GB1386652A - Hydraulic servodrives - Google Patents

Hydraulic servodrives

Info

Publication number
GB1386652A
GB1386652A GB719272A GB719272A GB1386652A GB 1386652 A GB1386652 A GB 1386652A GB 719272 A GB719272 A GB 719272A GB 719272 A GB719272 A GB 719272A GB 1386652 A GB1386652 A GB 1386652A
Authority
GB
United Kingdom
Prior art keywords
valve
servomotor
valves
feb
lever
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
GB719272A
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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
Priority claimed from DE19712108545 external-priority patent/DE2108545C/en
Application filed by Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of GB1386652A publication Critical patent/GB1386652A/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
    • F15B18/00—Parallel arrangements of independent servomotor systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C13/00—Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
    • B64C13/24—Transmitting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)

Abstract

1386652 Fluid-pressure servo-control MESSERSCHMITT BOLKOW BLOHM GmbH 16 Feb 1972 [23 Feb 1971] 7192/72 Heading G3P An aircraft elevator 1 is positioned by servomotors 2, 3 controlled by valves 10, 11 connected to respective fluid sources 8, 9 by valves 35, 31 connected to a differential piston 37 responsive via 51, 52 to the source pressures so as normally to adopt the position shown in which valve 31 is closed and valve 35 is open, resulting in control by servomotor 2 with servomotor 3 acting as a standby. The valves 10, 11 are each connected to a floating lever 12 or 13 by a pin 22 Fig. 2, extending from the valve rod into sliders 24 carried by arms 20 pivoted to the floating lever at 15. If valve 10 should seize, springs 23 allow continued relative movement of lever 12 and solenoid valve 32 is automatically closed via 33 causing piston 37 to shift rightwards to open valve 31 and close valve 35, thereby engaging servomotor 3. This changeover also occurs if source 8 fails. The system might alternatively include three channels, e.g. when used for controlling helicopter rotor blades. Each valve 10, 11 may act to interconnect both sides of its respective servomotor upon failure of supply pressure.
GB719272A 1971-02-23 1972-02-16 Hydraulic servodrives Expired GB1386652A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712108545 DE2108545C (en) 1971-02-23 Double hydraulic actuator

Publications (1)

Publication Number Publication Date
GB1386652A true GB1386652A (en) 1975-03-12

Family

ID=5799576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB719272A Expired GB1386652A (en) 1971-02-23 1972-02-16 Hydraulic servodrives

Country Status (5)

Country Link
US (1) US3878764A (en)
JP (1) JPS5654280B1 (en)
FR (1) FR2126223B1 (en)
GB (1) GB1386652A (en)
IT (1) IT947773B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108343647A (en) * 2018-01-30 2018-07-31 太原理工大学 A kind of anti-bias load hydraulic rolling cut type metal sheet shearing machine hydraulic system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112824A (en) * 1974-10-23 1978-09-12 Messerschmitt-Bolkow-Blohm Gesellschaft Mit Beschrankter Haftung Double-hydraulic actuator
US4698973A (en) * 1983-08-04 1987-10-13 Johnston Barry W Closed loop solar collector system powering a self-starting uniflow engine
US5701801A (en) * 1995-10-18 1997-12-30 Mcdonnell Douglas Corporation Mechanically redundant actuator assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597419A (en) * 1949-06-02 1952-05-20 Hobson Ltd H M Hydraulic servomotor and the like
US2947285A (en) * 1957-03-20 1960-08-02 Bell Aerospace Corp Manual and automatic hydraulic servomechanism
US3272062A (en) * 1965-10-07 1966-09-13 Ltv Electrosystems Inc Servo valve synchronizer
US3338139A (en) * 1965-12-23 1967-08-29 Bell Aerospace Corp Redundant control system
US3426650A (en) * 1965-12-23 1969-02-11 Bell Aerospace Corp Triple channel redundant hydraeric control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108343647A (en) * 2018-01-30 2018-07-31 太原理工大学 A kind of anti-bias load hydraulic rolling cut type metal sheet shearing machine hydraulic system
CN108343647B (en) * 2018-01-30 2019-07-26 太原理工大学 A kind of anti-bias load hydraulic rolling cut type metal sheet shearing machine hydraulic system

Also Published As

Publication number Publication date
US3878764A (en) 1975-04-22
FR2126223B1 (en) 1975-02-14
IT947773B (en) 1973-05-30
JPS5654280B1 (en) 1981-12-24
DE2108545A1 (en) 1972-09-07
FR2126223A1 (en) 1972-10-06
DE2108545B2 (en) 1973-01-11

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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