Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Patent
1975-09-22
1977-10-04
Rubinson, Gene Z.
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
244 79, 74 52, 244165, B64C 1706
Patent
active
040526542
ABSTRACT:
A four-axis gyro stabilized inertial reference system. The system comprises a nested gimbal configuration, which includes a platform and three successively larger and concentrically disposed inner, middle and outer gimbals and an outer casing. The platform and inner, middle and outer gimbals are each configured to permit rotation about an associated axis with that axis being perpendicular to the corresponding axis of the neighboring gimbal or platform. The system further includes a platform stabilizing means for maintaining the platform in a substantially fixed spatial orientation, independent of the spatial orientation of the outer casing and over a predetermined range of angular rates. The stabilizing means includes a detection means for detecting the spatial orientation of the platform, the gimbals and the outer casing, and an angular displacement means responsive to that detection means to appropriately displace one or more of those elements in a manner to maintain the platform in a substantially fixed spatial orientation. The displacement means drives one or more of the platform, inner gimbal and either the middle or outer gimbal about their respective axes, with the selection of the particular one of the middle and outer gimbals to be displaced and the driving signal therefor being dependent upon the current orientation of the inner and middle gimbals in accordance with a predetermined set of criteria.
REFERENCES:
patent: 3188870 (1965-06-01), Lerman
patent: 3269024 (1966-08-01), Fischer et al.
patent: 3616699 (1971-11-01), Brand
patent: 3875488 (1975-04-01), Crocker et al.
Dapprich Douglas J.
Kramer Manuel
Mutter Michael
Rubinson Gene Z.
The Charles Stark Draper Laboratory Inc.
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