METHOD FOR DETECTING ERRORS IN A ROTATING POSITION SENSOR SYSTEM HAVING SINE AND COSINE SIGNALS

METHOD FOR DETECTING ERRORS IN A ROTATING POSITION SENSOR SYSTEM HAVING SINE AND COSINE SIGNALS

In some embodiments, a method of correcting for errors in a rotational position sensor having a sine signal and a cosine signal is presented. The method includes compiling data from the sine signal and the cosine signal over a period of rotation of a motor shaft; determining offset correction parame...

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Bibliographische Detailangaben
Hauptverfasser: JANISCH, Josef, MÜSCH, Erhard
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS
MEASURING
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
PHYSICS
TARIFF METERING APPARATUS
TESTING
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Beschreibung
Zusammenfassung:In some embodiments, a method of correcting for errors in a rotational position sensor having a sine signal and a cosine signal is presented. The method includes compiling data from the sine signal and the cosine signal over a period of rotation of a motor shaft; determining offset correction parameters from the data; correcting the data with the offset correction parameters; determining amplitude difference parameters from the data; correcting the data with the amplitude difference parameters; determining phase difference parameters from the data; correcting the data with the phase difference parameters; and using the offset correction parameters, the amplitude difference parameters, and the phase difference parameters to correct the sine signal and the cosine signal.