GB1310402A - Electrohydraulic positioning drives - Google Patents
Electrohydraulic positioning drivesInfo
- Publication number
- GB1310402A GB1310402A GB3096970A GB3096970A GB1310402A GB 1310402 A GB1310402 A GB 1310402A GB 3096970 A GB3096970 A GB 3096970A GB 3096970 A GB3096970 A GB 3096970A GB 1310402 A GB1310402 A GB 1310402A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- cylinders
- potentiometer
- pistons
- pressure
- 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
- 239000012530 fluid Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
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
- F15B18/00—Parallel arrangements of independent servomotor systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Servomotors (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
1310402 Fluid pressure servomotor systems VEREINIGTE FLUGTECHNISCHE WERKE-FOKKER GmbH 25 June 1970 [25 June 1969] 30969/70 Heading G3P A control system has the pistons 1a, 2a of two cylinders 1, 2 secured together by a crossbeam 5 and controlled by servo valves 3a, 3b which are connected to a hydraulic supply via a shut-off valve 13 and are controlled by an electrical comparator circuit 4. Each piston is connected to a potentiometer 6, 7 which feeds a signal representative of the piston position to the comparator which signal is compared with the input. The two cylinders are inter-connected via restrictors 9 and an auxiliary cylinder 8 in which a piston 8a moves in response to a pressure difference in the two cylinders to adjust the potentiometer 6 so as to cause the pressure difference to be eliminated. In the event of a large pressure difference a switch 11 is actuated to operate the valve 13 to disconnect the servo valves from the supply. In modifications the piston 8a is connected to a separate potentiometer the pistons 1a, 2a are mounted on a common piston rod and the potentiometer actuated by the piston 8a is replaced by a pressure-measuring transducer. The system shown may be duplicated with the rods of the two pairs of pistons 1a, 2a inter-connected by a beam and a third auxiliary chamber 8 and associated piston and potentiometer is then provided to equalise the pressure in the cylinders 1, 2 between the pairs of cylinders.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691932066 DE1932066C3 (en) | 1969-06-25 | Arrangement for the monitoring and adjustment of several electrohydraulic actuators acting on a common output |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1310402A true GB1310402A (en) | 1973-03-21 |
Family
ID=5737895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3096970A Expired GB1310402A (en) | 1969-06-25 | 1970-06-25 | Electrohydraulic positioning drives |
Country Status (3)
Country | Link |
---|---|
US (1) | US3618470A (en) |
FR (1) | FR2051290A5 (en) |
GB (1) | GB1310402A (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3757645A (en) * | 1970-06-01 | 1973-09-11 | Hurco Mfg Co Inc | Automatic shearing method and apparatus |
DE2029287C3 (en) * | 1970-06-13 | 1978-07-13 | Vereinigte Flugtechnische Werke- Fokker Gmbh, 2800 Bremen | Arrangement for monitoring and adapting several electrohydraulic actuators acting on a common output |
US3772884A (en) * | 1972-07-27 | 1973-11-20 | Woodward Governor Co | Load equalizing control for multiple unit power plants |
US3965798A (en) * | 1973-07-02 | 1976-06-29 | Raytheon Company | Adaptive actuator system |
US3915427A (en) * | 1973-08-24 | 1975-10-28 | Ltv Aerospace Corp | Fluid control system |
US3901128A (en) * | 1973-08-24 | 1975-08-26 | Ltv Aerospace Corp | Fluid powered control system and fail-safe valving system for a fluid powered system |
US4398242A (en) * | 1980-02-25 | 1983-08-09 | The Boeing Company | Electronic controller |
US4527954A (en) * | 1983-01-14 | 1985-07-09 | Halliburton Company | Pumping apparatus |
AT396905B (en) * | 1990-03-02 | 1993-12-27 | Leinweber Maschinen Gmbh | HYDRAULIC PRESS FOR PRODUCING SHAPED BODIES |
US8454321B2 (en) | 2009-05-22 | 2013-06-04 | General Compression, Inc. | Methods and devices for optimizing heat transfer within a compression and/or expansion device |
CA2762980A1 (en) | 2009-05-22 | 2010-11-25 | General Compression Inc. | Compressor and/or expander device |
AU2010336383B2 (en) * | 2009-12-24 | 2015-05-28 | General Compression Inc. | Methods and devices for optimizing heat transfer within a compression and/or expansion device |
US8567303B2 (en) | 2010-12-07 | 2013-10-29 | General Compression, Inc. | Compressor and/or expander device with rolling piston seal |
US8997475B2 (en) | 2011-01-10 | 2015-04-07 | General Compression, Inc. | Compressor and expander device with pressure vessel divider baffle and piston |
US8572959B2 (en) | 2011-01-13 | 2013-11-05 | General Compression, Inc. | Systems, methods and devices for the management of heat removal within a compression and/or expansion device or system |
EP2663758A1 (en) | 2011-01-14 | 2013-11-20 | General Compression Inc. | Compressed gas storage and recovery system and method of operation systems |
US8522538B2 (en) | 2011-11-11 | 2013-09-03 | General Compression, Inc. | Systems and methods for compressing and/or expanding a gas utilizing a bi-directional piston and hydraulic actuator |
US8272212B2 (en) | 2011-11-11 | 2012-09-25 | General Compression, Inc. | Systems and methods for optimizing thermal efficiencey of a compressed air energy storage system |
-
1970
- 1970-06-10 US US45155A patent/US3618470A/en not_active Expired - Lifetime
- 1970-06-25 FR FR7023518A patent/FR2051290A5/fr not_active Expired
- 1970-06-25 GB GB3096970A patent/GB1310402A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2051290A5 (en) | 1971-04-02 |
DE1932066A1 (en) | 1971-01-21 |
US3618470A (en) | 1971-11-09 |
DE1932066B2 (en) | 1976-07-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |