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EP0097007A3 - A hydraulic control system - Google Patents

A hydraulic control system Download PDF

Info

Publication number
EP0097007A3
EP0097007A3 EP83303198A EP83303198A EP0097007A3 EP 0097007 A3 EP0097007 A3 EP 0097007A3 EP 83303198 A EP83303198 A EP 83303198A EP 83303198 A EP83303198 A EP 83303198A EP 0097007 A3 EP0097007 A3 EP 0097007A3
Authority
EP
European Patent Office
Prior art keywords
load
flow rate
hydraulic control
control system
independent
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.)
Ceased
Application number
EP83303198A
Other languages
German (de)
French (fr)
Other versions
EP0097007A2 (en
Inventor
William Richards Price
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0097007A2 publication Critical patent/EP0097007A2/en
Publication of EP0097007A3 publication Critical patent/EP0097007A3/en
Ceased 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram
    • 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
    • F15B9/08—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 valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/09—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 valves affecting the fluid feed or the fluid outlet of the servomotor with electrical control means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Servomotors (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

A hydraulic control system for regulation of fluid flow rate, in which the fluid flow rate to and from a load actuator (28) is modulated by electric current in a single electromagnetic device (25) such that the flow rate is independent of load magnitude when the system is used without load velocity feedback and such that the flow rate is independent of both load magnitude and fluid viscosity when the system is used with load velocity feedback.
EP83303198A 1982-06-15 1983-06-02 A hydraulic control system Ceased EP0097007A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8217309 1982-06-15
GB8217309 1982-06-15

Publications (2)

Publication Number Publication Date
EP0097007A2 EP0097007A2 (en) 1983-12-28
EP0097007A3 true EP0097007A3 (en) 1984-08-01

Family

ID=10531047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83303198A Ceased EP0097007A3 (en) 1982-06-15 1983-06-02 A hydraulic control system

Country Status (2)

Country Link
EP (1) EP0097007A3 (en)
GB (1) GB2121990B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113446278B (en) * 2021-06-28 2022-07-22 温岭市富力泵业有限公司 Hydraulic reversing valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH444601A (en) * 1966-12-13 1967-09-30 Beringer Hydraulik Gmbh Control device for hydraulically operated equipment
US3410308A (en) * 1967-12-05 1968-11-12 Moog Inc Moving coil electrohydraulic servovalve
DE2658928A1 (en) * 1976-12-24 1978-07-06 Beringer Hydraulik Gmbh HYDRAULIC CONTROL
DE3009960A1 (en) * 1979-03-22 1980-10-02 Trw Inc CONTROL FOR THE FLOW OF A FLOWABLE MEDIUM
DE3042015A1 (en) * 1980-11-07 1982-05-19 Reinhard Ing.(grad.) 4050 Mönchengladbach Kucharzyk Electrohydraulic servo-valve unit with hydraulic control - has control slider whose control and measuring stroke is converted into force by mechanical, series, regulating members

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3031846A (en) * 1961-04-05 1962-05-01 David E Wiegand Hydraulic servo
FR1605286A (en) * 1964-04-16 1974-04-05
US3455210A (en) * 1966-10-26 1969-07-15 Eaton Yale & Towne Adjustable,metered,directional flow control arrangement
GB1200911A (en) * 1967-02-23 1970-08-05 Churchill Charles Ltd Improvements in hydraulic flow controllers
US3742981A (en) * 1972-02-24 1973-07-03 Sanders Associates Inc Flow control valve with single spool second stage
DE2234131C3 (en) * 1972-07-12 1975-04-03 Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen Stabilization device for damping high-frequency vibrations on a hydraulic servo control
GB1465674A (en) * 1973-02-26 1977-02-23 Sperry Rand Ltd Electrically-operated fluid actuator
DE2962702D1 (en) * 1978-08-25 1982-06-24 Dewandre Co Ltd C Improvements relating to hydraulic control systems
US4222409A (en) * 1978-10-06 1980-09-16 Tadeusz Budzich Load responsive fluid control valve
IT1129054B (en) * 1980-01-08 1986-06-04 Fiat Ricerche FLOW RATE REGULATOR FOR HYDRAULIC CIRCUITS

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH444601A (en) * 1966-12-13 1967-09-30 Beringer Hydraulik Gmbh Control device for hydraulically operated equipment
US3410308A (en) * 1967-12-05 1968-11-12 Moog Inc Moving coil electrohydraulic servovalve
DE2658928A1 (en) * 1976-12-24 1978-07-06 Beringer Hydraulik Gmbh HYDRAULIC CONTROL
DE3009960A1 (en) * 1979-03-22 1980-10-02 Trw Inc CONTROL FOR THE FLOW OF A FLOWABLE MEDIUM
DE3042015A1 (en) * 1980-11-07 1982-05-19 Reinhard Ing.(grad.) 4050 Mönchengladbach Kucharzyk Electrohydraulic servo-valve unit with hydraulic control - has control slider whose control and measuring stroke is converted into force by mechanical, series, regulating members

Also Published As

Publication number Publication date
GB2121990A (en) 1984-01-04
EP0097007A2 (en) 1983-12-28
GB8315137D0 (en) 1983-07-06
GB2121990B (en) 1985-11-13

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR IT NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: F15B 13/043

AK Designated contracting states

Designated state(s): BE DE FR IT NL

17P Request for examination filed

Effective date: 19840626

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19870605