KR950003643A - 유압펌프의 토출유량 제어방법 - Google Patents

유압펌프의 토출유량 제어방법 Download PDF

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Publication number
KR950003643A
KR950003643A KR1019930012454A KR930012454A KR950003643A KR 950003643 A KR950003643 A KR 950003643A KR 1019930012454 A KR1019930012454 A KR 1019930012454A KR 930012454 A KR930012454 A KR 930012454A KR 950003643 A KR950003643 A KR 950003643A
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KR
South Korea
Prior art keywords
flow rate
pump
actuator
calculating
discharge flow
Prior art date
Application number
KR1019930012454A
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English (en)
Other versions
KR0152300B1 (ko
Inventor
이진한
Original Assignee
김연수
삼성중공업 주식회사
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 김연수, 삼성중공업 주식회사 filed Critical 김연수
Priority to KR1019930012454A priority Critical patent/KR0152300B1/ko
Priority to JP6026180A priority patent/JP2807751B2/ja
Priority to DE69409442T priority patent/DE69409442T2/de
Priority to EP94106424A priority patent/EP0632355B1/en
Priority to US08/233,517 priority patent/US5659485A/en
Publication of KR950003643A publication Critical patent/KR950003643A/ko
Application granted granted Critical
Publication of KR0152300B1 publication Critical patent/KR0152300B1/ko

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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
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
    • G05D7/0682—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources using a plurality of flow sources
    • 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
    • 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
    • F04B2201/1205—Position of a non-rotating inclined plate
    • F04B2201/12051—Angular position
    • 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
    • F04B2203/06—Motor parameters of internal combustion engines
    • F04B2203/0605—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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2207/00—External parameters
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

본 발명은 유압기계의 제어에 있어서 유압펌프의 요구유량과 토출유량간의 오차로 인하여 작동기를 정확한 위치로 이동할 수 없는 결함을 개선하기 위한 유압기계의 펌프토출유량 제어방법에 관한 것으로, 펌프토출 요구유량이 입력되면 경전각검출수단을 통해 사판의 경전각을 검출하고 회전수 검출수단으로부터 엔진의 회전수를 읽어들여 유압펌프의 실제 토출유량을 연산하고, 펌프의 요구유량과 실제 토출유량간의 편차와 작동기편차를 구하여 펌프보유량값을 연산하고 이 값을 전압신호로 변환하여 펌프의 토출량을 보정한다.

Description

유압펌프의 토출유량 제어방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 본 발명이 적용되는 유압시스템의 예로서 굴삭기 시스템의 구성을 개략적으로 나타낸 블럭도, 제 2 도는 제 1 도에 도시된 제어부의 내부구성을 나타낸 블럭도, 제 3 도는 본 발명에 따른 제어방법을 설명하기 위한 흐름도.

Claims (1)

  1. 유압기계에서 임의의 작업을 위해 각 작동기를 정확하게 움직여 소정의 동작이 오차없이 수행될 수 있도록 유압펌프의 토출유량을 제어하는 방법에 있어서, 작업수행에 요구되는 위치로 작동기를 움직이기 위한 조작데이타로부터 상기 작동기의 요구유량(qi)을 계산한 후 상기 펌프에 작용하는 부하압력(pi)에 따라서 상기 펌프의 토출가능유량(Qri)을 계산하는 스텝(41,42)과, 상기 소정의 동작을 위해 상기 펌프가 토출해야 할 것으로 요구되는 요구유량(Qri)계산하고 엔진의 회전수(Ne)와 사판의 경전각(αi) 및 상기 작동기의 작동량(θi)을 읽어들이는 스텝(43,44)과, 상기 회전수(Ne)와 상기 경전각(αi) 및 상기 작동량(θi)으로부터 상기 펌프의 실제토출유량(Ｑei)을 계산한 후 상기 펌프로부터 상기 작동기에 실제로 제공된 작동유량(Ｑai)을 계산하는 스텝(45,46)과, 상기 펌프의 상기 요구유량(Ｑri)과 상기 실제 토출유량(Ｑei)길이 펌프유량편차(dＱei)와 상기 요구유량(Ｑri)과 상기 작동유량(Ｑai)간의 작동기유량편차(dＱai)를 각각 구하는 스텝(47)과, 상기 펌프유량편차(dＱei)와 상기 작동기유량편차(dＱai)간의 상대적인 크기에 따라 상기 소정의 동작을 수행하는데 가장 적합한 유량인 상기 펌프의 목표토출유량(Ｑoi)을 계산하고 이를 전압신호로 변환하여 출력하여 상기 펌프의 토출량을 보정하는 스텝(48,49)을 포함하는 것을 특징으로 하는 유압펌프의 토출유량 제어방법.
    ※ 참고사항 ： 최초출원 내용에 의하여 공개하는 것임.
KR1019930012454A 1993-07-02 1993-07-02 유압펌프의 토출유량 제어방법 KR0152300B1 (ko)

Priority Applications (5)

Application Number Priority Date Filing Date Title
KR1019930012454A KR0152300B1 (ko) 1993-07-02 1993-07-02 유압펌프의 토출유량 제어방법
JP6026180A JP2807751B2 (ja) 1993-07-02 1994-01-28 油圧ポンプの吐出流量制御装置及び方法
DE69409442T DE69409442T2 (de) 1993-07-02 1994-04-25 Verfahren und Vorrichtung zur Durchflusssteuerung einer Hydraulikpumpe
EP94106424A EP0632355B1 (en) 1993-07-02 1994-04-25 Discharge flow control system and method in hydraulic pump
US08/233,517 US5659485A (en) 1993-07-02 1994-04-26 Discharge flow control system and method in hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930012454A KR0152300B1 (ko) 1993-07-02 1993-07-02 유압펌프의 토출유량 제어방법

Publications (2)

Publication Number Publication Date
KR950003643A true KR950003643A (ko) 1995-02-17
KR0152300B1 KR0152300B1 (ko) 1998-10-15

Family

ID=19358661

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930012454A KR0152300B1 (ko) 1993-07-02 1993-07-02 유압펌프의 토출유량 제어방법

Country Status (5)

Country Link
US (1) US5659485A (ko)
EP (1) EP0632355B1 (ko)
JP (1) JP2807751B2 (ko)
KR (1) KR0152300B1 (ko)
DE (1) DE69409442T2 (ko)

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US9790965B2 (en) 2013-02-19 2017-10-17 Volvo Construction Equipment Ab Hydraulic system for construction machine, provided with protection device

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WO2010074507A2 (ko) * 2008-12-24 2010-07-01 두산인프라코어 주식회사 건설기계의 유압펌프 제어장치
US8113033B2 (en) * 2009-06-08 2012-02-14 Cnh America Llc Method to calibrate a flow balance valve on a windrower draper header
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KR101754423B1 (ko) * 2010-12-22 2017-07-20 두산인프라코어 주식회사 굴삭기의 유압펌프 제어방법
US8935009B2 (en) * 2011-05-06 2015-01-13 Caterpillar Inc. Method and apparatus for controlling multiple variable displacement hydraulic pumps
DE102014001981B4 (de) * 2014-02-17 2023-04-27 Robert Bosch Gmbh Dynamischer Sollwertausgleich bei drehzahlvariablen Verstellpumpen
KR101726509B1 (ko) * 2015-09-02 2017-04-12 윤영원 중량물 리프트의 고압화 유압 동조 장치
US10196131B2 (en) * 2016-02-16 2019-02-05 The Boeing Company Hydraulic system and method for an aircraft flight control system
KR102027152B1 (ko) 2018-06-21 2019-10-01 김대철 크레인용 펌프 어셈블리

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9790965B2 (en) 2013-02-19 2017-10-17 Volvo Construction Equipment Ab Hydraulic system for construction machine, provided with protection device

Also Published As

Publication number Publication date
DE69409442T2 (de) 1998-11-26
JPH0742199A (ja) 1995-02-10
EP0632355A2 (en) 1995-01-04
EP0632355B1 (en) 1998-04-08
JP2807751B2 (ja) 1998-10-08
DE69409442D1 (de) 1998-05-14
EP0632355A3 (en) 1995-02-15
US5659485A (en) 1997-08-19
KR0152300B1 (ko) 1998-10-15

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