WO2012166224A3 - Hydraulic control system having cylinder stall strategy - Google Patents

Hydraulic control system having cylinder stall strategy Download PDF

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Publication number
WO2012166224A3
WO2012166224A3 PCT/US2012/026844 US2012026844W WO2012166224A3 WO 2012166224 A3 WO2012166224 A3 WO 2012166224A3 US 2012026844 W US2012026844 W US 2012026844W WO 2012166224 A3 WO2012166224 A3 WO 2012166224A3
Authority
WO
WIPO (PCT)
Prior art keywords
control system
hydraulic control
flow rate
fluid actuator
hydraulic circuit
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.)
Ceased
Application number
PCT/US2012/026844
Other languages
French (fr)
Other versions
WO2012166224A2 (en
Inventor
Grant Peterson
Randall Anderson
Rustu Cesur
Jason BRINKMAN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
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 Caterpillar Inc filed Critical Caterpillar Inc
Priority to JP2013556787A priority Critical patent/JP5986114B2/en
Priority to CN201280010777.5A priority patent/CN103403362B/en
Priority to EP12793274.7A priority patent/EP2681458A2/en
Publication of WO2012166224A2 publication Critical patent/WO2012166224A2/en
Publication of WO2012166224A3 publication Critical patent/WO2012166224A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • 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
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • 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
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • 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
    • 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
    • F15B2211/20523—Internal combustion engine
    • 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
    • F15B2211/30—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
    • F15B2211/60—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
    • F15B2211/6336—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
    • F15B2211/63—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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

A hydraulic control system (48) for a machine (10) is disclosed. The hydraulic control system may have a hydraulic circuit (50), a pump (52) configured to supply pressurized fluid, and a first sensor (105) configured to generate a first signal indicative of a pressure of the hydraulic circuit. The hydraulic circuit may also have a first fluid actuator (20) fluidly connected to receive pressurized fluid from the hydraulic circuit, a second sensor (103) configured to generate a second signal indicative of a velocity of the first fluid actuator, and a controller (58) in communication with the first and second sensors. The controller may be configured to receive an input indicative of a desired flow rate for the first fluid actuator, to determine an actual flow rate of the first fluid actuator based on the second signal, and to determine a stall condition of the first fluid actuator based on the desired flow rate, the actual flow rate, and the first signal.
PCT/US2012/026844 2011-02-28 2012-02-28 Hydraulic control system having cylinder stall strategy Ceased WO2012166224A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2013556787A JP5986114B2 (en) 2011-02-28 2012-02-28 Hydraulic control system with cylinder stagnation strategy
CN201280010777.5A CN103403362B (en) 2011-02-28 2012-02-28 There is the hydraulic control system of cylinder stall strategy
EP12793274.7A EP2681458A2 (en) 2011-02-28 2012-02-28 Hydraulic control system having cylinder stall strategy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/036,421 2011-02-28
US13/036,421 US8726647B2 (en) 2011-02-28 2011-02-28 Hydraulic control system having cylinder stall strategy

Publications (2)

Publication Number Publication Date
WO2012166224A2 WO2012166224A2 (en) 2012-12-06
WO2012166224A3 true WO2012166224A3 (en) 2013-01-24

Family

ID=46718061

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/026844 Ceased WO2012166224A2 (en) 2011-02-28 2012-02-28 Hydraulic control system having cylinder stall strategy

Country Status (5)

Country Link
US (1) US8726647B2 (en)
EP (1) EP2681458A2 (en)
JP (1) JP5986114B2 (en)
CN (1) CN103403362B (en)
WO (1) WO2012166224A2 (en)

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JP4953325B2 (en) * 2009-03-12 2012-06-13 キャタピラー エス エー アール エル Work machine
US8886415B2 (en) * 2011-06-16 2014-11-11 Caterpillar Inc. System implementing parallel lift for range of angles
US9328744B2 (en) * 2012-08-31 2016-05-03 Caterpillar Inc. Hydraulic control system having swing energy recovery
JP5969379B2 (en) * 2012-12-21 2016-08-17 住友建機株式会社 Excavator and excavator control method
US9765499B2 (en) 2014-10-22 2017-09-19 Caterpillar Inc. Boom assist management feature
US10494790B2 (en) * 2015-04-29 2019-12-03 Clark Equipment Company Ride control system for power machine
US9850639B2 (en) 2015-07-02 2017-12-26 Caterpillar Inc. Excavation system having velocity based work tool shake
US9938688B2 (en) 2015-07-02 2018-04-10 Caterpillar Inc. Excavation system providing impact detection
US9903100B2 (en) 2015-07-02 2018-02-27 Caterpillar Inc. Excavation system providing automated tool linkage calibration
US9587369B2 (en) 2015-07-02 2017-03-07 Caterpillar Inc. Excavation system having adaptive dig control
US9598837B2 (en) 2015-07-02 2017-03-21 Caterpillar Inc. Excavation system providing automated stall correction
US9732502B2 (en) 2015-07-02 2017-08-15 Caterpillar Inc. Excavation system providing impact detection
JP6456277B2 (en) * 2015-12-18 2019-01-23 日立建機株式会社 Construction machinery
US10954935B2 (en) * 2016-04-19 2021-03-23 ClearMotion, Inc. Active hydraulic ripple cancellation methods and systems
US10801177B2 (en) * 2017-01-23 2020-10-13 Built Robotics Inc. Excavating earth from a dig site using an excavation vehicle
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US10648154B2 (en) * 2018-02-28 2020-05-12 Deere & Company Method of limiting flow in response to sensed pressure
US10913435B2 (en) 2018-09-28 2021-02-09 Goodrich Corporation Hydraulic braking system and method

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Also Published As

Publication number Publication date
CN103403362A (en) 2013-11-20
US8726647B2 (en) 2014-05-20
WO2012166224A2 (en) 2012-12-06
JP2014508254A (en) 2014-04-03
US20120216517A1 (en) 2012-08-30
CN103403362B (en) 2016-01-13
JP5986114B2 (en) 2016-09-06
EP2681458A2 (en) 2014-01-08

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