Motors: expansible chamber type – Working member position feedback to motive fluid control – Electrical input and feedback signal means
Patent
1984-12-11
1989-01-31
Walsh, Donald P.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Electrical input and feedback signal means
91384, 244227, 416114, F15B 1316
Patent
active
048007986
ABSTRACT:
A dual redundant servomechanism for moving aircraft control surfaces is disclosed. The servomechanism is of the type whose input commands, from the pilot of the aircraft, are transmitted electrically. Force fight, which is associated with such dual servomechanisms when they are connected to a common aircraft control surface, is minimized. This is accomplished by providing the control system for each servomechanism with input signals which are electrically summed. Each control system includes electrical transducers which provide a signal indicative of actuator position and the pressure associated with the hydraulic motor used in each servomechanism.
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patent: 3368351 (1968-02-01), Wood et al.
patent: 3482486 (1969-12-01), Nordholm, Jr.
patent: 3640183 (1972-02-01), Kock et al.
patent: 3968730 (1976-07-01), Lionet
patent: 4274808 (1981-06-01), Garner
patent: 4336745 (1982-06-01), Lund
patent: 4531448 (1985-07-01), Barnes
Boldrin Clete M.
McCorkle Richard D.
Rice Jimmy W.
Rustik James J.
Scearce Bobby D.
Singer Donald J.
The United States of America as represented by the Secretary of
Walsh Donald P.
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