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 measurementInfo
- 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
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.
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)
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 |
-
1970
- 1970-12-14 FR FR7044995A patent/FR2118215A5/en not_active Expired
Cited By (1)
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 |