GB805537A - Improvements in electro-hydraulic servo mechanisms - Google Patents

Improvements in electro-hydraulic servo mechanisms

Info

Publication number
GB805537A
GB805537A GB2028055A GB2028055A GB805537A GB 805537 A GB805537 A GB 805537A GB 2028055 A GB2028055 A GB 2028055A GB 2028055 A GB2028055 A GB 2028055A GB 805537 A GB805537 A GB 805537A
Authority
GB
United Kingdom
Prior art keywords
control valve
actuator
diaphragm
housing
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2028055A
Inventor
Ian Kennan Bertram Lasbrey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Short Brothers PLC
Original Assignee
Short Brothers and Harland Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Short Brothers and Harland Ltd filed Critical Short Brothers and Harland Ltd
Priority to GB2028055A priority Critical patent/GB805537A/en
Publication of GB805537A publication Critical patent/GB805537A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/16—Systems essentially having two or more interacting servomotors, e.g. multi-stage
    • F15B9/17—Systems essentially having two or more interacting servomotors, e.g. multi-stage with electrical control means

Abstract

805,537. Fluid-pressure servomotor control systems; valves. SHORT BROS. & HARLAND Ltd. Oct. 9, 1956 [July 13, 1955], No. 20280/55. Class 135. In a servo mechanism comprising an hydraulic actuator and a piston-type control valve controlled by electrical signals through the agency of a transducer to displace the control valve to actuate the output member of the actuator in correspondence with the electrical signals, the transducer comprises a housing 19, Fig. 2, mounting between its two halves in resilient gaskets, a diaphragm 18 of magnetic material coacting on its opposite faces with polepieces 20, each of which carries a driving coil 21 energized by an amplifier to which electric signals are fed. Each polepiece is formed with a projecting nozzle 23 connected by a duct 24 to ducts 25, 26, Fig. 3, connected respectively through restrictions 25A, 27 to a pressure liquid supply inlet 13 and one end of the plunger 11 of the control valve. The control valve includes a port 32 connected to the supply inlet 13, ports 33 connected to opposite ends of the actuator and ports 29 leading to the interior of the housing 19 on opposite sides of the diaphragm 18, so that on movement of the control valve to admit pressure liquid to one end of the actuator 10 and expel it from its other end the expelled liquid acts on the diaphragm in opposition to the applied electrical force to produce hydraulic feed-back before being finally exhausted through one or other of restricted outlets 30. A member 17 connected to the output member of the actuator is associated with a potentiometer 16 which feeds back into the amplifier electrical signals of an opposite sense to those originally received to produce electrical feed-back. For operating a single-acting actuator one of the polepieces and associated nozzle may be dispensed with and replaced by a dummy housing and the control valve biased, e.g. by a spring against hydraulic pressure exerted on it from the duct leading to the nozzle of the remaining polepiece.
GB2028055A 1955-07-13 1955-07-13 Improvements in electro-hydraulic servo mechanisms Expired GB805537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2028055A GB805537A (en) 1955-07-13 1955-07-13 Improvements in electro-hydraulic servo mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2028055A GB805537A (en) 1955-07-13 1955-07-13 Improvements in electro-hydraulic servo mechanisms

Publications (1)

Publication Number Publication Date
GB805537A true GB805537A (en) 1958-12-10

Family

ID=10143374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2028055A Expired GB805537A (en) 1955-07-13 1955-07-13 Improvements in electro-hydraulic servo mechanisms

Country Status (1)

Country Link
GB (1) GB805537A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1138596B (en) * 1959-09-03 1962-10-25 Bell Aerospace Corp Control valve
DE1159232B (en) * 1959-03-16 1963-12-12 Ct De Rech S Hydrauliques Et E Control with piston valve and nozzle-like outlet openings
DE1222338B (en) * 1959-10-31 1966-08-04 Weston Hydraulics Ltd Control device for a double-acting consumer
DE1600741B1 (en) * 1966-02-16 1972-05-31 Dowty Technical Dev Ltd ELECTROHYDRAULIC CONTROL VALVE
US4282946A (en) * 1979-06-26 1981-08-11 Macguire John C Multi-terrain vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159232B (en) * 1959-03-16 1963-12-12 Ct De Rech S Hydrauliques Et E Control with piston valve and nozzle-like outlet openings
DE1138596B (en) * 1959-09-03 1962-10-25 Bell Aerospace Corp Control valve
DE1222338B (en) * 1959-10-31 1966-08-04 Weston Hydraulics Ltd Control device for a double-acting consumer
DE1600741B1 (en) * 1966-02-16 1972-05-31 Dowty Technical Dev Ltd ELECTROHYDRAULIC CONTROL VALVE
US4282946A (en) * 1979-06-26 1981-08-11 Macguire John C Multi-terrain vehicle

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