EP2246576A4 - CONFLUENCE CONTROL SYSTEM - Google Patents

CONFLUENCE CONTROL SYSTEM

Info

Publication number
EP2246576A4
EP2246576A4 EP08871487.8A EP08871487A EP2246576A4 EP 2246576 A4 EP2246576 A4 EP 2246576A4 EP 08871487 A EP08871487 A EP 08871487A EP 2246576 A4 EP2246576 A4 EP 2246576A4
Authority
EP
European Patent Office
Prior art keywords
motor
vmax1
control system
operation quantity
driver
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
EP08871487.8A
Other languages
German (de)
French (fr)
Other versions
EP2246576A1 (en
EP2246576B1 (en
Inventor
Junichi Miyagi
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Publication of EP2246576A1 publication Critical patent/EP2246576A1/en
Publication of EP2246576A4 publication Critical patent/EP2246576A4/en
Application granted granted Critical
Publication of EP2246576B1 publication Critical patent/EP2246576B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • 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
    • F15B2211/2053—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
    • F15B2211/20—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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/255—Flow control functions
    • 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
    • F15B2211/26—Power control functions
    • 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
    • F15B2211/265—Control of multiple pressure sources
    • F15B2211/2654—Control of multiple pressure sources one or more pressure sources having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

There is provided a confluence control system capable of switching smooth transfer between single drive and confluent drive without any shock. When a flow rate is reduced to a necessary value or less by cut-off characteristics, operation of a second variable flow rate control device 2 is stopped to save energy. An operation quantity distribution unit 51 drives only a first motor 12 by a first velocity signal V1 through a first driver 13, when an operation quantity Vq from a pressure flow rate control unit 40 is at or lower than a maximum velocity Vmax1 of the first motor 12. When the operation quantity Vq exceeds the maximum velocity Vmax1 of the first motor 12, the operation quantity distribution unit 51 drives the first motor 12 at the maximum velocity Vmax1 through the first driver 13, and drives a second motor 22 by a second velocity signal V2 (V2 = Vq - Vmax1) through a second driver 23. As a result, the confluence control system can make smooth transfer from the single drive to the confluent drive without any shock.
EP08871487.8A 2008-01-22 2008-12-18 Confluence control system Not-in-force EP2246576B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008011186A JP4548488B2 (en) 2008-01-22 2008-01-22 Merge control system
PCT/JP2008/073087 WO2009093399A1 (en) 2008-01-22 2008-12-18 Confluent control system

Publications (3)

Publication Number Publication Date
EP2246576A1 EP2246576A1 (en) 2010-11-03
EP2246576A4 true EP2246576A4 (en) 2013-11-20
EP2246576B1 EP2246576B1 (en) 2017-07-19

Family

ID=40900913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08871487.8A Not-in-force EP2246576B1 (en) 2008-01-22 2008-12-18 Confluence control system

Country Status (6)

Country Link
EP (1) EP2246576B1 (en)
JP (1) JP4548488B2 (en)
KR (1) KR101143022B1 (en)
CN (1) CN101910646B (en)
TW (1) TW200934959A (en)
WO (1) WO2009093399A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011112153A (en) * 2009-11-26 2011-06-09 Daikin Industries Ltd Hydraulic device
CN104179736B (en) * 2014-08-15 2016-08-24 徐工集团工程机械股份有限公司科技分公司 A kind of engineering machinery constant displacement pump speed-regulating hydraulic system
CN104564862B (en) * 2015-01-06 2018-08-07 浙江大学 A kind of combined pump control cylinder electrohydraulic control system
CN104806588B (en) * 2015-04-01 2017-08-25 广西柳工机械股份有限公司 Dual-pump flow-converging hydraulic control system
CN108799221A (en) * 2018-07-04 2018-11-13 武汉商学院 Hydraulic injection molding machine dynamical system
CN108757651A (en) * 2018-08-20 2018-11-06 杭叉集团股份有限公司 Electri forklift and its hydraulic control system
IT202300014379A1 (en) * 2023-07-10 2025-01-10 Safim S R L CIRCUIT FOR CONTROLLING THE FLOW RATE IN A HYDRAULIC CIRCUIT

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679690U (en) * 1979-11-22 1981-06-27
JPS59176513U (en) * 1983-05-12 1984-11-26 小島プレス工業株式会社 Energy saving device for injection molding machines
JPS63115902A (en) * 1986-10-30 1988-05-20 Nissei Plastics Ind Co Control device of injection molding machine
JPH05196001A (en) * 1992-01-17 1993-08-06 Tokimec Inc Flow rate and pressure control device for servomotor drive hydraulic pump

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57127870U (en) * 1981-02-05 1982-08-09
JPS60245806A (en) * 1984-05-18 1985-12-05 Nissei Plastics Ind Co Converging circuit
JPS6313903A (en) * 1986-07-04 1988-01-21 Fukushima Seisakusho:Kk Constant level liquid pressure source
JP2859878B2 (en) * 1988-06-17 1999-02-24 ダイキン工業株式会社 Control device for variable displacement pump
JPH0752390Y2 (en) * 1989-11-27 1995-11-29 油研工業株式会社 Hydraulic supply device
JPH0478305A (en) * 1990-07-17 1992-03-12 Sumitomo Heavy Ind Ltd Oil pressure conrol circuit
JPH0478306A (en) 1990-07-17 1992-03-12 Sumitomo Heavy Ind Ltd Oil pressure control circuit
JP2950941B2 (en) * 1990-08-22 1999-09-20 株式会社不二越 Variable displacement pump
JPH05338000A (en) * 1992-06-08 1993-12-21 Toshiba Mach Co Ltd Motor control device for driving pump of injection molding machine
JPH08253955A (en) * 1995-01-20 1996-10-01 Komatsu Ltd Hydraulic circuit for construction machinery
JP2000249103A (en) * 1999-03-02 2000-09-12 Daikin Ind Ltd Hydraulic circuit
JP4137361B2 (en) * 1999-04-05 2008-08-20 東芝機械株式会社 Drive control method and apparatus for hydraulic pump drive motor in injection molding machine
JP3415061B2 (en) * 1999-04-05 2003-06-09 東芝機械株式会社 Drive control method and device for electric motor for driving hydraulic pump in injection molding machine
JP4635282B2 (en) * 1999-09-24 2011-02-23 ダイキン工業株式会社 Autonomous inverter drive hydraulic unit
JP2001193706A (en) * 2000-01-04 2001-07-17 Toshiba Mach Co Ltd Hydraulic circuit for hydraulic driving device
JP2002144100A (en) * 2000-11-15 2002-05-21 Murata Mach Ltd Hydraulic punch press
JP3799366B2 (en) * 2001-08-30 2006-07-19 三菱重工プラスチックテクノロジー株式会社 Injection molding machine and control method thereof
JP3863785B2 (en) * 2002-01-21 2006-12-27 株式会社不二越 Pressure / flow rate control method and apparatus for bi-directional variable discharge pump
JP4167842B2 (en) * 2002-03-27 2008-10-22 株式会社日本製鋼所 Hydraulic control method and control apparatus for injection molding machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5679690U (en) * 1979-11-22 1981-06-27
JPS59176513U (en) * 1983-05-12 1984-11-26 小島プレス工業株式会社 Energy saving device for injection molding machines
JPS63115902A (en) * 1986-10-30 1988-05-20 Nissei Plastics Ind Co Control device of injection molding machine
JPH05196001A (en) * 1992-01-17 1993-08-06 Tokimec Inc Flow rate and pressure control device for servomotor drive hydraulic pump

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009093399A1 *

Also Published As

Publication number Publication date
WO2009093399A1 (en) 2009-07-30
EP2246576A1 (en) 2010-11-03
KR101143022B1 (en) 2012-05-14
KR20100098716A (en) 2010-09-08
CN101910646A (en) 2010-12-08
JP2009174572A (en) 2009-08-06
CN101910646B (en) 2013-07-31
TWI371534B (en) 2012-09-01
EP2246576B1 (en) 2017-07-19
JP4548488B2 (en) 2010-09-22
TW200934959A (en) 2009-08-16

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