GB1160078A - Electronic Process Control Apparatus - Google Patents

Electronic Process Control Apparatus

Info

Publication number
GB1160078A
GB1160078A GB49017/66A GB4901766A GB1160078A GB 1160078 A GB1160078 A GB 1160078A GB 49017/66 A GB49017/66 A GB 49017/66A GB 4901766 A GB4901766 A GB 4901766A GB 1160078 A GB1160078 A GB 1160078A
Authority
GB
United Kingdom
Prior art keywords
circuit
capacitor
amplifier
switch
input
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
GB49017/66A
Other languages
English (en)
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.)
Schneider Electric Systems USA Inc
Original Assignee
Foxboro 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 Foxboro Co filed Critical Foxboro Co
Publication of GB1160078A publication Critical patent/GB1160078A/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
    • G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
    • G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
    • 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
    • G05B5/00—Anti-hunting arrangements
    • G05B5/01—Anti-hunting arrangements electric

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)
  • Amplifiers (AREA)
GB49017/66A 1965-11-15 1966-11-01 Electronic Process Control Apparatus Expired GB1160078A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50776565A 1965-11-15 1965-11-15

Publications (1)

Publication Number Publication Date
GB1160078A true GB1160078A (en) 1969-07-30

Family

ID=24020042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49017/66A Expired GB1160078A (en) 1965-11-15 1966-11-01 Electronic Process Control Apparatus

Country Status (5)

Country Link
US (1) US3467874A (en:Method)
DE (1) DE1538495A1 (en:Method)
FR (1) FR1499750A (en:Method)
GB (1) GB1160078A (en:Method)
NL (1) NL6614429A (en:Method)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517680A (en) * 1968-03-14 1970-06-30 Foxboro Co Control apparatus and method for processes having long time lags
US3550014A (en) * 1969-12-22 1970-12-22 Foxboro Co Electronic control apparatus having improved transfer means
US3696304A (en) * 1970-06-29 1972-10-03 Monsanto Co Proportional only process controller
US3826991A (en) * 1972-11-09 1974-07-30 Honeywell Inc Process controller having electronic manual control

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124743A (en) * 1964-03-10 H riseman
US2909620A (en) * 1954-01-05 1959-10-20 Bell Telephone Labor Inc Mu-beta measurement in feedback systems
US2850650A (en) * 1956-03-29 1958-09-02 Bell Telephone Labor Inc Transistor current limiter
US2857562A (en) * 1956-06-18 1958-10-21 Daystrom Inc Electrical damping network
NL238727A (en:Method) * 1958-04-30 1900-01-01
US2906941A (en) * 1958-06-10 1959-09-29 Bell Telephone Labor Inc Current supply apparatus
US3069618A (en) * 1959-08-19 1962-12-18 Reliance Electric & Eng Co Limit circuit
US3167718A (en) * 1961-04-26 1965-01-26 Donovan C Davis Automatic frequency acquisition circuit
US3237116A (en) * 1961-12-14 1966-02-22 Leeds & Northrup Co Amplifiers and corrective circuits therefor
US3349321A (en) * 1964-12-24 1967-10-24 Chemcell Ltd Bridge with automatic zero

Also Published As

Publication number Publication date
NL6614429A (en:Method) 1967-05-16
FR1499750A (fr) 1967-10-27
US3467874A (en) 1969-09-16
DE1538495A1 (de) 1970-08-06

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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