Phase analog encoding system with compensation

Details Phase analog encoding system with compensation Phase analog encoding system with compensation

G - Physics

08

C

354/25, 354/75,

G08C 19/16 (2006.01) G05B 1/06 (2006.01) G08C 19/46 (2006.01)

Patent

CA 1217866

PHASE ANALOG ENCODING SYSTEM WITH COMPENSATION ABSTRACT A phase analog encoding system with compensation for the phase shift error inherent in a resolver position transducer. The inherent phase shift error in a resolver position transducer is compensated in a time multiplexed fashion by periodically applying a known reference signal to the resolver and measuring the electrical phase shift across only the resolver. The newly measured value of the inherent electrical phase shift is compared with the last measured value of the inherent electrical phase shift and any deviation is calculated. This deviation is used to determine the appropriate compensation value for the inherent electrical phase shift The compensation value is subtracted from the resolver phase shift during normal operation resulting in an output signal which is independent of the inherent electrical phase shift error in the resolver position transducer.

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