Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Patent
1977-01-03
1978-04-11
Dobeck, B.
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
340347SY, G05B 106
Patent
active
040841219
ABSTRACT:
The instant invention relates to a repeater for processing signals from a three wire synchro to control carrier phasing and frequency, while retaining identity of the angular information. The solid state repeater consists of an arrangement in which the synchro signals bearing the angular information are first demodulated. The demodulated signals are thereafter remodulated in a closed loop modulating network.
The phase and frequency of the carrier which is modulated in the closed loop modulating network may be controlled as desired. The modulated carrier is impressed on a negative feedback path in which the signal is demodulated utilizing the selected carrier to produce a variable DC signal which is fed back to the input of the modulating loop so that at null balance the output signal from the modulating path duplicates the angular information from the three wire synchro except that the carrier phase and frequency is controlled as desired. In this fashion, a signal from a three wire synchro may be repeated and the phase and frequency controlled to complement the output equipment without requiring the use of mechanically servoed synchro repeaters.
REFERENCES:
patent: 3244961 (1966-04-01), Adler
patent: 3600694 (1971-08-01), McCollum
patent: 3848172 (1974-11-01), Thomas
patent: 3898546 (1975-08-01), Haskins
Dobeck B.
General Electric Company
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