GB1310402A - Electrohydraulic positioning drives - Google Patents

Electrohydraulic positioning drives

Info

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
Application number
GB3096970A
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.)
Vereinigte Flugtechnische Werke Fokker GmbH
Original Assignee
Vereinigte Flugtechnische Werke Fokker GmbH
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
Priority claimed from DE19691932066 external-priority patent/DE1932066C3/en
Application filed by Vereinigte Flugtechnische Werke Fokker GmbH filed Critical Vereinigte Flugtechnische Werke Fokker GmbH
Publication of GB1310402A publication Critical patent/GB1310402A/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
    • F15B18/00—Parallel arrangements of independent servomotor systems

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.
GB3096970A 1969-06-25 1970-06-25 Electrohydraulic positioning drives Expired GB1310402A (en)

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)

* Cited by examiner, † Cited by third party
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
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
US3915427A (en) * 1973-08-24 1975-10-28 Ltv Aerospace Corp Fluid control 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
CN104895745A (en) 2009-05-22 2015-09-09 通用压缩股份有限公司 Compressor and/or expander device
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
CN102822552A (en) * 2009-12-24 2012-12-12 通用压缩股份有限公司 System and methods for optimizing efficiency of a hydraulically actuated system
US8567303B2 (en) 2010-12-07 2013-10-29 General Compression, Inc. Compressor and/or expander device with rolling piston seal
WO2012096938A2 (en) 2011-01-10 2012-07-19 General Compression, Inc. Compressor and/or expander device
WO2012097215A1 (en) 2011-01-13 2012-07-19 General Compression, Inc. Systems, methods and devices for the management of heat removal within a compression and/or expansion device or system
AU2012205442B2 (en) 2011-01-14 2015-07-16 General Compression, Inc. Compressed gas storage and recovery system and method of operation systems
US8387375B2 (en) 2011-11-11 2013-03-05 General Compression, Inc. Systems and methods for optimizing thermal efficiency of a compressed air energy storage system
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

Also Published As

Publication number Publication date
DE1932066A1 (en) 1971-01-21
US3618470A (en) 1971-11-09
DE1932066B2 (en) 1976-07-22
FR2051290A5 (en) 1971-04-02

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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