EP0899464A3 - Hydraulic servomotor control assembly - Google Patents

Hydraulic servomotor control assembly Download PDF

Info

Publication number
EP0899464A3
EP0899464A3 EP98116235A EP98116235A EP0899464A3 EP 0899464 A3 EP0899464 A3 EP 0899464A3 EP 98116235 A EP98116235 A EP 98116235A EP 98116235 A EP98116235 A EP 98116235A EP 0899464 A3 EP0899464 A3 EP 0899464A3
Authority
EP
European Patent Office
Prior art keywords
hydraulic
control assembly
servomotor control
hydraulic motor
hydraulic servomotor
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Withdrawn
Application number
EP98116235A
Other languages
German (de)
French (fr)
Other versions
EP0899464A2 (en
Inventor
Satoshi c/o Takasago Res. & Devel. Center Tawara
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Publication of EP0899464A2 publication Critical patent/EP0899464A2/en
Publication of EP0899464A3 publication Critical patent/EP0899464A3/en
Withdrawn legal-status Critical Current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
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • F15B9/14—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member with rotary servomotors
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT

Abstract

A hydraulic servomotor control assembly is disclosed, for example a hydraulic servomotor control assembly which supplies the pressurized oil as operating fluid to a hydraulic motor 1, and which controls the volume of the pressurized fluid by means of a servo valve 2. In hydraulic servomotors of the prior art, the hydraulic motor and the tachogenerator or rotational speed sensor device for detecting the rotation, are two separate entities, so that the servomotor must be quite large, and it is difficult to find ways to make it any smaller. In contrast to such prior art, the hydraulic servomotor control assembly according to this invention is distinguished by the fact that a hydraulic motor 1 and a rotational speed detector device (13, 17, 20) are shaft coupled and integral with each other, so that the resulting assembly is both compact and stable.
EP98116235A 1997-09-01 1998-08-27 Hydraulic servomotor control assembly Withdrawn EP0899464A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP25126797A JPH1182417A (en) 1997-09-01 1997-09-01 Fluid servo motor device
JP25126797 1997-09-01
JP251267/97 1997-09-01

Publications (2)

Publication Number Publication Date
EP0899464A2 EP0899464A2 (en) 1999-03-03
EP0899464A3 true EP0899464A3 (en) 2000-06-28

Family

ID=17220254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98116235A Withdrawn EP0899464A3 (en) 1997-09-01 1998-08-27 Hydraulic servomotor control assembly

Country Status (3)

Country Link
EP (1) EP0899464A3 (en)
JP (1) JPH1182417A (en)
CA (1) CA2246210A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI829495B (en) * 2023-01-05 2024-01-11 陳高松 Improved pneumatic drive structure

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258834A (en) * 1978-07-12 1981-03-31 Western Gear Corporation Winding system for flexible conduits and cables
US4527054A (en) * 1982-06-10 1985-07-02 White Harvey C Optical fiber sensing device for hydraulic motors
US4593555A (en) * 1983-12-16 1986-06-10 Gary W. Krutz Speed and torque sensor for hydraulic motor
US4611549A (en) * 1983-03-30 1986-09-16 Niigata Engineering Co., Ltd. Rotation control system for Z-type propulsion apparatus
US4644749A (en) * 1983-03-21 1987-02-24 Sperry Corporation Phase locked looped controller for motordrivers
EP0417283A1 (en) * 1988-05-31 1991-03-20 Kabushiki Kaisha Komatsu Seisakusho Mechanical-hydraulic transmission gear and method of controlling same
EP0426443A2 (en) * 1989-10-31 1991-05-08 Shimadzu Corporation Engine-brake controller for vehicle with stepless speed-changer
US5018351A (en) * 1987-12-16 1991-05-28 Gerhard Klemm Maschinenfabrik Gmbh & Co. Hydromechanical drive
JPH0524445A (en) * 1991-07-19 1993-02-02 Komatsu Forklift Co Ltd Hydraulic circuit for industrial vehicle
US5598794A (en) * 1995-02-13 1997-02-04 Fluid Power Industries, Inc. High accuracy automatically controlled variable linear seed spacing planting apparatus
EP0791771A1 (en) * 1994-11-09 1997-08-27 Komatsu Ltd. Method of controlling speed change of hydraulic drive device for vehicle and speed change device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258834A (en) * 1978-07-12 1981-03-31 Western Gear Corporation Winding system for flexible conduits and cables
US4527054A (en) * 1982-06-10 1985-07-02 White Harvey C Optical fiber sensing device for hydraulic motors
US4644749A (en) * 1983-03-21 1987-02-24 Sperry Corporation Phase locked looped controller for motordrivers
US4611549A (en) * 1983-03-30 1986-09-16 Niigata Engineering Co., Ltd. Rotation control system for Z-type propulsion apparatus
US4593555A (en) * 1983-12-16 1986-06-10 Gary W. Krutz Speed and torque sensor for hydraulic motor
US5018351A (en) * 1987-12-16 1991-05-28 Gerhard Klemm Maschinenfabrik Gmbh & Co. Hydromechanical drive
EP0417283A1 (en) * 1988-05-31 1991-03-20 Kabushiki Kaisha Komatsu Seisakusho Mechanical-hydraulic transmission gear and method of controlling same
EP0426443A2 (en) * 1989-10-31 1991-05-08 Shimadzu Corporation Engine-brake controller for vehicle with stepless speed-changer
JPH0524445A (en) * 1991-07-19 1993-02-02 Komatsu Forklift Co Ltd Hydraulic circuit for industrial vehicle
EP0791771A1 (en) * 1994-11-09 1997-08-27 Komatsu Ltd. Method of controlling speed change of hydraulic drive device for vehicle and speed change device
US5598794A (en) * 1995-02-13 1997-02-04 Fluid Power Industries, Inc. High accuracy automatically controlled variable linear seed spacing planting apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 304 (M - 1427) 10 June 1993 (1993-06-10) *

Also Published As

Publication number Publication date
EP0899464A2 (en) 1999-03-03
JPH1182417A (en) 1999-03-26
CA2246210A1 (en) 1999-03-01

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