BE826872A - Systeme de commande automatique - Google Patents

Systeme de commande automatique

Info

Publication number
BE826872A
BE826872A BE154494A BE154494A BE826872A BE 826872 A BE826872 A BE 826872A BE 154494 A BE154494 A BE 154494A BE 154494 A BE154494 A BE 154494A BE 826872 A BE826872 A BE 826872A
Authority
BE
Belgium
Prior art keywords
control system
automatic control
automatic
control
Prior art date
Application number
BE154494A
Other languages
English (en)
French (fr)
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 filed Critical
Publication of BE826872A publication Critical patent/BE826872A/xx

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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F15B2211/20538—Type of pump constant 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
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a return line
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • 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
    • F15B2211/65—Methods of control of the load sensing pressure
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
BE154494A 1974-03-20 1975-03-19 Systeme de commande automatique BE826872A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US452713A US3868821A (en) 1974-03-20 1974-03-20 Automatic pump control system

Publications (1)

Publication Number Publication Date
BE826872A true BE826872A (fr) 1975-07-16

Family

ID=23797622

Family Applications (1)

Application Number Title Priority Date Filing Date
BE154494A BE826872A (fr) 1974-03-20 1975-03-19 Systeme de commande automatique

Country Status (7)

Country Link
US (2) US3868821A (US20110158925A1-20110630-C00042.png)
JP (1) JPS50132382A (US20110158925A1-20110630-C00042.png)
AU (1) AU504138B2 (US20110158925A1-20110630-C00042.png)
BE (1) BE826872A (US20110158925A1-20110630-C00042.png)
CA (1) CA1035668A (US20110158925A1-20110630-C00042.png)
DE (1) DE2509858A1 (US20110158925A1-20110630-C00042.png)
GB (1) GB1508842A (US20110158925A1-20110630-C00042.png)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868821A (en) * 1974-03-20 1975-03-04 Tyrone Hydraulics Automatic pump control system
FR2271429B1 (US20110158925A1-20110630-C00042.png) * 1974-05-16 1978-03-31 Poclain Sa
US3982469A (en) * 1976-01-23 1976-09-28 Caterpillar Tractor Co. Apparatus for controlling work element operating pressures in a fluid system
US4093092A (en) * 1976-03-24 1978-06-06 Caterpillar Tractor Co. Load limiting device
JPS57197336A (en) * 1981-05-29 1982-12-03 Komatsu Ltd Oil-pressure circuit for turning excavator
US4545202A (en) * 1983-10-24 1985-10-08 Sundstrand Corporation Pressure-regulating system
JPS60182365A (ja) * 1984-02-28 1985-09-17 Nippon Denso Co Ltd ラジアルプランジヤポンプ
DE3608469A1 (de) * 1986-03-14 1987-10-01 Bosch Gmbh Robert Hydraulikanlage
US5487403A (en) * 1987-01-29 1996-01-30 Mollo; James R. Variable discharge pump with low unload to secondary
US5515879A (en) * 1987-01-29 1996-05-14 Mollo; James R. Load sensed multi-purpose pressure control valve
SE461391B (sv) * 1987-10-28 1990-02-12 Bt Ind Ab Hydraulisk lyftanordning
JPH01150202U (US20110158925A1-20110630-C00042.png) * 1988-04-08 1989-10-17
JP2511629Y2 (ja) * 1988-05-16 1996-09-25 株式会社小松製作所 油圧回路
US4984427A (en) * 1989-09-01 1991-01-15 Kabushiki Kaisha Kobe Seiko Sho Control circuit for hydraulic actuator
US5513732A (en) * 1994-08-05 1996-05-07 Ford Motor Company Regulation of hydraulic pressure in a system having multiple pressure sources
JP4209705B2 (ja) * 2003-03-17 2009-01-14 日立建機株式会社 作業機の油圧回路
US6901754B2 (en) * 2003-10-01 2005-06-07 Husco International, Inc. Power conserving hydraulic pump bypass compensator circuit
CN101858366A (zh) * 2010-05-14 2010-10-13 江门市蒙德电气有限公司 伺服电机驱动的组合式油泵
JP6510396B2 (ja) * 2015-12-28 2019-05-08 日立建機株式会社 作業機械
WO2021114668A1 (zh) * 2019-12-13 2021-06-17 山河智能装备股份有限公司 一种开式液压泵及开式液压系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616264A (en) * 1948-02-06 1952-11-04 Hughes Tool Co Hydraulic by-pass control
US2797551A (en) * 1952-05-17 1957-07-02 American Brake Shoe Co Hydraulic system and pump means therefor
US3355994A (en) * 1966-01-13 1967-12-05 New York Air Brake Co Hydraulic system
US3535877A (en) * 1969-05-09 1970-10-27 Gen Signal Corp Three-pump hydraulic system incorporating an unloader
US3841795A (en) * 1972-07-17 1974-10-15 Caterpillar Tractor Co Combined engine speed and pressure responsive control for variable displacement pumps
US3916767A (en) * 1973-06-14 1975-11-04 Case Co J I Hydraulic control circuit for vehicles
FR2259255B1 (US20110158925A1-20110630-C00042.png) * 1974-01-30 1976-11-26 Poclain Sa
US3868821A (en) * 1974-03-20 1975-03-04 Tyrone Hydraulics Automatic pump control system

Also Published As

Publication number Publication date
CA1035668A (en) 1978-08-01
US4089166A (en) 1978-05-16
AU504138B2 (en) 1979-10-04
JPS50132382A (US20110158925A1-20110630-C00042.png) 1975-10-20
GB1508842A (en) 1978-04-26
US3868821A (en) 1975-03-04
AU7918475A (en) 1976-09-23
DE2509858A1 (de) 1975-09-25

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