EP1965083A4 - Hydraulic unit and method of controlling speed of motor in hydraulic unit - Google Patents

Hydraulic unit and method of controlling speed of motor in hydraulic unit

Info

Publication number
EP1965083A4
EP1965083A4 EP07806100A EP07806100A EP1965083A4 EP 1965083 A4 EP1965083 A4 EP 1965083A4 EP 07806100 A EP07806100 A EP 07806100A EP 07806100 A EP07806100 A EP 07806100A EP 1965083 A4 EP1965083 A4 EP 1965083A4
Authority
EP
European Patent Office
Prior art keywords
motor
command value
hydraulic unit
current command
oil pressure
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
EP07806100A
Other languages
German (de)
French (fr)
Other versions
EP1965083A1 (en
EP1965083B1 (en
Inventor
Tetsuo Nakata
Junichi Miyagi
Yasuto Yanagida
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 EP1965083A1 publication Critical patent/EP1965083A1/en
Publication of EP1965083A4 publication Critical patent/EP1965083A4/en
Application granted granted Critical
Publication of EP1965083B1 publication Critical patent/EP1965083B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • 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
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/042—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in"
    • F15B11/0423—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed by means in the feed line, i.e. "meter in" by controlling pump output or bypass, other than to maintain constant speed
    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/12—Parameters of driving or driven means
    • F04B2201/1202—Torque on the axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0201—Current
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2203/00—Motor parameters
    • F04B2203/02—Motor parameters of rotating electric motors
    • F04B2203/0209—Rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • 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
    • F15B2211/20576—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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply 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
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/633—Electronic controllers using input signals representing a state of the prime mover, e.g. torque or rotational speed
    • 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
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6651—Control of the prime mover, e.g. control of the output torque or rotational speed
    • 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
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6656—Closed loop control, i.e. control using feedback

Abstract

In the present invention, an oil pressure unit includes an inverter 14 for supplying electric power to a motor 15; a load sensor 17 for detecting a load of the oil pressure pump 16A; a rotation sensor 19 for detecting a rotation speed of the motor 15; a current command value calculation means 12 for calculating a current command value so that a deviation between a speed command value representing a target rotation speed of the motor 15 and a rotation speed of the motor 15 converges to zero; a correction means 18A for correcting the current command value based on the load of the oil pressure pump 16A; and a control signal generation means for outputting a control signal to the inverter 14 based on a corrected current command value.
EP07806100A 2006-08-30 2007-08-27 Hydraulic unit and method of controlling speed of motor in hydraulic unit Active EP1965083B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006233529A JP4425253B2 (en) 2006-08-30 2006-08-30 Hydraulic unit and motor speed control method in hydraulic unit
PCT/JP2007/066559 WO2008026544A1 (en) 2006-08-30 2007-08-27 Hydraulic unit and method of controlling speed of motor in hydraulic unit

Publications (3)

Publication Number Publication Date
EP1965083A1 EP1965083A1 (en) 2008-09-03
EP1965083A4 true EP1965083A4 (en) 2009-11-11
EP1965083B1 EP1965083B1 (en) 2011-10-12

Family

ID=39135827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07806100A Active EP1965083B1 (en) 2006-08-30 2007-08-27 Hydraulic unit and method of controlling speed of motor in hydraulic unit

Country Status (7)

Country Link
US (1) US20090097986A1 (en)
EP (1) EP1965083B1 (en)
JP (1) JP4425253B2 (en)
KR (1) KR100954697B1 (en)
CN (1) CN101360917B (en)
AT (1) ATE528512T1 (en)
WO (1) WO2008026544A1 (en)

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CN101737379B (en) * 2008-11-21 2012-08-29 鸿富锦精密工业（深圳）有限公司 Speed-pressure control device of oil pressure type equipment
US8818649B2 (en) * 2009-06-25 2014-08-26 Hitachi Construction Machinery Co., Ltd. Rotation control device for working machine
DE102009059025A1 (en) * 2009-12-18 2011-06-22 Robert Bosch GmbH, 70469 Method for operating a hydraulic working machine
KR101095983B1 (en) 2011-04-19 2011-12-19 주식회사 하이드텍 Hydraulic transmission system and method for controlling thereof
KR101545677B1 (en) * 2011-12-16 2015-08-19 볼보 컨스트럭션 이큅먼트 에이비 Driver self-tuning method using electro-hydraulic actuator system
JP5884481B2 (en) * 2011-12-28 2016-03-15 株式会社ジェイテクト Motor control device and electric pump unit
DE102012009136A1 (en) 2012-05-05 2013-11-07 Robert Bosch Gmbh Method for operating a fluid pump
EP2664968A1 (en) 2012-05-16 2013-11-20 Siemens Aktiengesellschaft Control device for a hydraulic cylinder unit with single valve control
US9611931B2 (en) 2012-05-24 2017-04-04 GM Global Technology Operations LLC Method to detect loss of fluid or blockage in a hydraulic circuit using exponentially weighted moving average filter
JP6050081B2 (en) * 2012-10-05 2016-12-21 株式会社荏原製作所 Dry vacuum pump device
FR3005703B1 (en) * 2013-05-14 2016-08-19 Machine Smart HYDRAULIC SYSTEM WITH ELECTRONIC CONTROL OF PRESSURE AND FLOW
JP5673768B1 (en) * 2013-09-27 2015-02-18 ダイキン工業株式会社 Hydraulic device
JP6290602B2 (en) 2013-11-15 2018-03-07 オークマ株式会社 Hydraulic control 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
JP6396733B2 (en) 2014-09-22 2018-09-26 オークマ株式会社 Hydraulic control device
DE102016106483B4 (en) * 2016-04-08 2019-02-07 Jenaer Antriebstechnik Gmbh Method for compensation of cyclical disturbances during operation of a pump and control unit
DE102017117595A1 (en) * 2017-08-03 2019-02-07 Voith Patent Gmbh METHOD FOR CONTROLLING THE OUTPUT PRESSURE OF A HYDRAULIC DRIVE SYSTEM, USE OF THE METHOD AND HYDRAULIC DRIVE SYSTEM
JP6849078B2 (en) * 2017-08-28 2021-03-24 アイシン・エィ・ダブリュ株式会社 Control device
JP7010906B2 (en) * 2019-03-20 2022-01-26 ファナック株式会社 Processing machine and pressure adjustment method
DE102020107127A1 (en) 2019-03-20 2020-09-24 Fanuc Corporation PROCESSING MACHINE AND PRESSURE ADJUSTMENT METHOD
JP7346886B2 (en) * 2019-04-12 2023-09-20 マックス株式会社 air compressor

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EP1574723A1 (en) * 2002-11-15 2005-09-14 Daikin Industries, Ltd. Method and device for controlling temperature rise of autonomous inverter-driven hydraulic unit

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EP1574723A1 (en) * 2002-11-15 2005-09-14 Daikin Industries, Ltd. Method and device for controlling temperature rise of autonomous inverter-driven hydraulic unit

Also Published As

Publication number Publication date
KR20080087084A (en) 2008-09-30
JP2008057611A (en) 2008-03-13
CN101360917B (en) 2011-12-07
ATE528512T1 (en) 2011-10-15
EP1965083A1 (en) 2008-09-03
CN101360917A (en) 2009-02-04
JP4425253B2 (en) 2010-03-03
US20090097986A1 (en) 2009-04-16
WO2008026544A1 (en) 2008-03-06
EP1965083B1 (en) 2011-10-12
KR100954697B1 (en) 2010-04-26

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