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GB685353A - Improvements in or relating to electro-hydraulic servo mechanism - Google Patents

Improvements in or relating to electro-hydraulic servo mechanism

Info

Publication number
GB685353A
GB685353A GB525451A GB525451A GB685353A GB 685353 A GB685353 A GB 685353A GB 525451 A GB525451 A GB 525451A GB 525451 A GB525451 A GB 525451A GB 685353 A GB685353 A GB 685353A
Authority
GB
United Kingdom
Prior art keywords
valve
passage
outlet
chamber
fluid
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
GB525451A
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.)
Research Corp
Original Assignee
Research Corp
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 Research Corp filed Critical Research Corp
Publication of GB685353A publication Critical patent/GB685353A/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
    • 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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0438—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the pilot valves being of the nozzle-flapper type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86582—Pilot-actuated
    • Y10T137/8659—Variable orifice-type modulator

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)

Abstract

685,353. Fluid-pressure servomotor-control systems ; electrically actuated valves. RESEARCH CORPORATION. March 5, 1951 [April 26, 1950], No. 5254/51. Class 135 [Also in Group XXXV] In a servomotor system of the kind comprising a hydraulically actuated mechanism 14 controlled by a spring-loaded valve 26 which is actuated by the pressure in a chamber 31, which pressure is varied by movement of a member 34 controlling an outlet 36 from the chamber 31 in response to control signals applied to an electrical actuator 35, the actuator consists of a permanent magnet and an electro-magnet, and the force acting on the armature 34 due to the permanent magnet is balanced by a spring 51. Member 34 is a spring arm fixed at its upper end. The actuator may consist of a motor with a rotary armature. The electro-magnet shown may have simple or push-pull coils. A hydraulic pressure fluid is applied at 19 to the right-hand (smaller) face of piston 14, and it flows along passage 28 to the valve 26 and also past a restriction 40 to the chamber 31 and to outlet 36. Oscillation of valve 26 is prevented by providing a damping restriction 37 between chamber 31 and the outlet 36. In the neutral position of valve 26, to which it is urged by a leaf spring 23, there is negative lap between the controlling edges of the valve and the chamfered edges of the co-operating groove 25 so that there is a small flow of fluid from passage 28 through passage 29 to the left-hand side of piston 14 and also to an exhaust passage 30. Fluid which escapes from the outlet 36 flows to exhaust through a passage 43.
GB525451A 1950-04-26 1951-03-05 Improvements in or relating to electro-hydraulic servo mechanism Expired GB685353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15826850 US2625136A (en) 1950-04-26 1950-04-26 Electrohydraulic servo mechanism

Publications (1)

Publication Number Publication Date
GB685353A true GB685353A (en) 1952-12-31

Family

ID=22567351

Family Applications (1)

Application Number Title Priority Date Filing Date
GB525451A Expired GB685353A (en) 1950-04-26 1951-03-05 Improvements in or relating to electro-hydraulic servo mechanism

Country Status (2)

Country Link
US (1) US2625136A (en)
GB (1) GB685353A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137319A (en) * 1983-03-28 1984-10-03 Barber Colman Co An electro-pneumatic transducer

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US2820435A (en) * 1950-11-18 1958-01-21 United Aircraft Corp Pressure responsive control device
US2775254A (en) * 1951-09-05 1956-12-25 British Messier Ltd Electromagnetic devices for controlling fluid pressure
US2849889A (en) * 1952-01-25 1958-09-02 Chrysler Corp Transmission and controls therefor
US2866476A (en) * 1952-04-03 1958-12-30 British Messier Ltd Electro-magnetically operated control valves
US2832318A (en) * 1952-04-30 1958-04-29 Ex Cell O Corp Servo control unit
US2767689A (en) * 1953-05-22 1956-10-23 Cornell Aeronautical Labor Inc Electrohydraulic servo valve
US2914076A (en) * 1953-05-29 1959-11-24 Honeywell Regulator Co Flapper-nozzle couple with perforated flapper
US2934765A (en) * 1953-09-21 1960-04-26 Ex Cell O Corp Flow control servo valve
US2897792A (en) * 1954-03-05 1959-08-04 Hydraulic Res & Mfg Co Servo valves
US2844157A (en) * 1954-06-04 1958-07-22 Canadian Chemical Company Ltd Electropneumatic transducer
US2823689A (en) * 1954-06-18 1958-02-18 Donald V Healy Electro-hydraulic servo valve
US2872934A (en) * 1955-02-21 1959-02-10 Warner Swasey Co Control system for fluid operated power device
US2802456A (en) * 1955-02-21 1957-08-13 Warner & Wasey Company Pilot valve
US3209782A (en) * 1955-05-25 1965-10-05 Bell Acrospace Corp Flapper valves
US2889109A (en) * 1955-06-16 1959-06-02 Harris Intertype Corp Pneumatic digital to analog summing device
US2954794A (en) * 1955-11-01 1960-10-04 William A Paine Electro-hydraulic servo and inverter system
US2879781A (en) * 1955-11-18 1959-03-31 Honeywell Regulator Co Control apparatus
GB796194A (en) * 1956-01-05 1958-06-04 Dewandre Co Ltd C Improvements in or relating to power-assisted steering mechanisms for road vehicles
US2827067A (en) * 1956-03-08 1958-03-18 Bendix Aviat Corp Damped electrohydraulic servo valve
US2989987A (en) * 1956-05-07 1961-06-27 Sanders Associates Inc 2-stage hydraulic servo valve
US2959191A (en) * 1956-07-30 1960-11-08 Warner Swasey Co Machine tool with contour following apparatus
US2993510A (en) * 1956-11-28 1961-07-25 Int Basic Economy Corp Fluid control valve
US2926696A (en) * 1957-05-09 1960-03-01 Honeywell Regulator Co Hydraulic control apparatus
US2997986A (en) * 1958-11-12 1961-08-29 Holley Carburetor Co Servo system
US3107638A (en) * 1960-05-31 1963-10-22 John Blue Company Inc Manually operable implement for injecting anhydrous ammonia and other liquid fertilizrs into the soil
US3083696A (en) * 1961-05-24 1963-04-02 Conoflow Corp Positioner
US3143925A (en) * 1961-10-11 1964-08-11 Bell Aerospace Corp Servo mechanism
US3247912A (en) * 1963-03-19 1966-04-26 Dyna Systems Inc Electro-hydraulic control for machine tools
US3171329A (en) * 1963-05-06 1965-03-02 Honeywell Regulator Co Control apparatus
US3339573A (en) * 1965-03-15 1967-09-05 Weatherhead Co Flow control valve
GB1100149A (en) * 1965-05-05 1968-01-24 Moog Inc Moving coil electrohydraulic servovalve
US3386339A (en) * 1965-06-07 1968-06-04 Gen Dynamics Corp Hydraulic amplifier
DE1500185B1 (en) * 1965-07-02 1969-12-18 Philco Ford Corp Electromagnetically operated valve
US3349801A (en) * 1965-09-13 1967-10-31 John F Grundmann Valve arrangement
GB1170281A (en) * 1966-02-16 1969-11-12 Dowty Technical Dev Ltd Electro-Hydraulic Servo Valves.
US3411531A (en) * 1966-04-26 1968-11-19 Racine Hydraulics & Machinery Remotely controllable valves
GB1181243A (en) * 1966-05-31 1970-02-11 Norcon Norris Ltd Improvements in or relating to Fluid Control Switching Arrangements
US3373769A (en) * 1966-11-02 1968-03-19 Moog Inc Valve for controlling simultaneously the flow of two separate fluids
US3401601A (en) * 1967-01-23 1968-09-17 Johnson Service Co Hydraulic servo valve
US3433266A (en) * 1967-03-22 1969-03-18 Moog Inc Positive centering servovalve having movable spring backup
US3430656A (en) * 1967-04-07 1969-03-04 Moog Inc Positive centering servovalve having movable nozzle block
US3518918A (en) * 1967-04-11 1970-07-07 Singer Co Pressure differential control system for actuation of a movable member
DE1650559B1 (en) * 1967-09-08 1970-02-26 Schneider Co Optische Werke Control device for pressure medium-controlled valve systems
US3498329A (en) * 1967-10-12 1970-03-03 Delta Hydraulics Co Servo valve
US3516441A (en) * 1967-10-12 1970-06-23 Delta Hydraulies Co Suspension assembly for bobbin in servo-valve
US3410308A (en) * 1967-12-05 1968-11-12 Moog Inc Moving coil electrohydraulic servovalve
GB1229731A (en) * 1968-01-15 1971-04-28
US3596677A (en) * 1969-01-13 1971-08-03 Rex Chainbelt Inc Remotely operable pressure compensated flow control valve
GB1289995A (en) * 1969-08-26 1972-09-20
US3583443A (en) * 1969-09-18 1971-06-08 Ite Imperial Corp Valve with highly sensitive actuating means
US4256017A (en) * 1979-04-05 1981-03-17 The Bendix Corporation Differential area electrohydraulic doser actuator
IT1144393B (en) * 1981-07-17 1986-10-29 Fiat Auto Spa FLOW REGULATING VALVE FOR HYDRAULIC CIRCUITS
DE3306588C2 (en) * 1983-02-25 1987-04-02 H. Kuhnke Gmbh Kg, 2427 Malente Electrically-fluidically operated device, in particular valve
US5217047A (en) * 1991-05-30 1993-06-08 Coltec Industries Inc. Solenoid operated pressure regulating valve
US6126138A (en) * 1998-12-30 2000-10-03 Hamilton Sundstrand Corporation Pressure reducing valve and continuously variable transmission with control arrangement using same
EP3715683B1 (en) * 2019-03-29 2022-05-04 Hamilton Sundstrand Corporation Spool servo valve
US11821535B2 (en) * 2020-12-18 2023-11-21 The Boeing Company Shape memory alloy control elements for hydraulic valves
PL444112A1 (en) * 2023-03-17 2024-09-23 Scylla Hydraulics Spółka Z Ograniczoną Odpowiedzialnością Servo-proportional electro-hydraulic valve with direct axial-cam drive

Family Cites Families (7)

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GB174396A (en) * 1920-09-15 1922-01-16 Ole Magne Improvements in speed governing transmission gear for water turbines and the like
CH98885A (en) * 1921-09-28 1923-05-01 Volet Edouard Driving machine double action adjuster.
CH112466A (en) * 1924-02-20 1925-11-02 Neufeldt & Kuhnke Controller with pilot operated hydraulic servo motor.
US1754410A (en) * 1928-04-23 1930-04-15 Robert Lee Gray Variable-compression internal-combustion engine
CH217121A (en) * 1939-11-08 1941-09-30 Hakenfeld Luftfahrtgeraetewerk Pressure medium-operated control device with pre-control and main control element, in particular for motorized rudder adjustment devices in aircraft.
US2261827A (en) * 1940-07-24 1941-11-04 Taylor Instrument Co Valve
US2520115A (en) * 1946-03-30 1950-08-29 Jack & Heintz Prec Ind Inc Servomotor for aircraft controls

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137319A (en) * 1983-03-28 1984-10-03 Barber Colman Co An electro-pneumatic transducer

Also Published As

Publication number Publication date
US2625136A (en) 1953-01-13

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