FR2118215A5 - Automatic gauge control - of cold rolled strip with compensation for delay in thickness measurement - Google Patents

Automatic gauge control - of cold rolled strip with compensation for delay in thickness measurement

Info

Publication number
FR2118215A5
FR2118215A5 FR7044995A FR7044995A FR2118215A5 FR 2118215 A5 FR2118215 A5 FR 2118215A5 FR 7044995 A FR7044995 A FR 7044995A FR 7044995 A FR7044995 A FR 7044995A FR 2118215 A5 FR2118215 A5 FR 2118215A5
Authority
FR
France
Prior art keywords
feedback
delay
compensation
cold rolled
thickness measurement
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
FR7044995A
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.)
INST METALL
Original Assignee
INST METALL
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 INST METALL filed Critical INST METALL
Priority to FR7044995A priority Critical patent/FR2118215A5/en
Application granted granted Critical
Publication of FR2118215A5 publication Critical patent/FR2118215A5/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/165—Control of thickness, width, diameter or other transverse dimensions responsive mainly to the measured thickness of the product

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

The strip thickness on continuous cold rolling mills is automatically controlled either by roll speed or by screwdown variation by means of a derivative feedback from output to input of the control circuit. This feedback is cancelled when the difference between the derivation feedback signal and the signal which is proportional to the deviation of the strip thickness from the desired value becomes zero. The feedback includes an integrator in series with a nonlinear converter to limit the feedback signal proportionally to the thickness change compensated by the controller during the delay time of the thickness measurements.
FR7044995A 1970-12-14 1970-12-14 Automatic gauge control - of cold rolled strip with compensation for delay in thickness measurement Expired FR2118215A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7044995A FR2118215A5 (en) 1970-12-14 1970-12-14 Automatic gauge control - of cold rolled strip with compensation for delay in thickness measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7044995A FR2118215A5 (en) 1970-12-14 1970-12-14 Automatic gauge control - of cold rolled strip with compensation for delay in thickness measurement

Publications (1)

Publication Number Publication Date
FR2118215A5 true FR2118215A5 (en) 1972-07-28

Family

ID=9065740

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7044995A Expired FR2118215A5 (en) 1970-12-14 1970-12-14 Automatic gauge control - of cold rolled strip with compensation for delay in thickness measurement

Country Status (1)

Country Link
FR (1) FR2118215A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443885A1 (en) * 1978-12-13 1980-07-11 Chabanov Alim Strip mill automatic thickness control appts. - uses electronic logic circuit and hydraulic circuit to adjust roll gap

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443885A1 (en) * 1978-12-13 1980-07-11 Chabanov Alim Strip mill automatic thickness control appts. - uses electronic logic circuit and hydraulic circuit to adjust roll gap

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Legal Events

Date Code Title Description
ST Notification of lapse