SE7714476L - DEVICE FOR CONTROLING A RIVER SYSTEM - Google Patents

DEVICE FOR CONTROLING A RIVER SYSTEM

Info

Publication number
SE7714476L
SE7714476L SE7714476A SE7714476A SE7714476L SE 7714476 L SE7714476 L SE 7714476L SE 7714476 A SE7714476 A SE 7714476A SE 7714476 A SE7714476 A SE 7714476A SE 7714476 L SE7714476 L SE 7714476L
Authority
SE
Sweden
Prior art keywords
controling
river system
river
Prior art date
Application number
SE7714476A
Other languages
Swedish (sv)
Other versions
SE409602B (en
Inventor
U Ekholm
J Gustavsson
H Nevestveit
Original Assignee
Stal Laval Turbin Ab
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 Stal Laval Turbin Ab filed Critical Stal Laval Turbin Ab
Priority to SE7714476A priority Critical patent/SE409602B/en
Priority to JP15361578A priority patent/JPS5490475A/en
Publication of SE7714476L publication Critical patent/SE7714476L/en
Publication of SE409602B publication Critical patent/SE409602B/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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/12—Fluid oscillators or pulse generators
    • 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
    • F15B9/09—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 with electrical control means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/26—Automatic controllers electric in which the output signal is a pulse-train
    • G05B11/28—Automatic controllers electric in which the output signal is a pulse-train using pulse-height modulation; using pulse-width modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Flow Control (AREA)
SE7714476A 1977-12-20 1977-12-20 FLOW CONTROL DEVICE BETWEEN A SENSOR AND A RECEIVER SE409602B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE7714476A SE409602B (en) 1977-12-20 1977-12-20 FLOW CONTROL DEVICE BETWEEN A SENSOR AND A RECEIVER
JP15361578A JPS5490475A (en) 1977-12-20 1978-12-12 Control device for flow system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7714476A SE409602B (en) 1977-12-20 1977-12-20 FLOW CONTROL DEVICE BETWEEN A SENSOR AND A RECEIVER

Publications (2)

Publication Number Publication Date
SE7714476L true SE7714476L (en) 1979-06-21
SE409602B SE409602B (en) 1979-08-27

Family

ID=20333256

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7714476A SE409602B (en) 1977-12-20 1977-12-20 FLOW CONTROL DEVICE BETWEEN A SENSOR AND A RECEIVER

Country Status (2)

Country Link
JP (1) JPS5490475A (en)
SE (1) SE409602B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4813339A (en) * 1984-11-09 1989-03-21 Hitachi, Ltd. Pulse-width-modulation control of parallel three-way valves to supply single-acting quick-response actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4813339A (en) * 1984-11-09 1989-03-21 Hitachi, Ltd. Pulse-width-modulation control of parallel three-way valves to supply single-acting quick-response actuator

Also Published As

Publication number Publication date
SE409602B (en) 1979-08-27
JPS5490475A (en) 1979-07-18

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