Synchro-to-digital converter

Details Synchro-to-digital converter Synchro-to-digital converter

1975-04-17

1977-04-12

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

G08C 900

Patent

active

040178463

ABSTRACT:
A synchro-to-digital converter converts polyphase a.c. signals, delivered from a synchro, a resolver, or the like (hereinafter called simply a synchro) in correspondence to a rotational angle of the rotor thereof, into digital values. Two phase signals, adjacent to each other in the polyphase synchro signals, are selected in a predetermined mode by the use of higher bit signals obtained from an operational device, and are thereafter introduced into a D-A (digital-analog) converter driven by lower bit signals obtained from the operational device. The output signal from the D-A converter is compared with a reference signal so that the polarity thereof is discriminated. The operational device is continuously driven by the polarity-discriminated until the output signal from the D-A converter becomes zero. Thereby absolute digital values corresponding to the rotational angle of the rotor can be delivered at a high speed.

REFERENCES:
patent: 3668693 (1972-06-01), Eaton
patent: 3688303 (1972-08-01), Metz
patent: 3713141 (1973-01-01), Higgins
patent: 3827045 (1974-07-01), Markus

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