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US 4,906,909 AGranted
Analog electronic control differential transmitter
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsJeffrey C. Gremillion, William P. Huntley
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Abstract
A linear, analog, synchro control differential transmitter for implementing he common synchro CDX function whereby a scaled linear analog voltage is used as input instead of a mechanical shaft angular displacement. Alternate synchro functions of CT and CX that the invention implements are also disclosed.
Claims18
A control differential transmitter, comprising;
- input Scott-T transformer means, adapted to receive synchro signal `.phi.`, for producing V.sub.REF SIN.phi. and V.sub.REF COS.phi. signals therefrom;
- analog modulator means, connected to said input transformer means, for receiving said V.sub.REF SIN.phi. and V.sub.REF COS.phi. signals from said input transformer means and a V.sub.IN signal .theta. and producing "infinite" resolution V.sub.REF SIN (.phi.-.theta.) and V.sub.REF COS (.phi.-.theta.) output signals therefrom;
- and
- output Scott-T transformer means, connected to said analog modulator means, for receiving said V.sub.REF SIN (.phi.-.theta.) and V.sub.REF COS (.phi.-.theta.) output signals from said analog modulator means and producing output synchro signal `.phi.-.theta.` therefrom.
1 more element
A control transmitter, comprising;
- input scale isolation transformer means, adapted to receive an excitation voltage V.sub.R1-R2, for producing a V.sub.REF signal therefrom;
- analog modulator means, connected to said input transformer means, for receiving said V.sub.REF signal from said input transformer means and a V.sub.IN signal .theta. and producing "infinite" resolution V.sub.REF SIN .theta. and V.sub.REF COS .theta. output signals therefrom;
- and
- output Scott-T transformer means, connected to said analog modulator means, for receiving said V.sub.REF SIN.theta. and V.sub.REF COS.theta. output signals from said analog modulator means and producing output synchro signal `.theta.` therefrom.
1 more element
A control transformer, comprising;
- input Scott-T transformer means, adapted to receive synchro signal `.phi.`, for producing V.sub.REF SIN.phi. signal `.phi.`, for producing V.sub.REF SIN.phi. and V.sub.REF COS.phi. signals therefrom;
- analog modulator means, connected to said input transformer means, for receiving said V.sub.REF SIN.phi. and V.sub.REF COS.phi. signals from said input transformer means and a V.sub.IN signal .theta. and producing "infinite" resolution V.sub.REF SIN(.phi.-.theta.) output signal therefrom;
- and
- output scale isolation transformer means, connected to said analog modulator means, for receiving said V.sub.REF SIN(.phi.-.theta.) output signal from said analog modulator means and producing a scaled, isolated output resolver signal `.phi.-.theta.` therefrom.
1 more element
Dependencies are inferred from the claim text.