EP0056438A2 - Régulateur de vitesse pour un train multiple continu à réglage par boucle - Google Patents

Régulateur de vitesse pour un train multiple continu à réglage par boucle Download PDF

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Publication number
EP0056438A2
EP0056438A2 EP81108724A EP81108724A EP0056438A2 EP 0056438 A2 EP0056438 A2 EP 0056438A2 EP 81108724 A EP81108724 A EP 81108724A EP 81108724 A EP81108724 A EP 81108724A EP 0056438 A2 EP0056438 A2 EP 0056438A2
Authority
EP
European Patent Office
Prior art keywords
wire
loop
difference
frame
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.)
Granted
Application number
EP81108724A
Other languages
German (de)
English (en)
Other versions
EP0056438B1 (fr
EP0056438A3 (en
Inventor
Roland Weber
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AT81108724T priority Critical patent/ATE18950T1/de
Publication of EP0056438A2 publication Critical patent/EP0056438A2/fr
Publication of EP0056438A3 publication Critical patent/EP0056438A3/de
Application granted granted Critical
Publication of EP0056438B1 publication Critical patent/EP0056438B1/fr
Expired legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B2013/006—Multiple strand rolling mills; Mill stands with multiple caliber rolls

Definitions

  • the invention relates to a device for speed control in a continuous line, in which the rolling stock is divided into two or more wires, each with a loop controller assigned to each of the stands passed through one of the wires, the output variable of which is the speed controller for driving the associated stand as Reference variable is fed.
  • the invention has for its object to enable at least part of the rolling process to counteract the direction of travel of the wires. According to the invention, this object is achieved in that a ramp generator with storage behavior is connected to the output of the loop controller assigned to the exit frame and that in a difference former from the reference variable and the output Size of the ramp generator formed difference can be fed as an additional setpoint to the speed controllers for the scaffolds carrying the single wires.
  • the drawing shows a schematic representation of a 2-core fine iron mill that has a roughing line indicated by the rollers 1 of the last stand, an intermediate line per core with, for example, four stands indicated by the rollers 2 to 5 or 7 to 10, and an exit stand 6 or 11 includes.
  • a cropping shear 12 is located between the last stand 5 or 10 of the intermediate line and the exit stand 6 or 11.
  • Each roller drive 13 of the stands 2 to 6 (core I) or 7 to 11 (core II) is a speed controller 14 with a superimposed Loop controller 15 and a loop position sensor 16 connected to this assigned.
  • the output of the loop controller 15 assigned to the exit frame 6 or 11 is connected via a switch 17 to an input of a ramp generator 18 with storage behavior and directly to a first input of a difference former 19, at the second input of which the output signal of the ramp generator with storage behavior is present.
  • the output signal of the difference former is fed via an additional switch 20 to 24 to the speed controller 14 for driving the rollers 2 to 6 or 7 to 11 as an additional setpoint n z *.
  • the output variable (reference variable W) of the loop regulator 15 assigned to the outlet frame 6 of the core I or 11 of the core II is constantly present at the switches 17.
  • the switches 17 and the ramp generator 18 receive a changeover signal via the line 25.
  • the sign of the command variable W supplied via the closed switches is reversed in the ramp generator so that the difference at the output of the difference generator is zero. If the end of wire I or II leaves the last scaffold 1 common to both wires, switch 17 is opened and the value of the command variable present at the time of changeover is stored in the ramp function generator. The difference between the actual value and the stored value of the reference variable now appears at the output of the difference generator.
  • the switches 20 to 24 are closed at the point in time at which the wire I or II leaves the last, common frame 1, so that the difference present at the time of the output of the difference former causes the speed controllers on the frames 2 to 6 or 7 to 11 is supplied as additional speed setpoint n z *. Since the difference is zero by the time switch 17 opens and switches 20 to 24 close, the control is smoothly switched to reverse control.
  • a difference causes a change in the speed level.
  • Each of the switches 20'to 24 remains closed until the end of the wire I or II has run out of the associated frame.
  • the exit scaffold 6 to 11 represents the master scaffold, which essentially maintains its speed at the time of storage, because any adjustment to the exit scaffold required by the command variable W is just compensated by the additional percentage setpoint n z * supplied to all scaffolds still in engagement .
  • the exit scaffold 6 or 11 which acts as a guide scaffold, strives for its original setpoint speed n * already during the material discharge from the street. As a result, these scaffolds are ready to accept a new wire earlier. Depending on the given integration, a changeover shock to the outlet scaffold, which is empty due to a wire gap, can be completely avoided. This is particularly advantageous if there is no rapid electrical braking for this scaffolding.
  • the ramp generator can also be dimensioned such that the copying speed is limited when switch 17 is closed. This prevents purely random values of the command variable W, possibly due to a fault, from occurring at the time of the storage.
  • the stored analog values then represent characteristic values.
  • it can be temporarily and automatically regulated in both directions if a strong dynamic associated with loop formation after piercing occurs. The speed level then temporarily does not remain zero until the ramp generator can follow the signal at its input again. The prerequisite for this, however, is that the switches 20 to 24 are already closed when the wire enters the respective exit frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Metal Rolling (AREA)
  • Control Of Multiple Motors (AREA)
  • Liquid Crystal Substances (AREA)
  • Advancing Webs (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
EP81108724A 1981-01-19 1981-10-22 Régulateur de vitesse pour un train multiple continu à réglage par boucle Expired EP0056438B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108724T ATE18950T1 (de) 1981-01-19 1981-10-22 Einrichtung zur drehzahlregelung in einer mehradrigen, schlingengeregelten kontistrasse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3101512 1981-01-19
DE19813101512 DE3101512A1 (de) 1981-01-19 1981-01-19 Einrichtung zur drehzahlregelung in einer mehradrigen, schlingengeregelten kontistrasse

Publications (3)

Publication Number Publication Date
EP0056438A2 true EP0056438A2 (fr) 1982-07-28
EP0056438A3 EP0056438A3 (en) 1983-08-31
EP0056438B1 EP0056438B1 (fr) 1986-04-02

Family

ID=6122884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108724A Expired EP0056438B1 (fr) 1981-01-19 1981-10-22 Régulateur de vitesse pour un train multiple continu à réglage par boucle

Country Status (5)

Country Link
EP (1) EP0056438B1 (fr)
AT (1) ATE18950T1 (fr)
DE (2) DE3101512A1 (fr)
ES (1) ES508834A0 (fr)
PT (1) PT74298B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994007618A1 (fr) * 1992-09-29 1994-04-14 Siemens Aktiengesellschaft Dispositif de regulation de la vitesse de rotation des cylindres d'un laminoir

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994007618A1 (fr) * 1992-09-29 1994-04-14 Siemens Aktiengesellschaft Dispositif de regulation de la vitesse de rotation des cylindres d'un laminoir

Also Published As

Publication number Publication date
ATE18950T1 (de) 1986-04-15
DE3101512A1 (de) 1982-08-26
DE3174254D1 (en) 1986-05-07
EP0056438B1 (fr) 1986-04-02
PT74298B (de) 1983-08-23
ES8301685A1 (es) 1983-01-01
EP0056438A3 (en) 1983-08-31
PT74298A (de) 1982-02-01
ES508834A0 (es) 1983-01-01

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