Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Patent
1977-10-04
1981-04-21
Truhe, J. V.
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
318663, 318672, 318673, 318447, 343100AD, G05B 106
Patent
active
042635390
ABSTRACT:
Apparatus for rotating an antenna to a predetermined position and maintaining said position is disclosed. The system comprises an antenna position sensing signal source, a desired position signal source, both of which provide analog signals, position comparator means, and antenna drive means. Comparison of the desired position signal and actual position signal generates a direction relay signal and an antenna rotor drive relay signal which together activate the antenna rotor drive means for rotation in the proper direction to the desired position. Circuitry is included for automatic operation in conjunction with equipment utilizing predetermined channels, such as a radio or television receiver, and for manual override or testing and calibration of the automatic operation.
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"Owner's Manual Cornell-Dubilier Electronics Model AR-40 Solid State Automatic Antenna Rotor System", #508 52-00, Issue E 7/74.
Indyk Eugene E.
Truhe J. V.
Zenith Radio Corporation
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