GB1466262A - Periodic control method and apparatus therefor - Google Patents

Periodic control method and apparatus therefor

Info

Publication number
GB1466262A
GB1466262A GB1295273A GB1295273A GB1466262A GB 1466262 A GB1466262 A GB 1466262A GB 1295273 A GB1295273 A GB 1295273A GB 1295273 A GB1295273 A GB 1295273A GB 1466262 A GB1466262 A GB 1466262A
Authority
GB
United Kingdom
Prior art keywords
control method
march
apparatus therefor
predetermined range
control signal
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
GB1295273A
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.)
BESTEL DEAN Ltd
Original Assignee
BESTEL DEAN 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 BESTEL DEAN Ltd filed Critical BESTEL DEAN Ltd
Priority to GB1295273A priority Critical patent/GB1466262A/en
Publication of GB1466262A publication Critical patent/GB1466262A/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
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/26—Automatic controllers electric in which the output signal is a pulse-train
    • G05B11/28—Automatic controllers electric in which the output signal is a pulse-train using pulse-height modulation; using pulse-width modulation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Barrages (AREA)

Abstract

1466262 Automatic control systems BESTEL DEAN Ltd 6 March 1974 [17 March 1973] 12952/73 Heading G3R The difference between a measured variable e.g. flow of water through a sluice and a desired value for the variable is added to a separately generated triangular waveform of the shape shown thereby shifting its datum, any part of the shifted waveform that lies outside a predetermined range (e.g. +V and -V) being used to produce a control signal to correct the measured variable. The control signal varies in proportion to the triangular waveform during the time that it is outside the predetermined range.
GB1295273A 1974-03-06 1974-03-06 Periodic control method and apparatus therefor Expired GB1466262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1295273A GB1466262A (en) 1974-03-06 1974-03-06 Periodic control method and apparatus therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1295273A GB1466262A (en) 1974-03-06 1974-03-06 Periodic control method and apparatus therefor

Publications (1)

Publication Number Publication Date
GB1466262A true GB1466262A (en) 1977-03-02

Family

ID=10014139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1295273A Expired GB1466262A (en) 1974-03-06 1974-03-06 Periodic control method and apparatus therefor

Country Status (1)

Country Link
GB (1) GB1466262A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480959A1 (en) * 1980-04-18 1981-10-23 Org Europeene De Rech Magnetic suspension system for use in satellites - includes low power consumption control circuit providing correcting current to four positioning coils
WO1983001693A1 (en) * 1981-11-06 1983-05-11 Henry Christopher Lewis Fluid flow control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480959A1 (en) * 1980-04-18 1981-10-23 Org Europeene De Rech Magnetic suspension system for use in satellites - includes low power consumption control circuit providing correcting current to four positioning coils
WO1983001693A1 (en) * 1981-11-06 1983-05-11 Henry Christopher Lewis Fluid flow control system

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee