JPS5586609A - Tension controller - Google Patents
Tension controllerInfo
- Publication number
- JPS5586609A JPS5586609A JP15851278A JP15851278A JPS5586609A JP S5586609 A JPS5586609 A JP S5586609A JP 15851278 A JP15851278 A JP 15851278A JP 15851278 A JP15851278 A JP 15851278A JP S5586609 A JPS5586609 A JP S5586609A
- Authority
- JP
- Japan
- Prior art keywords
- output
- block
- current
- subtracter
- load current
- 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.)
- Pending
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
- B21B37/48—Tension control; Compression control
- B21B37/50—Tension control; Compression control by looper control
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
PURPOSE:To stabilize the rolling work, and to improve the size of product, by detecting only the load current from the armature current of the looper driving motor, and by employing the motor driven looper for controlling this load current. CONSTITUTION:The output of the voltage detector 21 is compared with and is subtracted from the counter electromotive force of the block 26 by the subtracter 22, and the result of the subtraction is inputted to the block 23; the block 23 produces the signal equivalent to the armature current correspondingly to the output of the subtracter 22; the output signal of the block 23 is converted into the torque by the block 24. Further, the output of the block 24 is integrated unitl the output of the block 24 becomes zero. And the block 23 produces the output equivalent to the speed changing current Ia, only when the speed of the motor 8 is being changed. Accordingly, the output Ia of the block 23 is subtracted 28 from the output I of the armature current detector 16, and the result of subtraction is always taken as the load current. The output of the divider 13, that is the aim current IO, is compared with the above load current IL by the subtracter 14; the difference between IO and IL is inputted to the current controller 15 which then controls the supply voltage for the motor 8 so as to make zero the output of the subtracter 14. As a result, the tension to be impressed on the rolled material 1 can be accurately held at the aim tension TO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15851278A JPS5586609A (en) | 1978-12-25 | 1978-12-25 | Tension controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15851278A JPS5586609A (en) | 1978-12-25 | 1978-12-25 | Tension controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5586609A true JPS5586609A (en) | 1980-06-30 |
Family
ID=15673346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15851278A Pending JPS5586609A (en) | 1978-12-25 | 1978-12-25 | Tension controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5586609A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0161223A2 (en) * | 1984-03-15 | 1985-11-13 | ANSALDO SISTEMI INDUSTRIALI S.p.A. | Device for regulating the draught of the strip in a hot rolling mill |
| JP2013111613A (en) * | 2011-11-29 | 2013-06-10 | Jfe Steel Corp | System and method for detecting fracture of metal strip |
-
1978
- 1978-12-25 JP JP15851278A patent/JPS5586609A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0161223A2 (en) * | 1984-03-15 | 1985-11-13 | ANSALDO SISTEMI INDUSTRIALI S.p.A. | Device for regulating the draught of the strip in a hot rolling mill |
| JP2013111613A (en) * | 2011-11-29 | 2013-06-10 | Jfe Steel Corp | System and method for detecting fracture of metal strip |
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