FR2248429A1 - Hydraulic control system - is for hydraulic pumps with maximum values for pressure and flow - Google Patents

Hydraulic control system - is for hydraulic pumps with maximum values for pressure and flow

Info

Publication number
FR2248429A1
FR2248429A1 FR7435138A FR7435138A FR2248429A1 FR 2248429 A1 FR2248429 A1 FR 2248429A1 FR 7435138 A FR7435138 A FR 7435138A FR 7435138 A FR7435138 A FR 7435138A FR 2248429 A1 FR2248429 A1 FR 2248429A1
Authority
FR
France
Prior art keywords
hydraulic
flow
pressure
control system
servo
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.)
Granted
Application number
FR7435138A
Other languages
French (fr)
Other versions
FR2248429B1 (en
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of FR2248429A1 publication Critical patent/FR2248429A1/en
Application granted granted Critical
Publication of FR2248429B1 publication Critical patent/FR2248429B1/fr
Granted 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
    • F15B9/02—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 with servomotors of the reciprocatable or oscillatable type
    • F15B9/04—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 with servomotors of the reciprocatable or oscillatable type controlled by varying the output of a pump with variable capacity
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The hydraulic control system includes a hydraulic pump, circulating the fluid between a source and a hydraulic jack, with a control piston to vary its flow, and has an electric signal emitter operating in function of required pump flow and actuating an electro-hydraulic servo-valve regulating the hydraulic fluid flow to control piston by positioning it. It also incorporates a device for the retroaction of pump output over the servo-valve and another one, operating by re-positioning the control piston, to make the servo-valve dependable on pressure in one of jack chambers.
FR7435138A 1973-10-19 1974-10-18 Hydraulic control system - is for hydraulic pumps with maximum values for pressure and flow Granted FR2248429A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US40794773A 1973-10-19 1973-10-19

Publications (2)

Publication Number Publication Date
FR2248429A1 true FR2248429A1 (en) 1975-05-16
FR2248429B1 FR2248429B1 (en) 1978-08-11

Family

ID=23614225

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7435138A Granted FR2248429A1 (en) 1973-10-19 1974-10-18 Hydraulic control system - is for hydraulic pumps with maximum values for pressure and flow

Country Status (6)

Country Link
JP (1) JPS5078903A (en)
BE (1) BE821254A (en)
CA (1) CA1013236A (en)
DE (1) DE2449412A1 (en)
FR (1) FR2248429A1 (en)
IT (1) IT1022946B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283343A1 (en) * 1974-08-28 1976-03-26 Sperry Rand Corp ELECTRO-HYDRAULIC SERVO-CONTROL
WO2007097661A1 (en) * 2006-02-21 2007-08-30 Federal State Unitary Enterprise 'central Research Institute Of Automatics And Hydraulics' (Fsue 'tsniiag') Electrohydraulic servo drive and hydraulic amplifier

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494911A (en) * 1983-04-29 1985-01-22 General Signal Corporation Piston pump servo control
US5062265A (en) * 1989-08-01 1991-11-05 Sundstrand Corporation Hydromechanical control of differential pressure across a variable displacement hydraulic motor
US8435010B2 (en) 2010-04-29 2013-05-07 Eaton Corporation Control of a fluid pump assembly
RU2467205C1 (en) * 2011-07-22 2012-11-20 ОТКРЫТОЕ АКЦИОНЕРНОЕ ОБЩЕСТВО "Центральный научно-исследовательский институт автоматики и гидравлики"(ОАО "ЦНИИАГ") Hydraulic drive power source

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2283343A1 (en) * 1974-08-28 1976-03-26 Sperry Rand Corp ELECTRO-HYDRAULIC SERVO-CONTROL
WO2007097661A1 (en) * 2006-02-21 2007-08-30 Federal State Unitary Enterprise 'central Research Institute Of Automatics And Hydraulics' (Fsue 'tsniiag') Electrohydraulic servo drive and hydraulic amplifier

Also Published As

Publication number Publication date
JPS5078903A (en) 1975-06-27
DE2449412A1 (en) 1975-04-30
FR2248429B1 (en) 1978-08-11
IT1022946B (en) 1978-04-20
CA1013236A (en) 1977-07-05
BE821254A (en) 1975-02-17

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Legal Events

Date Code Title Description
ST Notification of lapse