GB1462223A - Servovalve apparatus - Google Patents

Servovalve apparatus

Info

Publication number
GB1462223A
GB1462223A GB1551174A GB1551174A GB1462223A GB 1462223 A GB1462223 A GB 1462223A GB 1551174 A GB1551174 A GB 1551174A GB 1551174 A GB1551174 A GB 1551174A GB 1462223 A GB1462223 A GB 1462223A
Authority
GB
United Kingdom
Prior art keywords
passages
port
fluid
return
hydraulic
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
GB1551174A
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.)
Moog Inc
Original Assignee
Moog Inc
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 Moog Inc filed Critical Moog Inc
Publication of GB1462223A publication Critical patent/GB1462223A/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
    • 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
    • Y10T137/86598—Opposed orifices; interposed modulator
    • 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
    • Y10T137/86614—Electric
    • 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
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • Y10T137/87209—Electric

Abstract

1462223 Servosystems MOOG Inc 8 April 1974 [24 Aug 1973] 15511/74 Heading G3P A multi-two-stage electro-hydraulic servovalve apparatus collectively serviceable by a single fluid supply 39 and a single fluid return 40, comprises at least two servovalves 8, 9 each including a first stage hydraulic amplifier 14, or 18, capable of producing a differential pressure responsive to an electrical command signal, and second stage fluidflow control valve 12 or 16, responsive to the differential pressure, each hydraulic amplifier utilizing input operating fluid, and producing output operating fluid, each flow control valve including an actuating port 65, 67, or 91, 93, communicable with a pressure metering port 58 or 85, and a return metering port 60, 61 or 87, 88 determined by the position of a movable valve spool 12 or 16 arranged to be moved by the differential pressure, the operating fluid for the amplifiers 14, 18 being in series and the ports 65, 67 and 91, 93 of the servovalves being operatively associated with separate load actuators 68, 94. In operation, fluid passes from supply port 39 through passages 42, 43, 48, 50, to nozzles 33, 34, through passages 72, 73, 74, 76, 77, to nozzles 36, 37, thence through passages 101, 102 to fluid return 40. Fluid also flows from port 39 through passages 59, 86, to pressure metering ports 58, 85. Depending upon the position of spool 12, 16, these ports can be connected with one of the passages 64, or 66, 90 or 92, so as to actuate pistons 70, 96, the discharge from the latter passing through the other passages 64, or 66, 90 or 92, and return port 60 or 61, 87 or 88 to fluid return port 40. Electric command signals are applied independently to electromagnetic torque motors 13, 17, and the torque produced acts against a torque from spool feedback wires 57, 100, caused by movement of spools 12, 16, the torque difference being used to displace flappers against nozzles 33, 34, 36, 37, so as to cause an unbalance in flow. The nozzleflapper hydraulic amplifiers can be replaced by jet-type or deflector jet-type hydraulic amplifiers.
GB1551174A 1973-08-24 1974-04-08 Servovalve apparatus Expired GB1462223A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US39126873 US3874405A (en) 1973-08-24 1973-08-24 Multiple tow-stage electrohydraulic servovalve apparatus

Publications (1)

Publication Number Publication Date
GB1462223A true GB1462223A (en) 1977-01-19

Family

ID=23545955

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1551174A Expired GB1462223A (en) 1973-08-24 1974-04-08 Servovalve apparatus

Country Status (4)

Country Link
US (1) US3874405A (en)
JP (1) JPS5045181A (en)
DE (1) DE2431804A1 (en)
GB (1) GB1462223A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108644167A (en) * 2018-05-04 2018-10-12 广州市海同机电设备有限公司 A kind of speed stabilizing mechanism and pressure feedback formula speed stabilizing valve of control valve

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150686A (en) * 1976-11-15 1979-04-24 Textron Inc. Electrohydraulic control module
US4131130A (en) * 1977-07-18 1978-12-26 Sperry Rand Corporation Pneumatic pressure control valve
DE3104957C2 (en) * 1981-02-12 1986-12-04 Herion-Werke Kg, 7012 Fellbach Hydraulically operated press safety valve
US4526201A (en) * 1982-11-04 1985-07-02 Spectra-Physics, Inc. Four-way valve with internal pilot
US4534273A (en) * 1983-02-03 1985-08-13 Pneumo Corporation Control actuation system including staged direct drive valve with fault control
US4646624A (en) * 1984-08-06 1987-03-03 United Technologies Corporation Differential pressure sensor
US4715397A (en) * 1984-08-06 1987-12-29 United Technologies Corporation Pressure regulator
US4938249A (en) * 1986-10-30 1990-07-03 United Technologies Corporation Chip tolerant flapper
JPH0663521B2 (en) * 1988-02-29 1994-08-22 株式会社小松製作所 Control valve device
JP2559612B2 (en) * 1988-02-29 1996-12-04 株式会社小松製作所 Control valve device
US5018431A (en) * 1988-12-09 1991-05-28 Quadrastat Corporation Apparatus for positioning a work implement
US5102161A (en) * 1991-03-07 1992-04-07 Trw Inc. Semi-active suspension system with energy saving valve
GB2346456B (en) * 1999-02-04 2003-05-21 Moog Inc Hydraulic logic cross-coupling between separate redundant servoactutaors
US6640685B2 (en) 2001-02-07 2003-11-04 David M. Hamby Closed loop electrohydraulic actuator control circuit
JP4284687B2 (en) * 2005-04-26 2009-06-24 Ｓｍｃ株式会社 Compound valve for vacuum and vacuum break
US7726340B2 (en) * 2006-11-09 2010-06-01 Honeywell International Inc. Flexible, hermetic pivot seal for torque motor
JP6327418B2 (en) * 2014-09-04 2018-05-23 Smc株式会社 Dual 4-port solenoid valve
EP3473865B1 (en) 2017-10-19 2023-08-30 Hamilton Sundstrand Corporation Nozzle assembly with filter for a servovalve
EP3597937B1 (en) * 2018-07-20 2022-12-28 Hamilton Sundstrand Corporation Servo valve
JP7063436B2 (en) * 2019-09-06 2022-05-09 Smc株式会社 Flow controller and drive unit equipped with it
GB2590654B (en) * 2019-12-23 2022-10-26 Thermal Impact Group Ltd Steam trap

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519900A (en) * 1948-12-10 1950-08-22 Hpm Dev Corp Control circuit for multiple hydraulic press systems
US2832318A (en) * 1952-04-30 1958-04-29 Ex Cell O Corp Servo control unit
US2835265A (en) * 1955-11-16 1958-05-20 Bendix Aviat Corp Transfer valve
US3019735A (en) * 1958-05-09 1962-02-06 Gen Motors Corp Gas driven hydraulic pump
US2942553A (en) * 1958-05-09 1960-06-28 Gen Motors Corp Gas driven hydraulic actuator
US3023782A (en) * 1959-11-13 1962-03-06 Moog Servocontrols Inc Mechanical feedback flow control servo valve
US3070071A (en) * 1960-03-11 1962-12-25 North American Aviation Inc Failure protected signal translating system
US3338138A (en) * 1965-12-01 1967-08-29 Bell Aerospace Corp Redundant control system
US3338139A (en) * 1965-12-23 1967-08-29 Bell Aerospace Corp Redundant control system
US3505929A (en) * 1968-04-16 1970-04-14 Gen Electric Redundant flight control servoactuator
US3470694A (en) * 1968-04-30 1969-10-07 Weatherhead Co Flow proportional valve for load responsive system
US3722543A (en) * 1971-11-02 1973-03-27 Hydraulic Industries Pressure compensated control valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108644167A (en) * 2018-05-04 2018-10-12 广州市海同机电设备有限公司 A kind of speed stabilizing mechanism and pressure feedback formula speed stabilizing valve of control valve

Also Published As

Publication number Publication date
JPS5045181A (en) 1975-04-23
US3874405A (en) 1975-04-01
DE2431804A1 (en) 1975-03-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940407