Gyro caging loop system

Details Gyro caging loop system Gyro caging loop system

1977-07-29

1978-11-14

Dobeck, B.

Electricity: motive power systems

Positional servo systems

With stabilizing features

318649, 74 54, G05B 602

Patent

active

041257995

ABSTRACT:
A system for providing a stable caging loop for two-degree-of-freedom dry tuned gyros used in a strap-down inertial navigation system. The system provides satisfactory noise rejection and good navigation accuracy using cross axis torquing only with extremely simple analog shaping circuits in place of the combination of cross axis and direct axis torquing with complex shaping circuitry that is normally required with these gyros in such an application. A 64 Hz bandwidth loop is provided with less than 1.degree. phase lag below 5 Hz, 10 db attenuation of rotor spin rate noise, and at least 35 db attenuation of all higher frequencies. Its performance is such that it can be used in a navigation system requiring accuracy on the order of one nautical mile per hour in a typical missile environment.

REFERENCES:
patent: 3227935 (1966-01-01), Kawada
patent: 3398341 (1968-08-01), Dooley et al.
patent: 3808486 (1974-04-01), Cuda et al.
patent: 3986092 (1976-10-01), Tijsma et al.
patent: 4052654 (1977-10-01), Kramer

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