GB809758A - Servo systems - Google Patents

Servo systems

Info

Publication number
GB809758A
GB809758A GB643657A GB643657A GB809758A GB 809758 A GB809758 A GB 809758A GB 643657 A GB643657 A GB 643657A GB 643657 A GB643657 A GB 643657A GB 809758 A GB809758 A GB 809758A
Authority
GB
United Kingdom
Prior art keywords
control valve
potentiometer
control
hydraulic
dead zone
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
GB643657A
Inventor
Frederick Arthur Summerlin
Neal Sullivan
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 Gyroscope Co Ltd
Original Assignee
Sperry Gyroscope Co Ltd
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 Gyroscope Co Ltd filed Critical Sperry Gyroscope Co Ltd
Priority to GB643657A priority Critical patent/GB809758A/en
Publication of GB809758A publication Critical patent/GB809758A/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

Abstract

809,758. Automatic control systems. SPERRY GYROSCOPE CO. Ltd. Feb. 26, 1957, No. 6436/57. Class 38 (4). [Also in Group XXIX] In an automatic control system including a hydraulic servomotor under the control of an hydraulic control valve and a negative feedback potentiometer operated by the control valve, the potentiometer is provided with a dead zone over which no change in feed-back occurs while the control valve moves over its dead zone. In a modification of the aircraft automatic pitch control system described in Specification 690,982 in which an hydraulic servomotor operating the elevators is under the control of an hydraulic control valve adjusted by an electromagnetically-controlled clutch energized by a signal corresponding to pitch deviation, a feed-back potentiometer 21, Fig. 3, operated by the control valve (not shown), is provided with a brass pin 20 having a spring- loaded concave tip 19 of previous metal which short-circuits a few turns of the potentiometer to provide the dead zone. Correct location of this zone is facilitated by mounting pin 20 eccentrically in a bush 23 which can be rotated and then locked in any position by nut 26 Specifications 691,027, [Group XXIV], also is referred to.
GB643657A 1957-02-26 1957-02-26 Servo systems Expired GB809758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB643657A GB809758A (en) 1957-02-26 1957-02-26 Servo systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB643657A GB809758A (en) 1957-02-26 1957-02-26 Servo systems

Publications (1)

Publication Number Publication Date
GB809758A true GB809758A (en) 1959-03-04

Family

ID=9814443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB643657A Expired GB809758A (en) 1957-02-26 1957-02-26 Servo systems

Country Status (1)

Country Link
GB (1) GB809758A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095784A (en) * 1959-07-28 1963-07-02 Short Brothers & Harland Ltd Electro-hydraulic control servomechanisms
US4132272A (en) * 1977-06-30 1979-01-02 International Harvester Company Tractor hitch position control system
US4132273A (en) * 1977-06-30 1979-01-02 International Harvester Company Tractor hitch control system having safety features

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095784A (en) * 1959-07-28 1963-07-02 Short Brothers & Harland Ltd Electro-hydraulic control servomechanisms
US4132272A (en) * 1977-06-30 1979-01-02 International Harvester Company Tractor hitch position control system
US4132273A (en) * 1977-06-30 1979-01-02 International Harvester Company Tractor hitch control system having safety features

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