FI91554C - Method and apparatus for controlling a pressure medium actuator - Google Patents

Method and apparatus for controlling a pressure medium actuator

Info

Publication number
FI91554C
FI91554C FI912942A FI912942A FI91554C FI 91554 C FI91554 C FI 91554C FI 912942 A FI912942 A FI 912942A FI 912942 A FI912942 A FI 912942A FI 91554 C FI91554 C FI 91554C
Authority
FI
Finland
Prior art keywords
control unit
motion
control
controlling
pressure fluid
Prior art date
Application number
FI912942A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI91554B (en
FI912942A0 (en
FI912942A (en
Inventor
Pentti Rita
Original Assignee
Mekarita Ky
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 Mekarita Ky filed Critical Mekarita Ky
Priority to FI912942A priority Critical patent/FI91554C/en
Publication of FI912942A0 publication Critical patent/FI912942A0/en
Priority to DE69217366T priority patent/DE69217366T2/en
Priority to AT92905591T priority patent/ATE148773T1/en
Priority to PCT/FI1992/000049 priority patent/WO1992022749A1/en
Priority to EP92905591A priority patent/EP0589887B1/en
Publication of FI912942A publication Critical patent/FI912942A/en
Publication of FI91554B publication Critical patent/FI91554B/en
Application granted granted Critical
Publication of FI91554C publication Critical patent/FI91554C/en

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
    • F15B9/02—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 servomotors of the reciprocatable or oscillatable type
    • F15B9/08—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 servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor
    • F15B9/12—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 servomotors of the reciprocatable or oscillatable type controlled by valves affecting the fluid feed or the fluid outlet of the servomotor in which both the controlling element and the servomotor control the same member influencing a fluid passage and are connected to that member by means of a differential gearing

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Transmission Device (AREA)
  • Multiple-Way Valves (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

The invention relates to a method and arrangement for controlling a pressure fluid operated apparatus (22) by means of a control unit (1) and valve system (7). The motions of the control elements (3, 5) of the control unit (1) manipulate the valve devices (7a, 7b) of the valve system (7), so that pressure fluid can flow and affect the apparatus (22) by moving its outlet (22a). The motion (D; B', C') of the outlet (22a) of the apparatus (22) is coupled back to the control unit (1) so that the back-coupled motion eliminates the motion (B, C) of the control members (3, 5) of the control unit (1). As a consequence, the motion of the control elements (3, 5) is essentially stopped, and pressure fluid can flow, during the operation of the control unit (1), to the apparatus (22) and affect the device with its pressure. The stopping of the control unit (1) causes the back-coupled motion of the apparatus to shift the control members (3, 5), and consequently their control over the valve devices (7a, 7b) of the valve system (7) ends, and the apparatus (22) stops.
FI912942A 1991-06-17 1991-06-17 Method and apparatus for controlling a pressure medium actuator FI91554C (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI912942A FI91554C (en) 1991-06-17 1991-06-17 Method and apparatus for controlling a pressure medium actuator
DE69217366T DE69217366T2 (en) 1991-06-17 1992-02-21 METHOD AND ARRANGEMENT FOR CONTROLLING A PRESSURE-OPERATING DEVICE
AT92905591T ATE148773T1 (en) 1991-06-17 1992-02-21 METHOD AND ARRANGEMENT FOR CONTROLLING A DEVICE OPERATED BY PRESSURE MEDIUM
PCT/FI1992/000049 WO1992022749A1 (en) 1991-06-17 1992-02-21 Method and arrangement for controlling a pressure fluid operated apparatus
EP92905591A EP0589887B1 (en) 1991-06-17 1992-02-21 Method and arrangement for controlling a pressure fluid operated apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI912942A FI91554C (en) 1991-06-17 1991-06-17 Method and apparatus for controlling a pressure medium actuator
FI912942 1991-06-17

Publications (4)

Publication Number Publication Date
FI912942A0 FI912942A0 (en) 1991-06-17
FI912942A FI912942A (en) 1992-12-18
FI91554B FI91554B (en) 1994-03-31
FI91554C true FI91554C (en) 1994-07-11

Family

ID=8532730

Family Applications (1)

Application Number Title Priority Date Filing Date
FI912942A FI91554C (en) 1991-06-17 1991-06-17 Method and apparatus for controlling a pressure medium actuator

Country Status (5)

Country Link
EP (1) EP0589887B1 (en)
AT (1) ATE148773T1 (en)
DE (1) DE69217366T2 (en)
FI (1) FI91554C (en)
WO (1) WO1992022749A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2049272A5 (en) * 1969-06-05 1971-03-26 Cloup Jean
US4362018A (en) * 1980-06-12 1982-12-07 Kobe Steel, Ltd. Hydraulic rotation control circuit

Also Published As

Publication number Publication date
WO1992022749A1 (en) 1992-12-23
FI91554B (en) 1994-03-31
ATE148773T1 (en) 1997-02-15
DE69217366T2 (en) 1997-08-28
EP0589887A1 (en) 1994-04-06
FI912942A0 (en) 1991-06-17
FI912942A (en) 1992-12-18
DE69217366D1 (en) 1997-03-20
EP0589887B1 (en) 1997-02-05

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Legal Events

Date Code Title Description
GB Transfer or assigment of application

Owner name: MEKARITA KY

BB Publication of examined application
MM Patent lapsed