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GB1273009A - Web speed control system - Google Patents

Web speed control system

Info

Publication number
GB1273009A
GB1273009A GB32330/69A GB3233069A GB1273009A GB 1273009 A GB1273009 A GB 1273009A GB 32330/69 A GB32330/69 A GB 32330/69A GB 3233069 A GB3233069 A GB 3233069A GB 1273009 A GB1273009 A GB 1273009A
Authority
GB
United Kingdom
Prior art keywords
pulses
speed
stable
train
monostable
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
GB32330/69A
Inventor
Joseph Francis Laukaitis
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1273009A publication Critical patent/GB1273009A/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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/16—Controlling the angular speed of one shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/922—Tuned or resonant circuit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/923—Specific feedback condition or device
    • Y10S388/933—Radiant energy responsive device

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

1,273,009. Automatic speed control. EASTMAN KODAK CO. June 26, 1969 [June 28, 1968], No. 32330/69. Heading G3R. In a web winding apparatus, e.g. for winding lengths of photographic film from a large reel 10 on to individual small spools 14, a first train of pulses is produced, e.g. by a photo-electric tachometer generator 18, whose duration represents the linear speed of the web 12; a further train of pulses of fixed duration is produced each pulse of the first train initiating a pulse of the further train; and a capacitor 30 controlling the speed of a take up motor 16 driving the spool 14 is arranged to be charged up through a first resistance 38 (to increase motor speed) while the first pulses are longer than the fixed duration pulses and to be discharged (to reduce motor speed) through a second resistance 36 when they are shorter. The speed pulses are applied to an amplifier 46 having two antiphase outputs. One output triggers both a bi-stable 52 and a monostable 54. After a time, pre-set by resistor 56 and representing the desired web speed, the monostable resets the bistable. The two outputs of the bi-stable 52 are compared with the two outputs of the amplifier by AND gates 62, 68 and other AND gates 64, 66 are opened to connect the capacitor through resistors 38, 36 to a supply V or ground respectively if the speed pulses are longer or shorter than the bi-stable pulses respectively. Transistor circuits for the amplifier, bi-stable, monostable and gates are described, Fig. 4 (not shown). A start switch is included which applies a starting pulse to set the circuit in operation (before the tachometer issues pulses) and to short the capacitor 30 ensuring a smooth start from standstill.
GB32330/69A 1968-06-28 1969-06-26 Web speed control system Expired GB1273009A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74118468A 1968-06-28 1968-06-28

Publications (1)

Publication Number Publication Date
GB1273009A true GB1273009A (en) 1972-05-03

Family

ID=24979717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32330/69A Expired GB1273009A (en) 1968-06-28 1969-06-26 Web speed control system

Country Status (5)

Country Link
US (1) US3579065A (en)
BE (1) BE735206A (en)
DE (1) DE1932574B2 (en)
FR (1) FR2012008A1 (en)
GB (1) GB1273009A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1147798A (en) * 1979-02-08 1983-06-07 Yoshio Nagakubo Helical scan recorder having capstan motor speed responsive to a frequency of a command signal
DE2915815A1 (en) * 1979-04-19 1980-11-06 Bauknecht Gmbh G DEVICE FOR DETECTING THE SPEED AND THE BALANCE OF AN AGGREGATE IN A HOUSING VIBRATINGLY
US4733146A (en) * 1984-11-09 1988-03-22 Reliance Electric Company Energy recovery system for cyclic drives
DE19647983A1 (en) * 1995-12-04 1997-06-05 Papst Motoren Gmbh & Co Kg Physical variable control method and device e.g. for electronically commutated electric motor
JP3964399B2 (en) * 2004-03-09 2007-08-22 カルソニックカンセイ株式会社 Electric motor drive device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753507A (en) * 1955-02-28 1956-07-03 Itt Motor speed control
US3324320A (en) * 1964-01-17 1967-06-06 Honeywell Inc Web tension control apparatus

Also Published As

Publication number Publication date
US3579065A (en) 1971-05-18
FR2012008A1 (en) 1970-03-13
DE1932574B2 (en) 1972-03-02
DE1932574A1 (en) 1970-01-08
BE735206A (en) 1969-12-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees