GB791054A - Improvements in electric control systems - Google Patents

Improvements in electric control systems

Info

Publication number
GB791054A
GB791054A GB36196/54A GB3619654A GB791054A GB 791054 A GB791054 A GB 791054A GB 36196/54 A GB36196/54 A GB 36196/54A GB 3619654 A GB3619654 A GB 3619654A GB 791054 A GB791054 A GB 791054A
Authority
GB
United Kingdom
Prior art keywords
amplifier
gain
feed
group
generator
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
GB36196/54A
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.)
General Electric Co
Original Assignee
General Electric Co
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 US398061A external-priority patent/US2762964A/en
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB791054A publication Critical patent/GB791054A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G05B5/00—Anti-hunting arrangements
    • G05B5/01—Anti-hunting arrangements electric
    • 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
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/012—Automatic controllers electric details of the transmission means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Eletrric Generators (AREA)
  • Amplifiers (AREA)

Abstract

791,054. Automatic control systems; exciting dynamos. GENERAL ELECTRIC CO. Dec. 14, 1954 [Dec. 14, 1953], No. 36196/54. Classes 35 and 38 (4). [Also in Groups XXXIX and XL (c)] Automatic control.-A dead band is introduced into a servo-control system (used in an unspecified manner for an unspecified purpose) by providing the amplifier with degenerative feedback which reduces the gain only when the input signal is small. Almost full gain is obtained for large input signals by shunting the feed-back loop with a pair of biased diodes which conduct when the signal exceeds a preset level. The amplifier may be either an amplidyne, see below; a magnetic amplifier (see Group XXXIX); or a thermionic valve amplifier (see Group XL (c)). Exciting dynamos.-An amplidyne generator 1 for the control system above has a feed-back winding 10, which opposes the main control winding 8, connected across the output terminals of the generator in series with a variable resistor 1, thus reducing the effective gain of the generator as an amplifier. The winding 10 is shunted by reversely poled rectifiers 17, 21, each in series with a biasing source 13, 19. When the output voltage exceeds the level set by the biasing sources 13, 19, the appropriate diode 17 or 21 (according to polarity) conducts and reduces the feed-back and hence provides almost full gain for large input signals, whilst the arrangement has a small gain for small input signals. Specifications 497,060, [Group XL], and 665,541, [Group XXXVIII], are referred to.
GB36196/54A 1953-12-14 1954-12-14 Improvements in electric control systems Expired GB791054A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US1100770XA 1953-12-14 1953-12-14
US791054XA 1953-12-14 1953-12-14
US328874XA 1953-12-14 1953-12-14
US398061A US2762964A (en) 1953-12-14 1953-12-14 Regulating control system
JP2664454A JPS313615B1 (en) 1953-12-14 1954-12-07

Publications (1)

Publication Number Publication Date
GB791054A true GB791054A (en) 1958-02-19

Family

ID=54707466

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36196/54A Expired GB791054A (en) 1953-12-14 1954-12-14 Improvements in electric control systems

Country Status (3)

Country Link
JP (1) JPS313615B1 (en)
DE (1) DE1100770B (en)
GB (1) GB791054A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2424414A1 (en) * 1978-04-25 1979-11-23 Gen Electric NON LINEAR SPEED REGULATION CIRCUIT FOR A GAS TURBINE / ALTERNATOR UNIT
IT202000017866A1 (en) * 2020-07-23 2022-01-23 Errevi Elett S R L METHOD OF CHECKING A PRE-ENGRAVER TOOL OF A PLATE ENGRAVING MACHINE AND RELATED ENGRAVING MACHINE

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764830C (en) * 1939-04-06 1954-03-15 Aeg Control device with adjusting motor
GB657315A (en) * 1948-06-18 1951-09-19 Richard Henry Tizard Electrical control system
DE902638C (en) * 1950-08-07 1954-01-25 Asea Ab Arrangement with automatic electrical regulators

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2424414A1 (en) * 1978-04-25 1979-11-23 Gen Electric NON LINEAR SPEED REGULATION CIRCUIT FOR A GAS TURBINE / ALTERNATOR UNIT
IT202000017866A1 (en) * 2020-07-23 2022-01-23 Errevi Elett S R L METHOD OF CHECKING A PRE-ENGRAVER TOOL OF A PLATE ENGRAVING MACHINE AND RELATED ENGRAVING MACHINE

Also Published As

Publication number Publication date
DE1100770B (en) 1961-03-02
JPS313615B1 (en) 1956-05-18

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