GB1343681A - Hydraulic boost actuators - Google Patents

Hydraulic boost actuators

Info

Publication number
GB1343681A
GB1343681A GB1131371*[A GB1131371A GB1343681A GB 1343681 A GB1343681 A GB 1343681A GB 1131371 A GB1131371 A GB 1131371A GB 1343681 A GB1343681 A GB 1343681A
Authority
GB
United Kingdom
Prior art keywords
arm
ram
motor
brake
shuttle
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
GB1131371*[A
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.)
Sperry Corp
Original Assignee
Sperry Rand Corp
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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB1343681A publication Critical patent/GB1343681A/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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram
    • 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/40—Open loop systems, e.g. using stepping motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Control Devices (AREA)
  • Control Of Stepping Motors (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1343681 Hydraulic rams SPERRY RAND CORP 26 April 1971 [27 April 1970] 11313/71 Headings F1P F1D A hydraulic stepping ram 27 is controlled by a shuttle valve 16 in a body 14 integral with the ram 27 and the valve 16 is mechanically connected at 15 to the output arm 17 of an adjustable electric rotary stepping motor 12 and gear train 13; the motor 12 effecting a step in response to an electronic command signal of adjustable duration. Motor 12 and gear train 13 are rigid with a control arm 18 which is pivoted at 24 to the body 14 and has a slot 20 by which arm 18 makes a lost motion connection with a pin 21<SP>1</SP> carried by an arm 21 rigid with body 14. Arms 18, 21 may be held against relative movement by a brake 23 and arm 18 may be moved manually by a pilots control stick 19 pivoted thereto. In operation and with brake 23 on, a step of motor 12 moves shuttle 16 say to the right which results in ram 27 and body 14 moving to the right until body 14 and shuttle 16 assume their previous relative positions shown. Control stick 19 follows the ram to the right and if it is desired to operate , the ram manually brake 23 is released and on pushing stick 19, arm 18 together with 12, 13, 17, pivots at 24 and effects movement of shuttle 16 limited by the slot 20 and consequent movement of the ram. With the brake released and a rightward commanded step made by motor 12 then either valve 16 moves within body 14 or units 12, 13, 18 pivots clockwise at 24 causing control arm 19 to move rearwardly which latter is undesirable. Consequently the arm 19 is sprung-loaded to resist such motion. The command pulses for motor 12 are generated as described in Specification co-pending.
GB1131371*[A 1970-04-27 1971-04-26 Hydraulic boost actuators Expired GB1343681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3190570A 1970-04-27 1970-04-27

Publications (1)

Publication Number Publication Date
GB1343681A true GB1343681A (en) 1974-01-16

Family

ID=21862045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1131371*[A Expired GB1343681A (en) 1970-04-27 1971-04-26 Hydraulic boost actuators

Country Status (5)

Country Link
US (1) US3664234A (en)
CA (1) CA948294A (en)
DE (1) DE2120661A1 (en)
FR (1) FR2086381A1 (en)
GB (1) GB1343681A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140871A (en) * 1983-06-03 1984-12-05 Bowthorpe Hellermann Ltd Piston and cylinder actuator control

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763745A (en) * 1972-01-28 1973-10-09 Chandler Evans Inc Closed center valve control system
US3768373A (en) * 1972-08-28 1973-10-30 Chandler Evans Inc Linearized pressure gain module
US4235156A (en) * 1978-11-16 1980-11-25 Zenny Olsen Digital servovalve and method of operation
DE3140301A1 (en) * 1981-10-10 1983-04-28 Bosch und Pierburg System oHG, 4040 Neuss CONTROL DEVICE FOR A PRESSURE CONTROLLED ACTUATOR
US5129310A (en) * 1990-06-15 1992-07-14 Hydraulic Units, Incorporated Auto rigging for servo actuator system
MX9300781A (en) * 1992-02-13 1993-09-30 Johnson Service Co ELECTRONIC PILOT POSITIONER.
DE4410103C1 (en) * 1994-03-21 1995-08-31 Mannesmann Ag Drive of the fluidic or electrical type with a control
US6368522B1 (en) * 2000-01-03 2002-04-09 Johnson & Johnson Vision Care, Inc. Mold for forming a contact lens and method of preventing formation of small strands of contact lens material during contact lens manufacture
DE102009005998B4 (en) * 2009-01-23 2012-12-27 Voith Patent Gmbh Hydraulic drive device with two pressure chambers and method for operating a hydraulic drive device with two pressure chambers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079899A (en) * 1959-05-29 1963-03-05 Fuji Tsushinki Seizo Kk Feedback-type oil-hydraulic drive
US3222996A (en) * 1963-03-29 1965-12-14 Honeywell Inc Controlling apparatus
US3216331A (en) * 1963-05-24 1965-11-09 Robertshaw Controls Co Electric-pneumatic process controller
US3266378A (en) * 1964-06-16 1966-08-16 Jared W Shaw Variable gain solenoid valve control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140871A (en) * 1983-06-03 1984-12-05 Bowthorpe Hellermann Ltd Piston and cylinder actuator control

Also Published As

Publication number Publication date
US3664234A (en) 1972-05-23
DE2120661A1 (en) 1972-11-09
CA948294A (en) 1974-05-28
FR2086381A1 (en) 1971-12-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees