CA963328A - Closed center valve control system - Google Patents

Closed center valve control system

Info

Publication number
CA963328A
CA963328A CA154,096A CA154096A CA963328A CA 963328 A CA963328 A CA 963328A CA 154096 A CA154096 A CA 154096A CA 963328 A CA963328 A CA 963328A
Authority
CA
Canada
Prior art keywords
control system
valve control
center valve
closed center
closed
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.)
Expired
Application number
CA154,096A
Other languages
English (en)
Other versions
CA154096S (en
Inventor
Joseph J. Andersen
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.)
Chandler Evans Inc
Original Assignee
Chandler Evans 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 Chandler Evans Inc filed Critical Chandler Evans Inc
Application granted granted Critical
Publication of CA963328A publication Critical patent/CA963328A/en
Expired 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
    • F15B9/02—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
    • 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
    • F15B9/03—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 with electrical control means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/924—Coupled nut and bolt
    • Y10S411/926—Positive lock

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Servomotors (AREA)
  • Control Of Position Or Direction (AREA)
  • Feedback Control In General (AREA)
  • Fluid-Pressure Circuits (AREA)
CA154,096A 1972-01-28 1972-10-17 Closed center valve control system Expired CA963328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22165272A 1972-01-28 1972-01-28

Publications (1)

Publication Number Publication Date
CA963328A true CA963328A (en) 1975-02-25

Family

ID=22828726

Family Applications (1)

Application Number Title Priority Date Filing Date
CA154,096A Expired CA963328A (en) 1972-01-28 1972-10-17 Closed center valve control system

Country Status (5)

Country Link
US (1) US3763745A (xx)
JP (1) JPS5623041B2 (xx)
CA (1) CA963328A (xx)
DE (1) DE2256451A1 (xx)
GB (1) GB1405916A (xx)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121498A (en) * 1977-02-03 1978-10-24 Moog Inc. Pivotal positioning servoactuator
US4450753A (en) * 1980-05-12 1984-05-29 Ford Motor Company Electro-hydraulic proportional actuator
DE3171134D1 (en) * 1980-10-27 1985-08-01 Bendix Corp Control system for an electrohydraulic actuator
JPS57141206U (xx) * 1981-03-02 1982-09-04
US4422474A (en) * 1981-09-14 1983-12-27 Ford Motor Company Electro-hydraulic remote valve
DE3140301A1 (de) * 1981-10-10 1983-04-28 Bosch und Pierburg System oHG, 4040 Neuss Regelvorrichtung fuer ein druckgesteuertes stellglied
ZA828579B (en) * 1981-12-09 1983-09-28 Sperry Corp Pulse width modulated control circuit for double solenoid valve
US4466337A (en) * 1982-01-25 1984-08-21 Sundstrand Corporation Electro hydraulic control with dead zone compensation
DE3225157A1 (de) * 1982-07-06 1984-01-12 Robert Bosch Gmbh, 7000 Stuttgart Regelvorrichtung fuer ein elektrisches stellglied
DE3312108A1 (de) * 1982-09-10 1984-10-04 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur elektronischen steuerung der stellung eines stellglieds
US4730541A (en) * 1986-06-03 1988-03-15 Technical Manufacturing Corporation Non contacting electro-pneumatic servo for vibration isolation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3266378A (en) * 1964-06-16 1966-08-16 Jared W Shaw Variable gain solenoid valve control system
US3521535A (en) * 1967-11-07 1970-07-21 Chandler Evans Inc Time modulated pneumatically actuated position control mechanism
US3561326A (en) * 1968-03-06 1971-02-09 Parker Hannifin Corp Pulse phase modulated servoactuator
US3664234A (en) * 1970-04-27 1972-05-23 Sperry Rand Corp Digital electrohydraulic servo actuator

Also Published As

Publication number Publication date
DE2256451A1 (de) 1973-08-30
GB1405916A (en) 1975-09-10
US3763745A (en) 1973-10-09
JPS4885996A (xx) 1973-11-14
JPS5623041B2 (xx) 1981-05-28

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