ATE148773T1 - METHOD AND ARRANGEMENT FOR CONTROLLING A DEVICE OPERATED BY PRESSURE MEDIUM - Google Patents

METHOD AND ARRANGEMENT FOR CONTROLLING A DEVICE OPERATED BY PRESSURE MEDIUM

Info

Publication number
ATE148773T1
ATE148773T1 AT92905591T AT92905591T ATE148773T1 AT E148773 T1 ATE148773 T1 AT E148773T1 AT 92905591 T AT92905591 T AT 92905591T AT 92905591 T AT92905591 T AT 92905591T AT E148773 T1 ATE148773 T1 AT E148773T1
Authority
AT
Austria
Prior art keywords
control unit
motion
control
arrangement
controlling
Prior art date
Application number
AT92905591T
Other languages
German (de)
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
Application granted granted Critical
Publication of ATE148773T1 publication Critical patent/ATE148773T1/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)
  • Mechanically-Actuated Valves (AREA)
  • Multiple-Way 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.
AT92905591T 1991-06-17 1992-02-21 METHOD AND ARRANGEMENT FOR CONTROLLING A DEVICE OPERATED BY PRESSURE MEDIUM ATE148773T1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ATE148773T1 true ATE148773T1 (en) 1997-02-15

Family

ID=8532730

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92905591T ATE148773T1 (en) 1991-06-17 1992-02-21 METHOD AND ARRANGEMENT FOR CONTROLLING A DEVICE OPERATED BY PRESSURE MEDIUM

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
FI912942A7 (en) 1992-12-18
EP0589887B1 (en) 1997-02-05
DE69217366D1 (en) 1997-03-20
EP0589887A1 (en) 1994-04-06
DE69217366T2 (en) 1997-08-28
FI91554B (en) 1994-03-31
FI91554C (en) 1994-07-11
WO1992022749A1 (en) 1992-12-23
FI912942A0 (en) 1991-06-17

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties