Position measuring device and method for determining a position
AssigneeJohannas Heidenham GmbH
InventorsHerbert Huber-Lenk, Jorg Drescher, Mathias Hausschmid, Herbert Reiter, Johann Streitwieser, Wolfgang Holzapfel
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Abstract
A method for position determination in a position measuring device that includes digitizing analog position data from a detector unit within time intervals of an internal clock rate and calculating position data from the digitized data. Determining a period of time Δt between a pulse of said internal clock until an appearance of an external trigger signal and a processing of at least two position data, together with the period of time Δt.
Claims9
A position measuring device for determining the position of a moved object, having a detector unit (2), at least one A/D converter (3) controlled by an internal clock (6), a processing unit (4), and an extrapolation unit (5), and in addition a timer (7) for detecting the period of time Δt between a pulse of the internal clock (6) and an external trigger signal (9).
A method for position determination in a position measuring device, containing the following steps:
- digitizing analog position data from a detector unit (2) in an A/D converter (3) within time intervals of an internal clock rate (6),
- calculation of position data from the digitized data in a processing unit (4),
- determination of a period of time Δt between a pulse of the internal clock (6) until the appearance of an external trigger signal (9) in a timer (7),
- processing of at least two position data (P1, P2), together with the period of time Δt in an extrapolation unit (5).
Dependencies are inferred from the claim text.