WO2008026544A1 - Unité hydraulique et procédé permettant de commander la vitesse du moteur dans une unité hydraulique - Google Patents

Unité hydraulique et procédé permettant de commander la vitesse du moteur dans une unité hydraulique Download PDF

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Publication number
WO2008026544A1
WO2008026544A1 PCT/JP2007/066559 JP2007066559W WO2008026544A1 WO 2008026544 A1 WO2008026544 A1 WO 2008026544A1 JP 2007066559 W JP2007066559 W JP 2007066559W WO 2008026544 A1 WO2008026544 A1 WO 2008026544A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
hydraulic
command value
hydraulic unit
load
Prior art date
Application number
PCT/JP2007/066559
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Tetsuo Nakata
Junichi Miyagi
Yasuto Yanagida
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.
Priority to EP07806100A priority Critical patent/EP1965083B1/en
Priority to CN2007800015363A priority patent/CN101360917B/zh
Priority to AT07806100T priority patent/ATE528512T1/de
Priority to US12/160,003 priority patent/US20090097986A1/en
Publication of WO2008026544A1 publication Critical patent/WO2008026544A1/ja

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

Definitions

  • the present invention relates to a hydraulic unit that drives a hydraulic pump by a motor.
  • a speed control (PI control) calculation is executed by comparing the motor speed command value with the current rotational speed.
  • the current command value is calculated, and current control based on the current command value is realized by the inverter.
  • the pressure oil is discharged from the hydraulic pump by driving a motor controlled by an inverter.
  • Patent Document 1 Japanese Unexamined Patent Application Publication No. 2004-162860
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a technique capable of improving the followability of the rotational speed of the motor with respect to changes in the load of the hydraulic pump.
  • a first aspect of the hydraulic unit according to the present invention is a hydraulic unit that drives a hydraulic pump (16A) by a motor (15) and supplies oil to an actuator.
  • An inverter (14) for supplying electric power, a load sensor (17) for detecting a load of the hydraulic pump (16A), a rotation sensor (21) for detecting a rotation speed of the motor (15), and the motor Current command value calculating means (12) for calculating a current command value so that the deviation between the speed command value representing the target rotation speed in (15) and the rotation speed of the motor (15) converges to zero; Correction means (18A; ⁇ ; 18D) for correcting the current command value based on the pump load, and control for outputting a control signal to the inverter (14) based on the corrected current command value And a signal generation means (13).
  • a second aspect of the hydraulic unit is the first aspect, wherein the correction means (18A
  • a third aspect of the hydraulic unit is the first or second aspect thereof, wherein the correction means (18A; ⁇ ; 18D) includes a load of the hydraulic pump (16A). The current command value is increased with the increase.
  • the fourth aspect of the hydraulic unit is any one of the first to third aspects, wherein the correction means (18A) performs correction using a preset correction coefficient (Kf). A value (If) is acquired, and the correction value (If) is added to the current command value.
  • a fifth aspect of the hydraulic unit is any one of the first to third aspects, wherein the correction means (18B; 18C; 18D) uses a data table DT acquired in advance. Then, a correction value (If) is obtained, and the correction value (If) is added to the current command value.
  • a sixth aspect of the hydraulic unit is any one of the first to fifth aspects, wherein the load sensor (17) is provided in a discharge line (19) of the hydraulic pump (16A). It is a pressure sensor (17) that detects the oil pressure.
  • a method for controlling the speed of the motor (15) comprising: a) detecting the load of the hydraulic pump (16A), b) detecting the rotational speed of the motor (15), and c) the motor (15). ) Calculating the current command value so that the deviation between the speed command value representing the target rotation speed and the rotation speed of the motor (15) converges on the opening; d) the load of the hydraulic pump (16A) And a step of: e) outputting a control signal to the inverter (14) based on the corrected current command value based on the current command value.
  • the current command value is corrected based on the load of the hydraulic pump, so that the load of the hydraulic pump (load hydraulic pressure) varies. It is possible to improve the followability of the rotational speed of the motor with respect to the motor.
  • the current command value is corrected so as to increase the rotational speed of the motor as the load of the hydraulic pump increases. It is possible to prevent a decrease in the rotation speed of the motor due to an increase in the motor.
  • FIG. 1 is a schematic view showing a configuration of a hydraulic unit according to an embodiment.
  • FIG. 2 is a schematic diagram showing the configuration of a hydraulic unit that does not have a correction unit.
  • FIG. 3 is a diagram showing an operation state when a stepped speed command is given in the hydraulic unit according to the embodiment.
  • FIG. 4 is a diagram showing an operation state when a stepped speed command is given to a hydraulic unit without a correction unit!
  • FIG. 5 is a schematic diagram showing a hydraulic unit having a correction unit capable of acquiring a correction value using a data table.
  • FIG. 6 is a schematic diagram showing a hydraulic unit that drives two hydraulic pumps with one motor.
  • FIG. 7 is a schematic diagram showing a hydraulic unit in which two hydraulic pumps are connected in series.
  • FIG. 1 is a schematic diagram showing the configuration of a hydraulic unit 10A according to an embodiment of the present invention.
  • the hydraulic unit 10A is connected to, for example, a molding machine and supplies oil as a working fluid to an actuator (not shown) that uses hydraulic pressure as a power source.
  • the hydraulic unit 10 A includes a controller 20, an inverter unit 14, a motor 15, a hydraulic pump 16 A, a pressure sensor 17, and a pulse generator 21.
  • the hydraulic unit 10A having such a configuration, oil is sucked from a tank (not shown) by a hydraulic pump 16A driven by a motor 15, and the oil is discharged.
  • the discharged oil passes through a discharge line 19 and is supplied to an actuator such as a hydraulic cylinder or a hydraulic motor.
  • the pressure sensor 17 functions as a load sensor for detecting the load of the hydraulic pump.
  • the pressure sensor 17 detects the oil pressure (also referred to as “current pressure” or “load oil pressure”) in the discharge line 19 of the hydraulic pump.
  • the pulse generator 21 functions as a rotation sensor that outputs a noise signal for detecting the rotation speed of the motor to the controller 20 (speed detection unit 22).
  • the inverter unit 14 controls the number of rotations of the motor 15 by performing switching based on a control signal from the controller 20.
  • the controller 20 includes a P-Q control unit 11, a current command value calculation unit 12, a correction unit 18A, and a control signal. A signal generation unit 13 and a speed detection unit 22 are included. Then, the controller 20 outputs a control signal for driving the inverter.
  • the P—Q control unit 11 generates a discharge pressure-discharge flow rate characteristic (P—Q characteristic) based on a set pressure and a set flow rate from a host system such as a molding machine. Then, the PQ controller 11 outputs the speed command value with the current pressure from the pressure sensor 17 as an input.
  • P—Q characteristic discharge pressure-discharge flow rate characteristic
  • a current command value calculation unit (also referred to as “PI control unit") 12 performs proportional integration (PI) control with the speed command value and the current speed as inputs, and outputs a current command value. More specifically, the PI control unit 12 calculates the current command value so that the deviation between the speed command value indicating the target rotation speed of the motor 15 and the rotation speed of the motor 15 converges to zero.
  • PI control unit proportional integration
  • the correction unit 18A corrects the current command value based on the current pressure from the pressure sensor 17.
  • the control signal generation unit 13 generates a control signal for controlling the inverter unit 14 based on the corrected current command value.
  • FIG. 2 is a schematic diagram showing a configuration of a general hydraulic unit 10B.
  • the hydraulic unit 10B has the same configuration as the hydraulic unit 10A, except that the correction unit 18A is not provided.
  • the molding machine to which the hydraulic unit 10B is connected is required to have high responsiveness from the viewpoint of mass production. For this reason, in the hydraulic unit 10B that drives the molding machine, stepped speed commands are given in a short cycle.
  • a correction unit 18A that corrects the current command value based on the load hydraulic pressure is provided.
  • the correction value (current correction value) If is acquired using the current pressure (pressure detection value) Pd detected by the pressure sensor 17 and the correction coefficient Kf acquired in advance. Then, the correction value If is added (added) to the current command value output from the current command value calculation unit 12.
  • the current command value is corrected based on the load of the hydraulic pump 16A, that is, the oil pressure (load oil pressure) in the discharge line 19. Therefore, it is possible to improve (improve) the follow-up performance of the rotational speed of the motor 15 with respect to fluctuations in the load (load hydraulic pressure) of the hydraulic pump 16A.
  • the correction coefficient Kf a coefficient acquired in advance by a test is used. Specifically, the correction coefficient Kf is set so that the correction unit 18A can acquire a current command value required to prevent a decrease in the rotational speed of the motor 15 and follow the speed command. In addition, the correction coefficient Kf is expressed to be set so that the shortage of the current command value required to prevent the motor 15 from rotating and follow the speed command can be acquired as a correction value. I'll do it with power.
  • the rotation speed of the motor 15 is given by the speed command value.
  • the rotation speed can be controlled.
  • the correction value If acquired using the correction coefficient Kf increases as the load hydraulic pressure increases.
  • the correction unit 18A can correct the current command value so as to increase the rotation speed of the motor 15 as the load hydraulic pressure increases, and the rotation speed of the motor 15 decreases as the load hydraulic pressure increases. Is prevented.
  • FIG. 3 is a diagram showing the behavior of the hydraulic unit 10A according to the present embodiment when a step speed command SC is given.
  • the correction unit 18A obtains a correction value If that increases the value as the load hydraulic pressure Pdl increases. Then, the correction value If is added to the output from the current command value calculation unit 12, and the corrected current command value Icl is acquired (see FIG. 3B). In this way, the current command value Icl increases with the increase in the load hydraulic pressure Pdl, so that a decrease in the rotational speed Rsl of the motor 15 due to an increase in the load torque is prevented. Then, the rotational speed Rsl of the motor 15 can be made to follow the rotational speed given by the speed command SC.
  • FIG. 4 is a diagram showing the behavior of the hydraulic unit 10B when the stepped speed command SC is given.
  • a correction value If that increases as the load hydraulic pressure Pd increases is acquired using the load hydraulic pressure Pd detected by the pressure sensor 17 in the correction unit 18A and the correction coefficient Kf acquired in advance. Is done. Then, the correction value If is added to the current command value output from the current command value calculation unit 12.
  • FIG. 5 is a schematic diagram showing a hydraulic unit 10C having a correction unit 18B that can acquire the correction value If using the data table DT.
  • the correction unit 18B performs correction using the data table DT indicating the relationship between the load oil pressure (pressure detection value) Pd acquired in advance and the correction value If.
  • the value If may be obtained (calculated).
  • FIG. 6 is a schematic diagram showing a hydraulic unit 10D that drives two hydraulic pumps 16A and 16B with one motor.
  • any hydraulic pump is driven from the PQ control unit 11 in accordance with the pump switching.
  • (Pump drive information) indicating whether or not the correction is performed is output to the correction unit 18C.
  • the data table for acquiring the correction value If is switched according to the pump drive information, and the correction value If corresponding to the pump being driven is acquired.
  • a data table showing the relationship between the load hydraulic pressure (pressure detection value) Pd and the correction value If when 16A and 16B are driven simultaneously is used to obtain the correction value If.
  • FIG. 7 is a schematic diagram showing a hydraulic unit in which two hydraulic pumps are connected in series. As shown in FIG. 7, when two hydraulic pumps are connected in series so that oil discharged from one hydraulic pump 16B is sucked into the other hydraulic pump 16A, the downstream hydraulic pump 1 The pressure of oil discharged from 6A is detected by the pressure sensor (17). The current command value is corrected based on the hydraulic pressure discharged from the downstream hydraulic pump 16A.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Electric Motors In General (AREA)
PCT/JP2007/066559 2006-08-30 2007-08-27 Unité hydraulique et procédé permettant de commander la vitesse du moteur dans une unité hydraulique WO2008026544A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP07806100A EP1965083B1 (en) 2006-08-30 2007-08-27 Hydraulic unit and method of controlling speed of motor in hydraulic unit
CN2007800015363A CN101360917B (zh) 2006-08-30 2007-08-27 液压单元和液压单元中的电动机的速度控制方法
AT07806100T ATE528512T1 (de) 2006-08-30 2007-08-27 Hydraulische einheit und verfahren zur steuerung der drehzahl eines motors in der hydraulischen einheit
US12/160,003 US20090097986A1 (en) 2006-08-30 2007-08-27 Oil pressure unit and speed control method of motor in oil pressure unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006233529A JP4425253B2 (ja) 2006-08-30 2006-08-30 油圧ユニットおよび油圧ユニットにおけるモータの速度制御方法
JP2006-233529 2006-08-30

Publications (1)

Publication Number Publication Date
WO2008026544A1 true WO2008026544A1 (fr) 2008-03-06

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PCT/JP2007/066559 WO2008026544A1 (fr) 2006-08-30 2007-08-27 Unité hydraulique et procédé permettant de commander la vitesse du moteur dans une unité hydraulique

Country Status (7)

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

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CN101737379B (zh) * 2008-11-21 2012-08-29 鸿富锦精密工业（深圳）有限公司 油压式设备的速度-压力控制装置
KR101379970B1 (ko) * 2009-06-25 2014-04-01 히다찌 겐끼 가부시키가이샤 작업 기계의 선회 제어 장치
DE102009059025A1 (de) * 2009-12-18 2011-06-22 Robert Bosch GmbH, 70469 Verfahren zum Betrieb einer hydraulischen Arbeitsmaschine
KR101095983B1 (ko) 2011-04-19 2011-12-19 주식회사 하이드텍 유압 전동 시스템 및 그의 제어 방법
WO2013089299A1 (ko) * 2011-12-16 2013-06-20 볼보 컨스트럭션 이큅먼트 에이비 전자 유압 액츄에이터 시스템을 이용한 운전자 자가 튜닝 방법
JP5884481B2 (ja) * 2011-12-28 2016-03-15 株式会社ジェイテクト モータ制御装置および電動ポンプユニット
DE102012009136A1 (de) 2012-05-05 2013-11-07 Robert Bosch Gmbh Verfahren zum Betreiben einer Fluidpumpe
EP2664968A1 (de) * 2012-05-16 2013-11-20 Siemens Aktiengesellschaft Regeleinrichtung für eine Hydraulikzylindereinheit mit Einzelventilsteuerung
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 (ja) * 2012-10-05 2016-12-21 株式会社荏原製作所 ドライ真空ポンプ装置
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JP5673768B1 (ja) * 2013-09-27 2015-02-18 ダイキン工業株式会社 油圧装置
JP6290602B2 (ja) * 2013-11-15 2018-03-07 オークマ株式会社 油圧制御装置
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EP1965083B1 (en) 2011-10-12
ATE528512T1 (de) 2011-10-15
JP4425253B2 (ja) 2010-03-03
EP1965083A1 (en) 2008-09-03
EP1965083A4 (en) 2009-11-11
KR100954697B1 (ko) 2010-04-26
CN101360917A (zh) 2009-02-04

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