CA963328A - Closed center valve control system - Google Patents
Closed center valve control systemInfo
- 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
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)
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)
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)
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 |
-
1972
- 1972-01-28 US US00221652A patent/US3763745A/en not_active Expired - Lifetime
- 1972-10-17 CA CA154,096A patent/CA963328A/en not_active Expired
- 1972-11-06 GB GB5109272A patent/GB1405916A/en not_active Expired
- 1972-11-17 DE DE2256451A patent/DE2256451A1/de active Pending
- 1972-12-14 JP JP12575372A patent/JPS5623041B2/ja not_active Expired
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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