Flux valve heading repeater compensation systems

Details Flux valve heading repeater compensation systems Flux valve heading repeater compensation systems

G - Physics

01

C

33/100

G01C 17/28 (2006.01)

Patent

CA 1070107

ABSTRACT OF THE DISCLOSURE A flux valve compass heading repeater system is provided with a compensating system which, when connected to a three-legged flux valve, provides fully compensated, three-wire output signals of the synchro data transmitter type for direct use in apparatus requiring precision three-wire heading data. The compensating system includes control circuits for generat- ing sine and cosine components of magnetic heading and for compensating them for typical compass errors such as those induced by changes in operating latitude and two cycle and index errors. Latitude compensation is accompl- ished by a novel proportional automatic gain control; two cycle cardinal heading error compensation is accomplished by a compensation circuit having only a single manual control, while index error compensation is similarly accomplished by a compensation circuit requiring only a single manual control.

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