Start-up conditioning means for an azimuth reference

Details Start-up conditioning means for an azimuth reference Start-up conditioning means for an azimuth reference

1974-08-19

1976-07-06

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Gyroscopically controlled or stabilized

33317R, 74 54, G01C 1902

Patent

active

039673847

ABSTRACT:
In an azimuth reference system including a flux valve coupled to a synchro stator and a directional gyro having its outer gimbal mechanically coupled to the synchro rotor, a low power electronic slaving circuit having its input electrically coupled to the rotor of the synchro and its output coupled to a torquer for slaving the directional gyro into synchronism with the flux valve. The low power electronic circuit includes a phase compensated amplifier coupled between the synchro rotor and a demodulator for producing a bipolar slaving error signal which is coupled through a high gain amplifier to parallel connected coils in the torquer. A threshold detector circuit responsive to the speed of the gyro rotor controls a limiter feedback circuit in the high gain amplifier thereby limiting its gain when the gyro rotor has attained a predetermined speed. A null sensor circuit coupled between the output of the high gain amplifier and the threshold detector circuit senses the output magnitude of the amplifier voltage and inhibits the threshold detector circuit until the magnitude of the output voltage from the high gain amplifier is below a prescribed value thereby indicating the gyro is substantially synchronized with the flux valve.

REFERENCES:
patent: 2998727 (1961-09-01), Baker
patent: 3266325 (1966-08-01), Schaffer
patent: 3276273 (1966-10-01), Baker
patent: 3324731 (1967-06-01), Burmeister et al.

Affiliated with

Also associated with

Rating

Start-up conditioning means for an azimuth reference does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Start-up conditioning means for an azimuth reference, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Start-up conditioning means for an azimuth reference will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1526557