GB617425A - Improvements relating to electric follow-up control mechanism - Google Patents

Improvements relating to electric follow-up control mechanism

Info

Publication number
GB617425A
GB617425A GB903246A GB903246A GB617425A GB 617425 A GB617425 A GB 617425A GB 903246 A GB903246 A GB 903246A GB 903246 A GB903246 A GB 903246A GB 617425 A GB617425 A GB 617425A
Authority
GB
United Kingdom
Prior art keywords
windings
armature
parallel
brake
gear
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
GB903246A
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.)
PREC DEVELOPMENTS CO Ltd
Original Assignee
PREC DEVELOPMENTS 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 PREC DEVELOPMENTS CO Ltd filed Critical PREC DEVELOPMENTS CO Ltd
Priority to GB903246A priority Critical patent/GB617425A/en
Publication of GB617425A publication Critical patent/GB617425A/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
    • G05D3/125—Control of position or direction using feedback using discrete position sensor
    • G05D3/127—Control of position or direction using feedback using discrete position sensor with electrical contact

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Braking Arrangements (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

617,425. Electric follow-up systems. PRECISION DEVELOPMENTS CO., Ltd., and OLAH, G. March 23, 1946, Nos. 9032 and 37743. [Class 40 (i)] A reversible servomotor arrangement has a brake which is released during operation by two of three windings, one in parallel with the armature and the others each in parallel with one of the field windings. A controlling member 15 is attached to a spindle 11 carrying two toothed wheels 9, 10, insulated from each other and connected through brushes 7, 8 to opposed field windings 4, 5 respectively, and thence through the armature 1 to mains lead A. A loosely meshing gear 13 is mounted on the controlled shaft 14 and electrically connected through brush 12 to mains lead B. When member 15 is moved from rest in either direction, one or other gear 9, 10 touches gear 13 and completes a circuit through the appropriate winding 4, 5 to drive the motor in the corresponding direction. Controlled member 16 thus follows member 15 until the latter stops and gears 9, 10, 13 break the drive circuit. A friction brake 18 normally holds the motor shaft 14, but may be released by windings 20, 21, 22 connected in parallel with windings 5, 4 and the armature respectively. With this arrangement, release of the brake is always effected by two windings in series, which between them have the full mains voltage across them, irrespective of the actual voltage drop across the armature and field individually Specification 556,287 is referred to.
GB903246A 1946-03-23 1946-03-23 Improvements relating to electric follow-up control mechanism Expired GB617425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB903246A GB617425A (en) 1946-03-23 1946-03-23 Improvements relating to electric follow-up control mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB903246A GB617425A (en) 1946-03-23 1946-03-23 Improvements relating to electric follow-up control mechanism

Publications (1)

Publication Number Publication Date
GB617425A true GB617425A (en) 1949-02-07

Family

ID=9864080

Family Applications (1)

Application Number Title Priority Date Filing Date
GB903246A Expired GB617425A (en) 1946-03-23 1946-03-23 Improvements relating to electric follow-up control mechanism

Country Status (1)

Country Link
GB (1) GB617425A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752396A (en) * 1995-10-14 1998-05-19 H. Stoll Gmbh & Co. Thread control device for flat knitting machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752396A (en) * 1995-10-14 1998-05-19 H. Stoll Gmbh & Co. Thread control device for flat knitting machine

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