JPS561209A - Controlling method for loop in loop-controlled rolling work - Google Patents
Controlling method for loop in loop-controlled rolling workInfo
- Publication number
- JPS561209A JPS561209A JP7455779A JP7455779A JPS561209A JP S561209 A JPS561209 A JP S561209A JP 7455779 A JP7455779 A JP 7455779A JP 7455779 A JP7455779 A JP 7455779A JP S561209 A JPS561209 A JP S561209A
- Authority
- JP
- Japan
- Prior art keywords
- loop
- signal
- ent
- driving motor
- speed
- 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)
Abstract
PURPOSE:To widen the controllable range of the loop, and to greatly improve the rolling speed, by summing up the reference speed setting signal for the rolling roll's driving motor and the loop correction signal. CONSTITUTION:The reference speed setting signal Sn for the rolling roll's driving motor of the n-th stand and the loop correction signal (en) are inputted to the limiting amplifier 1 which then sums up these two signals. The voltage value EnT corresponding to the motor's over-speed trip set point is given as the limiting point. In case of (Sn+en)<EnT, the output signal Ex of the amplifier 1 becomes Ex= (Sn+en), and the output signal Cn of the amplifier 2 becomes Cn=en. Accordingly, the signal level of the loop correction signal en<EnT is inputted to the driving motor's speed control circuit as the control level. In case of (Sn+en)>EnT, the output signal Cn becomes EnT-Sn. As a result, the rolling roll's driving motor is operated always at a lower speed than that causing the overspeed tripping stop, even if the signal level of the loop correction signal (en) is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7455779A JPS561209A (en) | 1979-06-15 | 1979-06-15 | Controlling method for loop in loop-controlled rolling work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7455779A JPS561209A (en) | 1979-06-15 | 1979-06-15 | Controlling method for loop in loop-controlled rolling work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS561209A true JPS561209A (en) | 1981-01-08 |
Family
ID=13550643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7455779A Pending JPS561209A (en) | 1979-06-15 | 1979-06-15 | Controlling method for loop in loop-controlled rolling work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS561209A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54139670A (en) * | 1978-04-17 | 1979-10-30 | Windmoeller & Hoelscher | Optimum adjustment of blow film extrusion output by use of process computer and apparatus therefor |
| JPS59123624A (en) * | 1982-12-28 | 1984-07-17 | Mitsui Petrochem Ind Ltd | Apparatus for forming inflation film |
-
1979
- 1979-06-15 JP JP7455779A patent/JPS561209A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54139670A (en) * | 1978-04-17 | 1979-10-30 | Windmoeller & Hoelscher | Optimum adjustment of blow film extrusion output by use of process computer and apparatus therefor |
| JPS5830127B2 (en) * | 1978-04-17 | 1983-06-27 | ウインドメ−レル ウント ヘルシエル | How to optimize the output of a blow film extrusion plant using a process computer |
| JPS59123624A (en) * | 1982-12-28 | 1984-07-17 | Mitsui Petrochem Ind Ltd | Apparatus for forming inflation film |
| JPH0340691B2 (en) * | 1982-12-28 | 1991-06-19 |
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