Drift-compensated free-rotor gyro

Details Drift-compensated free-rotor gyro Drift-compensated free-rotor gyro

1975-10-31

1977-01-04

Scott, Samuel

Machine element or mechanism

Gyroscopes

Gyroscope control

74 56B, 74 57, G01C 1930

Patent

active

040006603

ABSTRACT:
A fluidic/pneumatic, two-axis, free-rotor gyro in which the free-inertia or is gas bearing supported on a spherical portion of a rotatable gas bearing rotor, both rotors being connectable to controllable sources of drive fluid pressure for separate drive and pneumatic pickoff and torquer units, the pickoff units providing control signals representative of the frequency of each rotor. The invention includes a further aspect of comparator control circuits responsive to said control signals for selecting and maintaining the speed of each of the two rotors independently and in a ratio selected to provide G.sup.2 drift compensation. A further aspect of the invention comprises the compensation of case-erection drift by auto-erection drift by specific scaling of the gas-bearing and windage air gap parameters.

REFERENCES:
patent: 3115784 (1963-12-01), Parker
patent: 3257854 (1966-06-01), Schneider et al.
patent: 3358514 (1967-12-01), Hauf et al.
patent: 3446082 (1969-05-01), Speen et al.
patent: 3522737 (1970-08-01), Brenot
patent: 3604277 (1971-09-01), Stripling et al.
patent: 3727466 (1973-04-01), Kraus et al.
patent: 3747417 (1973-07-01), Beardmore
patent: 3765250 (1973-10-01), Graefe

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