Dual phase resolver to digital converter

Details Dual phase resolver to digital converter Dual phase resolver to digital converter

1992-09-30

1994-09-13

Logan, Sharon D.

Coded data generation or conversion

Phase or time of phase change

Synchro or resolver signal

341112, 341115, H03M 164

Patent

active

053472772

ABSTRACT:
A dual phase resolver to digital converter having two separate channels for generating rotor position data. The first channel generates an indication of rotor position based on a sinewave type reference signal applied to a first stator winding and the rotor signal while the second channel provides an indication of rotor position based on a cosinewave type reference signal applied to the second stator winding and the rotor signal. Logic circuitry associated with the data channels provide separate fault data indicative of when position data may be subject to error. The data from the two channels are selectively combined in the output of the converter. Data from one channel is used when the other channel is subject to fault. An average of the data is used when both channels are operating properly in order to provide greater accuracy.

REFERENCES:
patent: 3918044 (1975-11-01), Alpatoff et al.
patent: 4204257 (1980-05-01), Hungerford
patent: 4472669 (1984-09-01), Denham et al.
patent: 4831510 (1989-05-01), Dummermuth et al.
patent: 4933674 (1990-06-01), Gasperi et al.

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