GB446665A - Improvements in or relating to electrical control systems - Google Patents

Improvements in or relating to electrical control systems

Info

Publication number
GB446665A
GB446665A GB27383/34A GB2738334A GB446665A GB 446665 A GB446665 A GB 446665A GB 27383/34 A GB27383/34 A GB 27383/34A GB 2738334 A GB2738334 A GB 2738334A GB 446665 A GB446665 A GB 446665A
Authority
GB
United Kingdom
Prior art keywords
motor
control
vario
hunting
sept
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
GB27383/34A
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 Inc
Original Assignee
Sperry Gyroscope Co Inc
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 Inc filed Critical Sperry Gyroscope Co Inc
Publication of GB446665A publication Critical patent/GB446665A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G05D3/16—Control of position or direction using feedback using an analogue comparing device whose output amplitude can only take a number of discrete values
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/16—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step
    • H02P9/18—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step the switching being caused by a servomotor, measuring instrument, or relay

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Velocity Or Acceleration (AREA)

Abstract

446,665. Control of A.C. motors. SPERRY GYROSCOPE CO., Inc., Manhattan Bridge Plaza, Brooklyn, New York, U.S.A.- (Assignees of Riggs, A. S.) Sept. 24, 1934, No. 27383. Convention date, Sept. 23, 1933. Drawings to Specification. [Class 38 (iii)] [See also Group XXXVIII] The Specification as open to inspection under Sect. 91 describes a system of speed control for a motor, which may be of the repulsion type, wherein hunting of the motor is eliminated. Speed control is effected by a vario-coupled transformer which supplies the grids of a pair of valves, the outputs of which control the motor. Hunting is eliminated by an auxiliary generator driven by the motor and adapted to superpose in the control circuit a voltage which is proportional to the motor speed and acts in opposition to the voltage derived from the vario - coupled transformer. This subjectmatter does not appear in the Specification as accepted.
GB27383/34A 1934-09-23 1934-09-24 Improvements in or relating to electrical control systems Expired GB446665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US446665XA 1934-09-23 1934-09-23

Publications (1)

Publication Number Publication Date
GB446665A true GB446665A (en) 1936-04-24

Family

ID=21933635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27383/34A Expired GB446665A (en) 1934-09-23 1934-09-24 Improvements in or relating to electrical control systems

Country Status (1)

Country Link
GB (1) GB446665A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753969C (en) * 1936-12-20 1952-08-04 Siemens App Electrical control of a z. B. a heavy object adjusting engine via grid-controlled gas or vapor discharge vessels
DE767721C (en) * 1938-04-29 1953-04-09 Siemens App Device for motorized adjustment, in particular remote adjustment of an object
DE975852C (en) * 1949-11-01 1962-11-22 Siemens Ag Arrangement for controlling the speed and direction of rotation of a DC servomotor
GB2238406A (en) * 1987-02-02 1991-05-29 Japan Res Dev Corp Servo system for piezo-electric actuator.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753969C (en) * 1936-12-20 1952-08-04 Siemens App Electrical control of a z. B. a heavy object adjusting engine via grid-controlled gas or vapor discharge vessels
DE767721C (en) * 1938-04-29 1953-04-09 Siemens App Device for motorized adjustment, in particular remote adjustment of an object
DE975852C (en) * 1949-11-01 1962-11-22 Siemens Ag Arrangement for controlling the speed and direction of rotation of a DC servomotor
GB2238406A (en) * 1987-02-02 1991-05-29 Japan Res Dev Corp Servo system for piezo-electric actuator.
GB2238406B (en) * 1987-02-02 1991-10-23 Japan Res Dev Corp Apparatus for controlling servo system employing piezso-electric actuator

Similar Documents

Publication Publication Date Title
GB446665A (en) Improvements in or relating to electrical control systems
GB458274A (en) Apparatus for solving vector triangles
GB360428A (en) Improvements in electrical follow-up systems for precision instruments such as gyroscopic compasses
GB552118A (en) Improvements in or relating to electrical control systems
DE542408C (en) Arrangement for regulating the current in the slip frequency leading excitation winding of commutator rear machines
GB413501A (en) Improvements in and relating to electric motor control systems
GB498586A (en) Improvement in electric motors
GB943241A (en) Improvements in or relating to rectifier circuit arrangements
GB823898A (en) Improvements in magnetic amplifiers
GB616248A (en) Improvements in and relating to servo systems
GB1003312A (en) Improvements in variable speed electric drives
GB617324A (en) Improvements in and relating to electric motor control systems
GB554622A (en) Improvements in the automatic regulation of the current in an electric circuit
GB802214A (en) Improvements in or relating to electric measuring instruments for alternating-current quantities
GB555917A (en) Improvements in and relating to electrical voltage regulating systems
GB662841A (en) A control system for alternating-current motors
GB637544A (en) Improvements in or relating to speed-regulating arrangements for electric motors
GB532434A (en) Improvements in motor control systems employing variable voltage transformers
GB652191A (en) Improvements in or relating to protective systems for polyphase transmission lines
FR44784E (en) Improvements to power supply and control systems for synchronous and asynchronous machines
GB373452A (en) Improvements in and relating to voltage regulating transformers
Aitken Awarded the Gold Medal for his work on double stars
GB768045A (en) Synchro null voltage system and method
GB493457A (en) Improvements in or relating to electric indicating or control systems
GB430248A (en) Improvements in and relating to apparatus for producing pulsations in an alternatingcurrent circuit