GB1139227A - Motion control systems - Google Patents

Motion control systems

Info

Publication number
GB1139227A
GB1139227A GB610966A GB610966A GB1139227A GB 1139227 A GB1139227 A GB 1139227A GB 610966 A GB610966 A GB 610966A GB 610966 A GB610966 A GB 610966A GB 1139227 A GB1139227 A GB 1139227A
Authority
GB
United Kingdom
Prior art keywords
speed
energized
aug
biased
sbr
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
GB610966A
Inventor
George Eric Minns
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.)
Dewhurst and Partner PLC
Original Assignee
Dewhurst and Partner PLC
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 Dewhurst and Partner PLC filed Critical Dewhurst and Partner PLC
Priority to GB610966A priority Critical patent/GB1139227A/en
Publication of GB1139227A publication Critical patent/GB1139227A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
    • H02P3/26—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by combined electrical and mechanical braking

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

1,139,227. Brake control. DEWHURST & PARTNER Ltd. 9 Aug., 1967 [11 Aug., 1966], No. 6109/66. Heading F2E. [Also in Division G3] A mechanism, e.g. in a crane, having a main brake MBr which is biased on, is controlled at creep speed by a subsidiary brake SBr which is biased off but is applied by an amount proportional to the speed which thus is kept substantially constant. Both brakes are electromechanical; the electro-magnet EM for SBr is energized from a transistor circuit MC which receives a speed dependent voltage. As shown, this is from the slip rings of the motor M whose stator is energized with D.C. for the purpose, but alternatively a tachogenerator is provided.
GB610966A 1966-08-11 1966-08-11 Motion control systems Expired GB1139227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB610966A GB1139227A (en) 1966-08-11 1966-08-11 Motion control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB610966A GB1139227A (en) 1966-08-11 1966-08-11 Motion control systems

Publications (1)

Publication Number Publication Date
GB1139227A true GB1139227A (en) 1969-01-08

Family

ID=9808552

Family Applications (1)

Application Number Title Priority Date Filing Date
GB610966A Expired GB1139227A (en) 1966-08-11 1966-08-11 Motion control systems

Country Status (1)

Country Link
GB (1) GB1139227A (en)

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