GB744630A - Improvements in and relating to servo-mechanical control systems - Google Patents

Improvements in and relating to servo-mechanical control systems

Info

Publication number
GB744630A
GB744630A GB1500653A GB1500653A GB744630A GB 744630 A GB744630 A GB 744630A GB 1500653 A GB1500653 A GB 1500653A GB 1500653 A GB1500653 A GB 1500653A GB 744630 A GB744630 A GB 744630A
Authority
GB
United Kingdom
Prior art keywords
voltage
amplifier
feedback
generator
error voltage
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
GB1500653A
Inventor
William Harrison Sykes
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB1500653A priority Critical patent/GB744630A/en
Publication of GB744630A publication Critical patent/GB744630A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
    • G01S3/42—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1427—Control of position or direction using feedback using an analogue comparing device with non-linear amplifier chain

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Automation & Control Theory (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Adjustable Resistors (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

744,630. Electric correspondence control systems. ENGLISH ELECTRIC CO.. Ltd. May 28, 1954 [May 29, 1953], No. 15006/53. Class 40(1) [Also in Group XL(c)] A follow-up servo-system wherein the error voltage is derived from the sliders of two potentiometers is characterized in that this voltage is fed through an amplifier with a feedback circuit whose resistance is automatically changed at a predetermined level of error voltage so that the amplifier has a larger gain for a low error voltage, in order to reduce the zone of no-response due to static friction. As shown (Fig.. 2) where the movement of slide 4 of potentiometer 1 is to be followed by corresponding movement of slider 5 of potentiometer 2 the error voltage Ve is amplified at 6 to energize the field winding 7 of a generator 8 which feeds a servo motor 9 to drive the slider 5 until the error signal is reduced to zero. A feedback network comprising resistors 12-15 and rectifiers 16, 17 is connected between 'the output of generator 8 and the input of the amplifier 6, the network containing a source 18 of bias current, such that when the output voltage Vg from generator 8 is high and e.g. positive, the feedback path is through low resistance 15 and rectifier 17 to give a large feedback factor and restrict the overall gain of the system, but when the output voltage Vg is small the current through rectifier 17 ceases and the feedback path passes through the larger resistance 13 and the overall gain of the system is increased.
GB1500653A 1953-05-29 1953-05-29 Improvements in and relating to servo-mechanical control systems Expired GB744630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1500653A GB744630A (en) 1953-05-29 1953-05-29 Improvements in and relating to servo-mechanical control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1500653A GB744630A (en) 1953-05-29 1953-05-29 Improvements in and relating to servo-mechanical control systems

Publications (1)

Publication Number Publication Date
GB744630A true GB744630A (en) 1956-02-08

Family

ID=10051405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1500653A Expired GB744630A (en) 1953-05-29 1953-05-29 Improvements in and relating to servo-mechanical control systems

Country Status (1)

Country Link
GB (1) GB744630A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991005297A1 (en) * 1989-09-26 1991-04-18 Robert Bosch Gmbh Process for regulating a setting system subject to friction
US5694016A (en) * 1989-09-26 1997-12-02 Robert Bosch Gmbh Method for controlling a servo system having friction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991005297A1 (en) * 1989-09-26 1991-04-18 Robert Bosch Gmbh Process for regulating a setting system subject to friction
US5694016A (en) * 1989-09-26 1997-12-02 Robert Bosch Gmbh Method for controlling a servo system having friction

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