Position encoder
AssigneeSick Stegmann GmbH
InventorMassimo Francescon
Life of this patent
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Abstract
Position encoder for measuring a position containing a sensor 2, providing electrical signals representing the angular position, a measuring device for measuring the electrical signals and outputting at least one electrical position signal representing the angular position and signal processing means 3, processing the position signal, the signal processing means 3 exhibiting an adaptive filter comprising at least a speed estimator 5 outputting an estimated speed and connected in parallel a speed limiter 7 that depending from the estimated speed limits a change in the position signal.
Claims14
Position encoder (1) for measuring a position containing:
- a position sensor (2) configured to provide electrical signals representing angular position,
- a measuring device for measuring the electrical signals and configured to output at least one electrical position signal representing the position, and
- signal processing means (3) configured to process the position signal,
- wherein the signal processing means (3) comprise at least a speed estimator (5) configured to output an estimated speed and a dynamic speed limiter (7) configured to limit a change in the position signal depending on the estimated speed by calculating a range of position values possible at a current speed, the dynamic speed limiter connected in parallel to the speed estimator (5),
- and wherein the position signal is processed in parallel by the speed estimator (5) and the dynamic speed limiter (7).
Dependencies are inferred from the claim text.