patentverein.de - Patente
Patentethik
Überwachung
Beispielhaft
Trivial
Kurios
Unverständlich
Zurück Original-Dokument
Europäisches Patentamt

Measurement apparatus, measurement method, and absolute encoder | Messvorrichtung, Messverfahren, und Absolutpositionsgeber | Appareil de mesure, procédé de mesure et codeur absolu

Patentnummer:EP2733469B1
IPC Hauptklasse:G01D0005347
Anmelder:
Erfinder:
Anmeldung:17.10.13
Offenlegung:15.11.12
Patenterteilung:19.06.19

Abstract / Hauptanspruch
A measurement apparatus includes: a detector (PDA) which detects modulated light from the target object and outputs a periodic pattern signal (Ir); and a calculation unit (CULC) which determines positions of two extreme values from the signal output from the detector, calculates a first total sum (A) by multiplying the signal by first reference data (Sa) in a region between the positions of the two extreme values, and adding the multiplication results, calculates a second total sum (B) by multiplying the signal by second reference data (Sb) with a phase difference of 90° with respect to the first reference data in the region, and adding the multiplication results, calculates a phase (PHS) of the signal based on the first and second total sums, and calculates the position of the target object based on the calculated phase.

EP2733469B1


Kommentare zu diesem Patent schicken Sie bitte an .
Datenschutzerklärung