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US 2001/0017349 A1Published application
Position measuring system
AssigneeJohannes Heidenhain GmbH
InventorsWolfgang Holzapfel, Ullrich Benner
Life of this patent
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Abstract
A position measuring system that includes a scale having an incremental track, which extends in a measuring direction and has an incremental graduation with two different graduation periods. A scanning unit moves in relation to the scale in a measuring direction, the scanning unit has an incremental signal detection arrangement, wherein the incremental signal detection arrangement generates incremental signals with a first coarse signal period and generates incremental signals with a second finer signal period.
Claims27
A position measuring system comprising:
- a scale comprising an incremental track, which extends in a measuring direction and comprises an incremental graduation with two different graduation periods;
- a scanning unit which moves in relation to the scale in a measuring direction, the scanning unit comprises an incremental signal detection arrangement;
- wherein the incremental signal detection arrangement generates incremental signals with a first coarse signal period and generates incremental signals with a second finer signal period.
Dependencies are inferred from the claim text.