FR2067100A1 - Control of multi parameter process such as polyurethane - blending - Google Patents

Control of multi parameter process such as polyurethane - blending

Info

Publication number
FR2067100A1
FR2067100A1 FR6937737A FR6937737A FR2067100A1 FR 2067100 A1 FR2067100 A1 FR 2067100A1 FR 6937737 A FR6937737 A FR 6937737A FR 6937737 A FR6937737 A FR 6937737A FR 2067100 A1 FR2067100 A1 FR 2067100A1
Authority
FR
France
Prior art keywords
blending
polyurethane
control
parameter process
multi parameter
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.)
Withdrawn
Application number
FR6937737A
Other languages
French (fr)
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.)
Pharmacia and Upjohn Co
Original Assignee
Upjohn 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 Upjohn Co filed Critical Upjohn Co
Priority to FR6937737A priority Critical patent/FR2067100A1/en
Publication of FR2067100A1 publication Critical patent/FR2067100A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
    • G05D11/132—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components by controlling the flow of the individual components

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Control system for monitoring and correcting several parameter relationships, where each is represented by a signal frequency. The frequency ratios can rapidly be analysed by digital computer pref. sampling signals proportionally to the degree of deviation from the required balance. Used e.g. for automatic continuous blending of components of a polyurethane resin compn. to maintain uniformity. The signals may be transmitted considerable distances without interferences. The pattern of signal inspection is easily varied.
FR6937737A 1969-11-03 1969-11-03 Control of multi parameter process such as polyurethane - blending Withdrawn FR2067100A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6937737A FR2067100A1 (en) 1969-11-03 1969-11-03 Control of multi parameter process such as polyurethane - blending

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6937737A FR2067100A1 (en) 1969-11-03 1969-11-03 Control of multi parameter process such as polyurethane - blending

Publications (1)

Publication Number Publication Date
FR2067100A1 true FR2067100A1 (en) 1971-08-20

Family

ID=9042511

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6937737A Withdrawn FR2067100A1 (en) 1969-11-03 1969-11-03 Control of multi parameter process such as polyurethane - blending

Country Status (1)

Country Link
FR (1) FR2067100A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse