EP0796952A4 - Control system for construction machine - Google Patents
Control system for construction machineInfo
- Publication number
- EP0796952A4 EP0796952A4 EP96932847A EP96932847A EP0796952A4 EP 0796952 A4 EP0796952 A4 EP 0796952A4 EP 96932847 A EP96932847 A EP 96932847A EP 96932847 A EP96932847 A EP 96932847A EP 0796952 A4 EP0796952 A4 EP 0796952A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- construction machine
- control system
- control
- actuators
- information
- 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.)
- Withdrawn
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
-
- 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
-
- 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
- E02F9/2025—Particular purposes of control systems not otherwise provided for
-
- 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
-
- 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
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
-
- 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
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- 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
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
-
- 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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
-
- 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
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
-
- 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
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
-
- 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
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
-
- 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
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- 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
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41509—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source and a directional control valve
-
- 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
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
-
- 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
- F15B2211/40—Flow control
- F15B2211/455—Control of flow in the feed line, i.e. meter-in 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
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
-
- 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
- F15B2211/50—Pressure control
- F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
- F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a return line
-
- 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
- F15B2211/50—Pressure control
- F15B2211/52—Pressure control characterised by the type of actuation
- F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid 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
- F15B2211/50—Pressure control
- F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief valve
-
- 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
- F15B2211/625—Accumulators
-
- 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
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load 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
- F15B2211/632—Electronic controllers using input signals representing a flow rate
- F15B2211/6326—Electronic controllers using input signals representing a flow rate the flow rate being an output member flow rate
-
- 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6333—Electronic controllers using input signals representing a state of the pressure source, e.g. 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
-
- 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
- F15B2211/6656—Closed loop control, i.e. control using feedback
-
- 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
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
- F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
A control system for a construction machine, comprising a controller including a valve control (31), wherein in response to a command from a control member (30A, 30B) and to the output from a detector, the valve control (31) on the controller acts as a distributor to compare information (Qra, Qrb) on the demand of actuators (7A, 7B) specified by control members (30A, 30B) with the information on the flow from a working fluid supply, thereby determining optimum flow rates to the actuators (7A, 7B).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP261869/95 | 1995-10-09 | ||
JP26186995 | 1995-10-09 | ||
PCT/JP1996/002926 WO1997013929A1 (en) | 1995-10-09 | 1996-10-08 | Control system for construction machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0796952A1 EP0796952A1 (en) | 1997-09-24 |
EP0796952A4 true EP0796952A4 (en) | 2000-01-19 |
Family
ID=17367893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96932847A Withdrawn EP0796952A4 (en) | 1995-10-09 | 1996-10-08 | Control system for construction machine |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0796952A4 (en) |
JP (1) | JP3677296B2 (en) |
KR (1) | KR100212771B1 (en) |
CN (1) | CN1166192A (en) |
CA (1) | CA2201626A1 (en) |
WO (1) | WO1997013929A1 (en) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3511453B2 (en) * | 1997-10-08 | 2004-03-29 | 日立建機株式会社 | Control device for prime mover and hydraulic pump of hydraulic construction machine |
US6233511B1 (en) * | 1997-11-26 | 2001-05-15 | Case Corporation | Electronic control for a two-axis work implement |
US6115660A (en) * | 1997-11-26 | 2000-09-05 | Case Corporation | Electronic coordinated control for a two-axis work implement |
US6073442A (en) * | 1998-04-23 | 2000-06-13 | Caterpillar Inc. | Apparatus and method for controlling a variable displacement pump |
EP1083337B1 (en) * | 1999-08-31 | 2007-01-24 | Nabtesco Corporation | Hydraulic drive apparatus |
DE10012409A1 (en) * | 2000-03-15 | 2001-09-20 | Mannesmann Rexroth Ag | Hydraulic actuator control for application with machine tools, has electrically actuated valve provided with pressure sensor for detecting pressure in region of output connection of valve |
EP1553308A1 (en) * | 2002-07-11 | 2005-07-13 | Nabtesco Corporation | Electrohydraulic actuation system |
US6779340B2 (en) * | 2002-09-25 | 2004-08-24 | Husco International, Inc. | Method of sharing flow of fluid among multiple hydraulic functions in a velocity based control system |
US6718759B1 (en) * | 2002-09-25 | 2004-04-13 | Husco International, Inc. | Velocity based method for controlling a hydraulic system |
US6732512B2 (en) * | 2002-09-25 | 2004-05-11 | Husco International, Inc. | Velocity based electronic control system for operating hydraulic equipment |
DE10342037A1 (en) | 2003-09-11 | 2005-04-07 | Bosch Rexroth Ag | Control arrangement and method for pressure medium supply of at least two hydraulic consumers |
DE102005059240A1 (en) * | 2005-12-12 | 2007-06-14 | Linde Ag | Hydrostatic drive system for controlling load of e.g. ground conveyor, has pump with delivery volume adjusting device that is controllable by control device, and circulating device managing connection of feed pipe of pump with container |
JP4524679B2 (en) * | 2006-03-15 | 2010-08-18 | コベルコ建機株式会社 | Hybrid construction machinery |
WO2010030830A1 (en) * | 2008-09-11 | 2010-03-18 | Parker Hannifin Corporation | Method of controlling an electro-hydraulic actuator system having multiple functions |
JP5135169B2 (en) * | 2008-10-31 | 2013-01-30 | 日立建機株式会社 | Hydraulic drive unit for construction machinery |
CN102305224B (en) * | 2011-03-16 | 2014-11-19 | 昆山航天智能技术有限公司 | Dual-valve flow converging hydraulic control system |
CN102493656B (en) * | 2011-12-26 | 2014-05-21 | 三一汽车制造有限公司 | Flow distribution system, device and method for multi-section arm support, and engineering machine equipment |
CN103807236B (en) * | 2014-01-22 | 2015-09-16 | 浙江大学 | Valve control unit loads mouth independently controls multi-cylinder assignment of traffic hydraulic system |
DK3020983T3 (en) | 2014-11-14 | 2020-08-10 | Danfoss Power Solutions Aps | Input module for a valve group |
DE102015201122A1 (en) * | 2014-12-19 | 2016-06-23 | Robert Bosch Gmbh | Circuit for controlling a rotating consumer |
WO2016111205A1 (en) * | 2015-01-06 | 2016-07-14 | 住友重機械工業株式会社 | Construction apparatus |
SE542525C2 (en) | 2015-10-19 | 2020-06-02 | Husqvarna Ab | Automatic tuning of valve for remote controlled demolition robot |
SE539241C2 (en) | 2015-10-19 | 2017-05-23 | Husqvarna Ab | Adaptive control of hydraulic tool on remote demolition robot |
SE542526C2 (en) | 2015-10-19 | 2020-06-02 | Husqvarna Ab | Energy buffer arrangement and method for remote controlled demolition robot |
KR102570491B1 (en) * | 2015-12-28 | 2023-08-23 | 스미토모 겐키 가부시키가이샤 | shovel |
EP3623534B1 (en) * | 2017-05-09 | 2022-04-06 | Hitachi Construction Machinery Co., Ltd. | Work machinery |
WO2019034317A1 (en) * | 2017-08-17 | 2019-02-21 | Sunfab Hydraulics Ab | Control device for a motor for a hydraulic system |
KR102587519B1 (en) * | 2018-03-30 | 2023-10-10 | 스미도모쥬기가이고교 가부시키가이샤 | Work machines, information processing devices |
CN108626205A (en) * | 2018-04-13 | 2018-10-09 | 安徽天水液压机床科技有限公司 | A kind of multi-machine parallel connection numerical-control hydraulic sheet metal tubulation molding machine hydraulic system |
JP7190933B2 (en) * | 2019-02-15 | 2022-12-16 | 日立建機株式会社 | construction machinery |
CN114506799B (en) * | 2022-04-20 | 2022-07-08 | 杭叉集团股份有限公司 | Forklift gantry joint action control method and control system |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4534707A (en) * | 1984-05-14 | 1985-08-13 | Caterpillar Tractor Co. | Hydrostatic vehicle control |
US4581893A (en) * | 1982-04-19 | 1986-04-15 | Unimation, Inc. | Manipulator apparatus with energy efficient control |
US4712376A (en) * | 1986-10-22 | 1987-12-15 | Caterpillar Inc. | Proportional valve control apparatus for fluid systems |
EP0410053A1 (en) * | 1989-07-26 | 1991-01-30 | Kabushiki Kaisha Kobe Seiko Sho | Method of controlling the slewing operation of a slewing mechanism and a hydraulic control system for carrying out the same |
US5074194A (en) * | 1988-03-03 | 1991-12-24 | Hitachi Construction Machinery Co., Ltd. | Hydraulic driving method of and hydraulic driving apparatus for hydraulic machine |
WO1993016285A1 (en) * | 1992-02-18 | 1993-08-19 | Hitachi Construction Machinery Co., Ltd. | Hydraulically driving system |
US5285715A (en) * | 1992-08-06 | 1994-02-15 | Hr Textron, Inc. | Electrohydraulic servovalve with flow gain compensation |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03255202A (en) * | 1990-03-05 | 1991-11-14 | Hitachi Constr Mach Co Ltd | Hydraulic drive control device |
JP3204977B2 (en) * | 1992-03-09 | 2001-09-04 | 日立建機株式会社 | Hydraulic drive |
-
1996
- 1996-10-08 WO PCT/JP1996/002926 patent/WO1997013929A1/en not_active Application Discontinuation
- 1996-10-08 CA CA002201626A patent/CA2201626A1/en not_active Abandoned
- 1996-10-08 CN CN96191191A patent/CN1166192A/en active Pending
- 1996-10-08 KR KR1019970703731A patent/KR100212771B1/en not_active IP Right Cessation
- 1996-10-08 EP EP96932847A patent/EP0796952A4/en not_active Withdrawn
- 1996-10-08 JP JP51067197A patent/JP3677296B2/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4581893A (en) * | 1982-04-19 | 1986-04-15 | Unimation, Inc. | Manipulator apparatus with energy efficient control |
US4534707A (en) * | 1984-05-14 | 1985-08-13 | Caterpillar Tractor Co. | Hydrostatic vehicle control |
US4712376A (en) * | 1986-10-22 | 1987-12-15 | Caterpillar Inc. | Proportional valve control apparatus for fluid systems |
US5074194A (en) * | 1988-03-03 | 1991-12-24 | Hitachi Construction Machinery Co., Ltd. | Hydraulic driving method of and hydraulic driving apparatus for hydraulic machine |
EP0410053A1 (en) * | 1989-07-26 | 1991-01-30 | Kabushiki Kaisha Kobe Seiko Sho | Method of controlling the slewing operation of a slewing mechanism and a hydraulic control system for carrying out the same |
WO1993016285A1 (en) * | 1992-02-18 | 1993-08-19 | Hitachi Construction Machinery Co., Ltd. | Hydraulically driving system |
US5535587A (en) * | 1992-02-18 | 1996-07-16 | Hitachi Construction Machinery Co., Ltd. | Hydraulic drive system |
US5285715A (en) * | 1992-08-06 | 1994-02-15 | Hr Textron, Inc. | Electrohydraulic servovalve with flow gain compensation |
Non-Patent Citations (1)
Title |
---|
See also references of WO9713929A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0796952A1 (en) | 1997-09-24 |
CA2201626A1 (en) | 1997-04-09 |
KR100212771B1 (en) | 1999-08-02 |
WO1997013929A1 (en) | 1997-04-17 |
CN1166192A (en) | 1997-11-26 |
KR980700495A (en) | 1998-03-30 |
JP3677296B2 (en) | 2005-07-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0796952A4 (en) | Control system for construction machine | |
CA2092998A1 (en) | Variable gain servo assist | |
CA2111736A1 (en) | Surface Control of Well Annulus Pressure | |
CA2253779A1 (en) | Hydraulic control valve system with split pressure compensator | |
JPS6487901A (en) | Fluid pressure control system | |
CA2038938A1 (en) | Control system for a road planer | |
NZ235494A (en) | Fluid flow controller uses plural individual flow control valves | |
MY110270A (en) | Braking systems | |
EP0593782A4 (en) | Hydraulic circuit device for construction machines. | |
ATE318181T1 (en) | CONTROL AND THROTTLE DEVICE COMBINATION FOR A SPRAY NOZZLE | |
EP0381328A3 (en) | Oil hydraulic circuit for hydraulic machine such as a shovel | |
EP0354659A3 (en) | Fuel injector with silicon nozzle | |
CA2214432A1 (en) | Valve control | |
CA2197260A1 (en) | Electro hydraulic downhole control device | |
CA2180062A1 (en) | Flow regulating valve | |
CA2290913A1 (en) | Tempered water mixing system | |
CA2276552A1 (en) | Fluid control device | |
DK0632203T3 (en) | Electropneumatic converter with solenoid valve control | |
EP0537369A4 (en) | ||
JPH07107402B2 (en) | Control device for at least two hydraulic pressure consumption devices to which hydraulic pressure is supplied from at least one pump | |
EP0411151A4 (en) | Hydraulic circuit for working machines | |
PL322885A1 (en) | Flow control ports for controlling inflow into a thermostatic mixing valve | |
BR9802222A (en) | Media distributor | |
EP0607903A3 (en) | Flow control valve with pilot operation and pressure compensation. | |
SE8803181D0 (en) | HYDRAULIC DRIVING SYSTEM WITH A PRIORITY FUNCTION FOR HYDRAULIC MOTORS |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19970703 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE DE FR GB IT |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19991206 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): BE DE FR GB IT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20000209 |