determining an absolute position includes a linear rail composed of individual rail segments arranged after one another in the direction of a longitudinal axis. Each of the rail segments has a material measure which comprises at least one incremental track which extends along the longitudinal axis and has equidistantly arranged position markings. In addition to the incremental track, the material measure of one of the rail segments has an absolute track with position markings for coding a plurality of absolute positions. A scanning device can be moved along the rail segments and comprises a sensor arrangement for scanning the material measures with a first sensor, a second sensor and a third sensor. The first sensor and the second sensor are offset relative to one another in the direction of the longitudinal axis and are used to detect the position markings of the incremental track.
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subjects ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
PHYSICS
TARIFF METERING APPARATUS
TESTING
title Linear displacement measuring apparatus for determining an absolute position, and linear guide having such a displacement measuring apparatus
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