WO2011162429A1 - 건설기계의 유압펌프 제어시스템 - Google Patents
건설기계의 유압펌프 제어시스템 Download PDFInfo
- Publication number
- WO2011162429A1 WO2011162429A1 PCT/KR2010/004097 KR2010004097W WO2011162429A1 WO 2011162429 A1 WO2011162429 A1 WO 2011162429A1 KR 2010004097 W KR2010004097 W KR 2010004097W WO 2011162429 A1 WO2011162429 A1 WO 2011162429A1
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- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic pump
- flow rate
- value
- pressure
- calculated
- Prior art date
Links
- 238000010276 construction Methods 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims description 42
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 239000010720 hydraulic oil Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims 4
- 239000012530 fluid Substances 0.000 abstract 1
- 230000001133 acceleration Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
Images
Classifications
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- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
- E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
- E02F9/12—Slewing or traversing gears
- E02F9/121—Turntables, i.e. structure rotatable about 360°
- E02F9/123—Drives or control devices specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2253—Controlling the travelling speed of vehicles, e.g. adjusting travelling speed according to implement loads, control of hydrostatic transmission
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2285—Pilot-operated systems
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2278—Hydraulic circuits
- E02F9/2296—Systems with a variable displacement pump
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- 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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/14—Control
-
- 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
- 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
- F15B2211/255—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
- F15B2211/60—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
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- 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
- F15B2211/6346—Electronic controllers using input signals representing a state of input means, e.g. joystick position
-
- 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
- F15B2211/6652—Control of the pressure source, e.g. control of the swash plate angle
-
- 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
- F15B2211/6654—Flow rate control
-
- 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
- F15B2211/6655—Power control, e.g. combined pressure and flow rate control
-
- 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
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7058—Rotary output members
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- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/85—Control during special operating conditions
- F15B2211/851—Control during special operating conditions during starting
Definitions
- the present invention relates to a hydraulic pump control system provided in a construction machine such as an excavator. Particularly, when the acceleration of the upper frame is rotated or accelerated by the driving motor for driving, the inertia is accelerated by the rotation.
- the present invention relates to a hydraulic pump control system of a construction machine that can supply as much hydraulic oil as necessary from a variable displacement hydraulic pump (hereinafter referred to as a "hydraulic pump”) to a hydraulic motor.
- the hydraulic construction machine of the variable displacement hydraulic pump according to the operation amount (meaning the pilot signal pressure supplied to the spool in proportion to the operation amount of the operating lever to switch the spool to control the oil flow) for energy saving.
- the operation amount meaning the pilot signal pressure supplied to the spool in proportion to the operation amount of the operating lever to switch the spool to control the oil flow
- the flow rate means the flow rate.
- fixed-capacity hydraulic motors are mostly used, and the flow rate that can flow into the hydraulic motor is limited to the product of the rotational speed and the volume of the hydraulic motor.
- Embodiments of the present invention relate to a hydraulic pump control system for a construction machine that can increase the efficiency by reducing the flow rate initially supplied to the hydraulic motor when rotating the inertial body by the hydraulic motor.
- Embodiments of the present invention relate to a hydraulic pump control system of a construction machine, in which a flow rate supply amount is reduced to reduce an impact even when a driver sharply manipulates an inertial body.
- Embodiments of the present invention relate to a hydraulic pump control system of a construction machine so that the driver does not feel the initial acceleration feeling falls without limiting the flow rate increase below a certain set value.
- Hydraulic pump control system of a construction machine according to an embodiment of the present invention
- a variable displacement hydraulic pump a hydraulic actuator connected to the hydraulic pump, a control valve for controlling the hydraulic oil supplied to the actuator at the time of switching by a signal pressure proportional to the operating amount of the operating lever, and a detection sensor for detecting the operating amount of the operating lever And a control unit for controlling the discharge flow rate of the hydraulic pump in accordance with the detection signal from the detection sensor,
- the flow rate supplied to the hydraulic motor can be reduced by limiting the rate of increase of the discharge flow rate of the hydraulic pump over time.
- Hydraulic pump control system of a construction machine according to another embodiment of the present invention
- a variable displacement hydraulic pump a hydraulic actuator connected to the hydraulic pump, a control valve for controlling hydraulic oil supplied to the actuator at the time of switching by a signal pressure proportional to the operating amount of the operating lever, and a detection sensor for detecting the operating amount of the operating lever And a detection sensor for detecting the discharge pressure of the hydraulic pump, and a control unit for controlling the discharge flow rate of the hydraulic pump in accordance with the detection signal from the detection sensor.
- Step 4 When the pressure value detected in the third step is larger than the pressure limit value, the subtracting value of the pressure value detected from the required flow rate according to the manipulated value and the difference value multiplied by a constant is set to the discharge flow rate of the hydraulic pump. Step 4,
- the detected pressure of the hydraulic pump may be fed back to the discharge flow rate of the hydraulic pump to reduce the flow rate supplied to the hydraulic motor.
- the torque is calculated using the detected pressure and the volume of the hydraulic pump,
- the volume of the hydraulic pump can be reduced so that the calculated torque value is limited over time.
- a specific pressure value is set.
- the difference value between the actual detected pressure value and the specific pressure value is multiplied by a certain constant.
- Hydraulic pump control system of a construction machine according to an embodiment of the present invention configured as described above has the following advantages.
- the flow rate supply amount is reduced to reduce the impact can increase the operating feeling.
- the dead zone without limiting the rate of increase in flow rate can be set to operate the initial acceleration force as the driver intends.
- 1 is a graph showing that when the inertial body of a construction machine is rotated and accelerated by a hydraulic motor, a part of the flow rate initially supplied from the hydraulic pump to the hydraulic motor is lost;
- FIG. 2 is a schematic diagram of a hydraulic circuit applied to a hydraulic pump control system of a construction machine according to an embodiment of the present invention
- FIG. 3 is a flow chart showing a hydraulic pump control system of a construction machine according to an embodiment of the present invention
- FIG. 4 is a graph showing a relationship between the actual discharge flow rate and the hydraulic pump discharge demand when limiting the flow rate increase rate of the hydraulic pump in the hydraulic pump control system of the construction machine according to an embodiment of the present invention
- FIG. 5 is a flow chart showing a hydraulic pump control system of a construction machine according to another embodiment of the present invention.
- Hydraulic pump control system of a construction machine according to an embodiment of the present invention shown in Figure 2 to 4,
- a variable displacement hydraulic pump (hereinafter referred to as "hydraulic pump") 2 and a pilot pump 3 connected to the engine 1 and a hydraulic actuator connected to the hydraulic pump 2 (for example, a hydraulic motor 4 ), And a control valve 6 (spool shown in the figure) for controlling the hydraulic oil supplied to the actuator at the time of switching by pilot signal pressure proportional to the operation amount of the operation lever 5, and
- a detection sensor (7) for detecting an operation amount of the lever (5)
- a control unit (9) for controlling the discharge flow rate of the hydraulic pump (2) in accordance with a detection signal from the detection sensor (7)
- the torque is calculated using the detected pressure and the volume of the hydraulic pump (2).
- the volume of the hydraulic pump may be reduced so that the calculated torque value is limited in size over time.
- a specific pressure value is set, and when the actual pressure value detected by the detection sensor 8 is larger than the specific pressure value, the actual detected pressure value and the specific pressure value
- the volume of the hydraulic pump 2 can be reduced by feeding back the flow rate control signal by multiplying the difference value by a certain constant.
- a specific torque value is set, and when the calculated torque value is larger than the specific torque value, the flow rate is obtained by multiplying the difference value between the calculated torque value and the specific torque value by a specific constant.
- the volume of the hydraulic pump 2 can be reduced by feeding back the control signal.
- the hydraulic pump 2 By calculating the horsepower using the actual pressure value detected by the above-described detection sensor 8 and the discharge flow rate of the hydraulic pump 2, the hydraulic pump 2 so that the calculated horsepower value is limited to increase over time Can reduce the discharge flow rate.
- reference numeral 10 denotes a proportional control valve for converting the signal pressure supplied from the operating lever 5 to be proportional to the control signal from the control unit 9 in order to control the discharge flow rate of the hydraulic pump 2.
- the operation amount of the operation lever 5 is detected by the above-described detection sensor 7 (see S100).
- the discharge flow rate Q1 required for the hydraulic pump 2 is calculated in accordance with the operation amount of the operation lever 5 described above. That is, the required flow rate relative to the operation amount of the operation lever 5 calculates the discharge flow rate Q1 by a relational expression or a table (not shown).
- the dead zone value means that the discharge flow rate of the hydraulic pump 2 is set so as not to limit the flow rate increase rate below the set value.
- the flow rate increase rate is calculated as the calculated required flow rate Q1.
- the discharge flow rate of the hydraulic pump 2 is set to a flow rate increase rate limit value smaller than the flow rate Q1 required for the hydraulic pump 2 according to the operation amount.
- the discharge flow rate value of the hydraulic pump 2 set in the sixth step (S600) or the seventh step (S700) is stored.
- Hydraulic pump control system of a construction machine according to another embodiment of the present invention shown in Figures 2 and 5, the hydraulic pump 2 and the pilot pump (3) connected to the engine (1), hydraulic pump (1)
- the discharge flow rate of the hydraulic pump 2 is controlled according to the spool, the detection sensor 7 which detects the operation amount of the operation lever 5, and the detection signal from the detection sensor 7 in the figure.
- the construction machine having a control unit 9 to
- the operation amount of the operation lever 5 is detected by the above-described detection sensor 7, and the discharge pressure of the hydraulic pump 2 is detected by the detection sensor 8 (see S1000).
- the discharge flow rate Q1 required for the hydraulic pump 2 is calculated in accordance with the operation amount of the operation lever 5 described above. That is, the required flow rate relative to the operation amount of the operation lever 5 calculates the discharge flow rate Q1 by a relational expression or a table (not shown).
- step S5000 the torque value multiplied by the volume can be used as the actual pressure value.
- the above-mentioned pressure limit value means a pressure value set so as not to interfere with the sensory functionality of the equipment while reducing the flow loss to the hydraulic motor (4) port relief valve.
- the hydraulic pump control system of the construction machine when the inertial body driven by the hydraulic motor 4 is accelerated to the rotation of the hydraulic pump (2) detected by the detection sensor
- the discharge pressure may be fed back to the discharge flow rate of the hydraulic pump 2 to reduce the flow rate supplied to the hydraulic motor 4.
- the flow rate supply amount can be reduced to increase the operational feeling.
- the dead zone without limiting the rate of increase of the flow rate can be set to operate the initial acceleration force as the driver intends.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
Claims (7)
- 가변용량형 유압펌프와, 유압펌프에 연결되는 유압 액츄에이터와, 조작레버의 조작량에 비례하는 신호압에 의해 절환시 액츄에이터에 공급되는 작동유를 제어하는 컨트롤밸브와, 조작레버의 조작량을 검출하는 검출센서와, 검출센서로부터의 검출신호에 따라 유압펌프의 토출유량을 제어하는 제어부를 구비하는 건설기계에 있어서:상기 검출센서에 의해 상기 조작레버의 조작량을 검출하는 제1단계와,상기 조작레버의 조작량에 따라 유압펌프에 요구되는 유량을 연산하는 제2단계와,연산된 유량과 미리 설정된 불감대 값의 크기를 비교 판단하는 제3단계와,연산된 유량이 불감대 값을 초과할 경우, 연산된 요구 유량으로서 유량 증가율을 연산하는 제4단계와,연산된 유량 증가율과 미리 설정된 유량 증가율 제한값의 크기를 비교 판단하는 제5단계와,연산된 유량 증가율이 유량 증가율 제한값을 초과할 경우, 조작량에 따라 유압펌프에 요구되는 유량보다 적은 유량 증가율 제한값으로 유압펌프의 토출유량을 설정하는 제6단계와,상기 제3단계에서 연산된 유량이 불감대 값 보다 작을 경우, 유압펌프의 토출유량을 조작량에 따른 요구 유량으로 설정하는 제7단계를 포함하여,유압모터에 의해 구동되는 관성체를 선회 가속시킬 경우, 시간 경과에 따라 유압펌프의 토출유량 증가율을 제한하여 상기 유압모터로 공급되는 유량을 감소시키는 것을 특징으로 하는 건설기계의 유압펌프 제어시스템.
- 제1항에 있어서, 상기 가변용량형 유압펌프의 토출유로에 설치되어 유압펌프의 토출 압력을 검출하는 검출센서를 포함하여, 검출된 압력과 유압펌프의 용적을 이용하여 토크를 연산하며, 연산된 토크 값이 시간의 경과에 따라 증가량이 제한되도록 유압펌프의 용적을 줄이는 것을 특징으로 하는 건설기계의 유압펌프 제어시스템.
- 제2항에 있어서, 상기 가변용량형 유압펌프의 토출유량을 제어할 경우 특정 압력값을 설정하여, 상기 검출센서에 의해 검출된 실제 압력값이 특정 압력값보다 클 경우, 실제 검출된 압력값과 특정 압력값의 차이값에 특정 상수를 곱하여 유량 제어신호에 피이드백하여 유압펌프의 용적을 줄이는 것을 특징으로 하는 건설기계의 유압펌프 제어시스템.
- 제2항에 있어서, 상기 가변용량형 유압펌프의 토출유량을 제어할 경우 특정 토크 값을 설정하여, 연산된 토크 값이 특정 토크 값보다 클 경우, 연산된 토크 값과 특정 토크 값의 차이값에 특정 상수를 곱하여 유량 제어신호에 피이드백하여 유압펌프의 용적을 줄이는 것을 특징으로 하는 건설기계의 유압펌프 제어시스템.
- 제2항에 있어서, 상기 검출센서에 의해 검출된 실제 압력값과 유압펌프의 토출유량을 이용하여 마력을 연산하여, 연산된 마력값이 시간의 경과에 따라 증가량이 제한되도록 유압펌프의 토출유량을 줄이는 것을 특징으로 하는 건설기계의 유압펌프 제어시스템.
- 제5항에 있어서, 상기 가변용량형 유압펌프의 토출유량을 제어할 경우 특정 마력 값을 설정하여, 연산된 마력 값이 특정 마력 값보다 클 경우, 연산된 마력 값과 특정 마력 값의 차이값에 특정 상수를 곱하여 유량 제어신호에 피이드백하여 유압펌프의 토출유량을 줄이는 것을 특징으로 하는 건설기계의 유압펌프 제어시스템.
- 가변용량형 유압펌프와, 유압펌프에 연결되는 유압 액츄에이터와, 조작레버의 조작량에 비례하는 신호압에 의해 절환시 액츄에이터에 공급되는 작동유를 제어하는 컨트롤밸브와, 조작레버의 조작량을 검출하는 검출센서와, 유압펌프의 토출 압력을 검출하는 검출센서와, 검출센서로부터의 검출신호에 따라 유압펌프의 토출 유량을 제어하는 제어부를 구비하는 건설기계에 있어서:상기 검출센서들에 의해 조작레버의 조작량과, 유압펌프의 토출 압력을 각각 검출하는 제1단계와,상기 조작레버의 조작량에 따라 유압펌프에 요구되는 유량을 연산하는 제2단계와,상기 압력센서에 의해 검출된 실제 압력값과 미리 설정된 압력 제한값의 크기를 비교 판단하는 제3단계와,상기 제3단계에 의해 검출된 압력값이 압력 제한값보다 클 경우, 조작량에 따른 요구 유량으로부터 검출된 압력값과 압력 제한값의 차이값에 상수를 곱한값을 감산한 것을 유압펌프의 토출유량으로 설정하는 제4단계와,상기 제3단계에 의해 검출된 압력값이 압력 제한값보다 작을 경우, 유압펌프의 토출유량을 조작량에 따른 요구 유량으로 설정하는 제5단계를 포함하여,유압모터에 의해 구동되는 관성체를 선회 가속시킬 경우, 유압펌프의 검출된 압력을 유압펌프의 토출유량에 피이드백하여 상기 유압모터로 공급되는 유량을 감소시키는 것을 특징으로 하는 건설기계의 유압펌프 제어시스템.
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PCT/KR2010/004097 WO2011162429A1 (ko) | 2010-06-24 | 2010-06-24 | 건설기계의 유압펌프 제어시스템 |
JP2013516482A JP5689531B2 (ja) | 2010-06-24 | 2010-06-24 | 建設機械の油圧ポンプ制御システム |
CN201080066909.7A CN102893035B (zh) | 2010-06-24 | 2010-06-24 | 用于建筑机械的液压泵控制系统 |
US13/700,969 US9194382B2 (en) | 2010-06-24 | 2010-06-24 | Hydraulic pump control system for construction machinery |
EP10853712.7A EP2587074B1 (en) | 2010-06-24 | 2010-06-24 | Hydraulic pump control system for construction machinery |
KR1020127025427A KR101728380B1 (ko) | 2010-06-24 | 2010-06-24 | 건설기계의 유압펌프 토출유량 제어방법 |
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EP (1) | EP2587074B1 (ko) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013234683A (ja) * | 2012-05-02 | 2013-11-21 | Toshiba Mach Co Ltd | 作業機械の旋回装置並びにその作業機械 |
US20150361995A1 (en) * | 2013-01-18 | 2015-12-17 | Volvo Construction Equipment Ab | Flow control device and flow control method for construction machine |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2587072B1 (en) * | 2010-06-28 | 2024-02-21 | Volvo Construction Equipment AB | Flow control system for a hydraulic pump of construction machinery |
WO2012011615A1 (ko) | 2010-07-19 | 2012-01-26 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계의 유압펌프 제어시스템 |
WO2012070703A1 (ko) | 2010-11-25 | 2012-05-31 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 유량 제어밸브 |
KR101847882B1 (ko) | 2010-12-28 | 2018-04-11 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 가변용량형 유압펌프 유량 제어방법 |
WO2014081053A1 (ko) | 2012-11-23 | 2014-05-30 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계의 우선 기능 제어장치 및 그 제어방법 |
WO2014129676A1 (ko) | 2013-02-19 | 2014-08-28 | 볼보 컨스트럭션 이큅먼트 에이비 | 보호장치가 구비된 건설기계용 유압시스템 |
KR20160023710A (ko) | 2013-06-28 | 2016-03-03 | 볼보 컨스트럭션 이큅먼트 에이비 | 플로팅기능을 갖는 건설기계용 유압회로 및 플로팅기능 제어방법 |
WO2015012423A1 (ko) | 2013-07-24 | 2015-01-29 | 볼보 컨스트럭션 이큅먼트 에이비 | 건설기계용 유압회로 |
CN103452925B (zh) * | 2013-09-24 | 2015-07-29 | 徐工集团工程机械股份有限公司 | 起重机微动控制方法和系统 |
CN107250462A (zh) * | 2015-01-08 | 2017-10-13 | 沃尔沃建筑设备公司 | 用于控制建筑机械的液压泵的流量的方法 |
US10337172B2 (en) | 2015-01-27 | 2019-07-02 | Volvo Construction Equipment Ab | Hydraulic control system |
CN108368693B (zh) * | 2015-12-16 | 2020-09-08 | 斗山英维高株式会社 | 工程机械的行驶冲击减少装置及利用其的工程机械的控制方法 |
JP7205264B2 (ja) * | 2019-02-05 | 2023-01-17 | コベルコ建機株式会社 | 作業機械の旋回駆動装置 |
BR112022005335A2 (pt) * | 2019-09-25 | 2022-06-14 | Tigercat Ind Inc | Sistema e método para controle de equipamentos silviculturais |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR950004531B1 (ko) * | 1989-08-21 | 1995-05-02 | 히다찌 겐끼 가부시기가이샤 | 토목 건설기계의 유압구동장치 |
JP2001182719A (ja) * | 1999-12-24 | 2001-07-06 | Shin Caterpillar Mitsubishi Ltd | 流体圧回路における負荷圧力推定方法およびその装置 |
JP2003206902A (ja) * | 2001-12-28 | 2003-07-25 | Caterpillar Inc | 流体システムの不感帯を制御する方法 |
JP2003239906A (ja) * | 2001-12-28 | 2003-08-27 | Caterpillar Inc | 流体流量制御システムおよび方法 |
KR20080091847A (ko) * | 2006-02-08 | 2008-10-14 | 히다치 겡키 가부시키 가이샤 | 유압 구동식 산업기계 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2782249B2 (ja) | 1989-09-23 | 1998-07-30 | 株式会社加藤製作所 | 特殊車両におけるアクチュエータの制御回路 |
JP3552735B2 (ja) * | 1993-08-23 | 2004-08-11 | カヤバ工業株式会社 | 建設機械の油圧回路 |
JP3419614B2 (ja) | 1995-12-18 | 2003-06-23 | 日立建機株式会社 | 油圧駆動装置 |
JP4107694B2 (ja) | 1997-02-18 | 2008-06-25 | 株式会社タダノ | 作業機の制御装置 |
JP3511453B2 (ja) | 1997-10-08 | 2004-03-29 | 日立建機株式会社 | 油圧建設機械の原動機と油圧ポンプの制御装置 |
JP2004347040A (ja) | 2003-05-22 | 2004-12-09 | Kobelco Contstruction Machinery Ltd | 作業機械の制御装置 |
JP4096900B2 (ja) * | 2004-03-17 | 2008-06-04 | コベルコ建機株式会社 | 作業機械の油圧制御回路 |
JP2006177560A (ja) | 2006-01-10 | 2006-07-06 | Komatsu Ltd | 油圧駆動機械の制御装置 |
-
2010
- 2010-06-24 JP JP2013516482A patent/JP5689531B2/ja active Active
- 2010-06-24 CN CN201080066909.7A patent/CN102893035B/zh active Active
- 2010-06-24 US US13/700,969 patent/US9194382B2/en not_active Expired - Fee Related
- 2010-06-24 KR KR1020127025427A patent/KR101728380B1/ko active Active
- 2010-06-24 WO PCT/KR2010/004097 patent/WO2011162429A1/ko active Application Filing
- 2010-06-24 EP EP10853712.7A patent/EP2587074B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR950004531B1 (ko) * | 1989-08-21 | 1995-05-02 | 히다찌 겐끼 가부시기가이샤 | 토목 건설기계의 유압구동장치 |
JP2001182719A (ja) * | 1999-12-24 | 2001-07-06 | Shin Caterpillar Mitsubishi Ltd | 流体圧回路における負荷圧力推定方法およびその装置 |
JP2003206902A (ja) * | 2001-12-28 | 2003-07-25 | Caterpillar Inc | 流体システムの不感帯を制御する方法 |
JP2003239906A (ja) * | 2001-12-28 | 2003-08-27 | Caterpillar Inc | 流体流量制御システムおよび方法 |
KR20080091847A (ko) * | 2006-02-08 | 2008-10-14 | 히다치 겡키 가부시키 가이샤 | 유압 구동식 산업기계 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2587074A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013234683A (ja) * | 2012-05-02 | 2013-11-21 | Toshiba Mach Co Ltd | 作業機械の旋回装置並びにその作業機械 |
US20150361995A1 (en) * | 2013-01-18 | 2015-12-17 | Volvo Construction Equipment Ab | Flow control device and flow control method for construction machine |
US10001146B2 (en) * | 2013-01-18 | 2018-06-19 | Volvo Construction Equipment Ab | Flow control device and flow control method for construction machine |
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KR101728380B1 (ko) | 2017-04-19 |
EP2587074B1 (en) | 2015-09-16 |
CN102893035B (zh) | 2015-09-30 |
JP2013531201A (ja) | 2013-08-01 |
US20130098021A1 (en) | 2013-04-25 |
EP2587074A1 (en) | 2013-05-01 |
JP5689531B2 (ja) | 2015-03-25 |
EP2587074A4 (en) | 2014-04-02 |
KR20130100046A (ko) | 2013-09-09 |
US9194382B2 (en) | 2015-11-24 |
CN102893035A (zh) | 2013-01-23 |
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