Stabilization aid for a vehicle-or vessel-borne search unit

Details Stabilization aid for a vehicle-or vessel-borne search unit Stabilization aid for a vehicle-or vessel-borne search unit

1986-03-21

1987-07-14

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318588, 318611, 318632, 364164, 343766, B64C 1706, H01Q 134

Patent

active

046805214

ABSTRACT:
A stabilization aid for a vehicle- or vessel-borne search unit comprises two servomechanisms for stabilizing the observation part (3) of the search unit about two mutually perpendicular axes (S.sub.1 and S.sub.2) mounted on the part of the search unit which rotates about the search axis (1). The stabilization aid comprises a computer (7) for determining, from the instantaneous angle of inclination (.alpha.) of the platform (2) supporting the search unit with respect to an earth-fixed reference axis and the instantaneous angular position (B) of the search unit about the search axis (1), measured in the plane of the platform (2), input signals for the servomechanisms. A portion of these input signals are compensating signals for the control errors in the servomechanisms. The principal causes of the control errors are the disturbing torques arising through the non-uniformity in the search motion and the rotational velocity of each of the stators with respect to the rotors of the servomechanism motors on their axes.

REFERENCES:
patent: 3358285 (1967-12-01), Van der Wal
patent: 3741474 (1973-06-01), Kawada
patent: 3832609 (1974-08-01), Barrett
patent: 4035698 (1977-07-01), Soderberg
patent: 4136303 (1979-01-01), Almquist
patent: 4143312 (1979-03-01), Duckworth
patent: 4156241 (1979-05-01), Mobley
patent: 4278927 (1981-07-01), Grohe
patent: 4336594 (1982-06-01), Masuzawa
patent: 4382216 (1983-05-01), Joseph
patent: 4418306 (1983-11-01), Samsel

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