CN104289558A - Strip steel processing line uncoiling area tension control method - Google Patents
Strip steel processing line uncoiling area tension control method Download PDFInfo
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- CN104289558A CN104289558A CN201410581578.0A CN201410581578A CN104289558A CN 104289558 A CN104289558 A CN 104289558A CN 201410581578 A CN201410581578 A CN 201410581578A CN 104289558 A CN104289558 A CN 104289558A
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- uncoiler
- adjustment factor
- torque
- torque controller
- acceleration
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Abstract
The invention discloses a strip steel processing line uncoiling area tension control method which comprises the following steps: (1) receiving the yield strength and thickness parameters of the operating strip steel on a processing line by a PLC; (2) setting the uncoiler torque control parameter Qn of the PLC according to the previous parameters; and (3) controlling an uncoiler torque controller by setting a regulation coefficient A to be a minimum value when the strip steel on the processing line operates at constant speed, increasing the regulation coefficient A of all uncoiler torque controllers when the strip steel is decelerated, and setting the regulation coefficient A of all the uncoiler torque controllers to be a maximum value when the accelerated speed of the accelerated and decelerated strip steel exceeds the acceleration change dead space range. According to the method disclosed by the invention, the tension of the uncoiler can be stable, the influence of tension oscillation on the product quality is avoided, and the method can be widely applied to the technical field of strip steel production.
Description
Technical field
The present invention relates to technical field of steel strip production, refer to a kind of strip processing line uncoiling district tension control method particularly.
Background technology
Along with the exploitation of high-strength steel kind; process line is when production rolling think gauge high-strength steel; because uncoiler regulable control does not mate with uncoiler mechanical system; uncoiler region strip tension on process line is caused to occur oscillatory occurences; cause belt steel product of poor quality; can cause time serious shutting down steel scrap, have a strong impact on normally carrying out of process line production, bring very large economic loss.
Summary of the invention
Object of the present invention is exactly will provide a kind of and ensure uncoiler tension stability, avoid tension force to vibrate on the strip processing line uncoiling district tension control method of product quality impact.
For achieving the above object, strip processing line uncoiling district tension control method designed by the present invention, comprises the steps: 1) PLC (Programmable Logic Controller programmable logic controller (PLC)) receives the yield strength of operating band steel and thickness parameter on process line; 2) according to the uncoiler Torque Control parameter Q of aforementioned parameters setting PLC
n: Q
n=Q
n-1+ A*GAIN* (T
0/ T
n) * (DEV
n+ DEV
n-1)/2, wherein, Q
n: be the output of the uncoiler torque controller of sampling instant n, Q
n-1: be the output of the uncoiler torque controller of sampling instant n-1, T
0: program scanning time, T
n: the time of integration, GAIN: gain scale coefficient, A: adjustment factor, DEV
n: be the uncoiler torque difference N of sampling instant n
m, described torque difference N
m=given moment-actual moment, DEV
n-1: be the uncoiler torque difference N of sampling instant n-1
m, described torque difference N
m=given moment-actual moment; 3) when process line being with steel constant-speed operation, by adjustment factor A being set as minimum of a value controls uncoiler torque controller; When being with steel to be in acceleration and deceleration, tune up all uncoiler torque controller adjustment factor A; When the band steel acceleration being in acceleration and deceleration exceedes acceleration change dead zone range, all uncoiler torque controller adjustment factor A are set to maximum.
Preferably, described step 3) in, when being with steel to be in acceleration and deceleration, the uncoiler torque controller adjustment factor A value the closer to jockey pulley is larger, and the uncoiler torque controller adjustment factor A value more away from jockey pulley is less.
Further, described step 3) in, the span of uncoiler torque controller adjustment factor A is 0.7-1.
Again further, described step 3) in, uncoiler has two, is respectively No. 1 uncoiler and No. 2 uncoilers, and wherein, No. 1 uncoiler is near jockey pulley, and No. 2 uncoilers are away from jockey pulley; When process line being with steel constant-speed operation, two uncoiler adjustment factor A are set as that minimum of a value is 0.7; When being with steel to be in acceleration and deceleration, the uncoiler torque controller adjustment factor A that No. 1 uncoiler is corresponding is the adjustment factor A value of the uncoiler torque controller that 1, No. 2 uncoilers are corresponding is 0.9; When band steel acceleration exceedes acceleration change dead zone range, adjustment factor A is set to 1.
Also further, described step 3) in, the acceleration change dead zone range value near the uncoiler torque controller of jockey pulley is little, and the acceleration change dead zone range value away from the uncoiler torque controller of jockey pulley is large.
Further, acceleration change dead zone range is 0.02m/s
2-0.08m/s
2.
Further, described step 2) in, Q
nand Q
n-1output area be 0-1, T
0the program scanning time is 1-15ms, T
nthe time of integration is 5-15s, GAIN gain scale coefficient is 9*10
-6-18*10
-6.
Operation principle of the present invention is such: be with steel yield strength (to be greater than 400N/mm according on process line
2) and finished product thickness (being greater than 2mm), as the judgement process mark of the think gauge high-strength steel of correspondence.Again according to the tracking signal completion logic chain function of band steel, thus meet uncoiler requirements for automatic control.
The control of all the other seven uncoilers under normal circumstances except the principal velocity uncoiler of region is Torque Control, and it can solve the technical controlling problem that strip tension regulates.Uncoiler torque controller for think gauge high-strength steel is controlled by PLC, the strip tension achieving adjustment factor guiding controls automatically, by changing the size of uncoiler torque controller adjustment factor A, realize uncoiler torque controller to mate with the control between mechanical system, meet the requirement of band steel Controlling Technology.By calculating and actual debugging, determine the controling parameters of the uncoiler moment except the principal velocity uncoiler of region.
Uncoiler Torque Control parameter Q except the principal velocity uncoiler of region
nalgorithm is as follows:
Q
n＝Q
n-1+A*GAIN*(T
0/T
n)*(DEV
n+DEV
n-1)/2，
Wherein,
Q
n: be the output (0-1) of the uncoiler torque controller of sampling instant n,
Q
n-1: be the output (0-1) of the uncoiler torque controller of sampling instant n-1,
T
0: the program scanning time (1-15ms),
T
n: the time of integration (5-15s),
GAIN: gain scale coefficient (9*10
-6-18*10
-6),
A: adjustment factor (0.7-1),
DEV
n: be the uncoiler torque difference N of sampling instant n
m, described torque difference N
m=given moment-actual moment,
DEV
n-1: be the uncoiler torque difference N of sampling instant n-1
m, described torque difference N
m=given moment-actual moment.
The moment that the adjustment factor A that uncoiler transmission device transmits according to PLC control chip adjusts uncoiler exports, thus the size of uncoiler region strip tension on adjustment process line, ensure that the stable of strip tension on process line.
When setting uncoiler torque controller adjustment factor A, following two aspects need be considered:
1, logical relation:
When process line being with steel constant-speed operation, uncoiler normally controls, and adjustment factor A is set as minimum of a value 0.7.When process line being with steel to be in acceleration and deceleration state and acceleration exceedes acceleration change dead zone range, all uncoiler torque controller adjustment factor A are set to maximum " 1 ", thus change the Torque Control of uncoiler, both ensure that the normal control of uncoiler, tension force oscillation problem when simultaneously solving again acceleration and deceleration, and ensure that belt steel product quality.Acceleration change dead zone range is specifically debugged according to device characteristics and is determined.
2, adjustment factor A sets:
Adjustment factor A value when being with steel constant-speed operation is 0.7, when being with steel to be in acceleration and deceleration, tune up all uncoiler torque controller adjustment factor A, wherein, uncoiler torque controller adjustment factor A value the closer to jockey pulley is larger, uncoiler torque controller adjustment factor A value more away from jockey pulley is less, and the concrete numerical value of adjustment factor A that each uncoiler is corresponding depends on uncoiler drive apparatus and uncoiler characteristic separately; Acceleration change dead zone range can according to circumstances be selected to determine, the acceleration change dead zone range value of the general uncoiler torque controller near jockey pulley is little, acceleration change dead zone range value away from the uncoiler torque controller of jockey pulley is large, concrete numerical value needs bonding apparatus process debugging to determine, term of reference is 0.02m/s
2-0.08m/s
2.
In sum, the invention has the advantages that:
1, when producing think gauge high-strength steel, achieving uncoiler and automatically controlling, solve the problems such as the tension force vibration that on process line, uncoiler region occurs, decrease the cancel closedown time.
2, ensure that the control of uncoiler is normal, not only ensure that the control of uncoiler during acceleration and deceleration, and the automatic control of uncoiler when also ensure that stable state, avoid due to the damage of tension force vibration to plant equipment; And the product quality problem greatly reduced because tension force oscillatory occurences during acceleration and deceleration causes, rationally solve the rapidity of uncoiler control and the relation of stability, ensure that the normal control to uncoiler.
3, decrease fault time, improve product percent of pass.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of strip processing line uncoiling district of the present invention tension control method.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
See Fig. 1, strip processing line uncoiling district of the present invention tension control method, comprises the steps:
1) PLC receives yield strength and the thickness parameter of operating band steel on process line;
2) according to the uncoiler Torque Control parameter Q of aforementioned parameters setting PLC
n:
Q
n＝Q
n-1+A*GAIN*(T
0/T
n)*(DEV
n+DEV
n-1)/2，
Wherein,
Q
n: be the output (0-1) of the uncoiler torque controller of sampling instant n,
Q
n-1: be the output (0-1) of the uncoiler torque controller of sampling instant n-1,
T
0: the program scanning time (1-15ms),
T
n: the time of integration (5-15s),
GAIN: gain scale coefficient (9*10
-6-18*10
-6),
A: adjustment factor (0.7-1),
DEV
n: be the uncoiler torque difference N of sampling instant n
m, described torque difference N
m=given moment-actual moment,
DEV
n-1: be the uncoiler torque difference N of sampling instant n-1
m, described torque difference N
m=given moment-actual moment;
3) when process line being with steel constant-speed operation, by adjustment factor A being set as minimum of a value controls uncoiler torque controller; When being with steel to be in acceleration and deceleration, tune up all uncoiler torque controller adjustment factor A; When the band steel acceleration being in acceleration and deceleration exceedes acceleration change dead zone range, all uncoiler torque controller adjustment factor A are set to maximum.
Wherein, described step 3) in, when being with steel to be in acceleration and deceleration, the uncoiler torque controller adjustment factor A value the closer to jockey pulley is larger, and the uncoiler torque controller adjustment factor A value more away from jockey pulley is less.In the present embodiment, the span of uncoiler torque controller adjustment factor A is 0.7-1, concrete adjustment numerical value is as follows: the uncoiler except the principal velocity uncoiler of region has two, be respectively No. 1 uncoiler and No. 2 uncoilers, wherein, No. 1 uncoiler is near jockey pulley, and No. 2 uncoilers are away from jockey pulley; When process line being with steel constant-speed operation, two uncoiler adjustment factor A are set as that minimum of a value is 0.7; When being with steel to be in acceleration and deceleration, the uncoiler torque controller adjustment factor A that No. 1 uncoiler is corresponding is the adjustment factor A value of the uncoiler torque controller that 1, No. 2 uncoilers are corresponding is 0.9; When band steel acceleration exceedes acceleration change dead zone range, adjustment factor A is set to 1.Specifically see table 1.
Adjustment factor A setting data when think gauge high-strength steel produced by table 1
| Uncoiler | Coefficient A during constant speed | Coefficient A during acceleration and deceleration |
| No. 1 uncoiler | 0.7 | 0.9 |
| No. 2 uncoilers | 0.7 | 1 |
Described step 3) in, the acceleration change dead zone range value near the uncoiler torque controller of jockey pulley is little, and the acceleration change dead zone range value away from the uncoiler torque controller of jockey pulley is large.In the present embodiment, described acceleration change dead zone range is 0.02m/s
2-0.08m/s
2.
Operation principle of the present invention is as described below: be with steel yield strength (to be greater than 400N/mm according on process line
2) and finished product thickness (being greater than 2mm), as the judgement process mark of the think gauge high-strength steel of correspondence.Again according to the tracking signal completion logic chain function of band steel, thus meet uncoiler requirements for automatic control.
The control of all the other two uncoilers under normal circumstances except the principal velocity uncoiler of region is Torque Control, and it can solve the technical controlling problem that strip tension regulates.Uncoiler torque controller for think gauge high-strength steel is controlled by PLC, the strip tension achieving adjustment factor A guiding controls automatically, by changing the size of uncoiler torque controller adjustment factor A, realize uncoiler torque controller to mate with the control between mechanical system, meet the requirement of band steel Controlling Technology.By calculating and actual debugging, determine the controling parameters of the uncoiler moment except the principal velocity uncoiler of region.
Uncoiler Torque Control parameter Q except the principal velocity uncoiler of region
nalgorithm is as follows:
Q
n＝Q
n-1+A*GAIN*(T
0/T
n)*(DEV
n+DEV
n-1)/2，
Wherein,
Q
n: be the output (0-1) of the uncoiler torque controller of sampling instant n,
Q
n-1: be the output (0-1) of the uncoiler torque controller of sampling instant n-1,
T
0: the program scanning time (1-15ms),
T
n: the time of integration (5-15s),
GAIN: gain scale coefficient (9*10
-6-18*10
-6),
A: adjustment factor (0.7-1),
DEV
n: be the uncoiler torque difference N of sampling instant n
m, described torque difference N
m=given moment-actual moment,
DEV
n-1: be the uncoiler torque difference N of sampling instant n-1
m, described torque difference N
m=given moment-actual moment.
The moment that the adjustment factor A that uncoiler transmission device transmits according to PLC control chip adjusts uncoiler exports, thus the size of uncoiler region strip tension on adjustment process line, ensure that the stable of strip tension on process line.
When setting uncoiler torque controller adjustment factor A, following two aspects need be considered:
1, logical relation:
When process line being with steel constant-speed operation, uncoiler normally controls, and adjustment factor A is set as minimum of a value 0.7.When process line being with steel to be in acceleration and deceleration state and acceleration exceedes acceleration change dead zone range, all uncoiler torque controller adjustment factor A are set to maximum " 1 ", thus change the Torque Control of uncoiler, both ensure that the normal control of uncoiler, tension force oscillation problem when simultaneously solving again acceleration and deceleration, and ensure that belt steel product quality.Acceleration change dead zone range is specifically debugged according to device characteristics and is determined.
2, adjustment factor A sets:
Adjustment factor A value when being with steel constant-speed operation is 0.7, when being with steel to be in acceleration and deceleration, tune up all uncoiler torque controller adjustment factor A, wherein, uncoiler torque controller adjustment factor A value the closer to jockey pulley is larger, uncoiler torque controller adjustment factor A value more away from jockey pulley is less, and the concrete numerical value of adjustment factor A that each uncoiler is corresponding depends on uncoiler drive apparatus and uncoiler characteristic separately; Acceleration change dead zone range can according to circumstances be selected to determine, the acceleration change dead zone range value of the general No. 1 uncoiler torque controller near jockey pulley is little, acceleration change dead zone range value away from No. 2 uncoiler torque controllers of jockey pulley is large, concrete numerical value needs bonding apparatus process debugging to determine, term of reference is 0.02m/s
2-0.08m/s
2.
Control device involved by strip processing line uncoiling district of the present invention tension control method is as follows:
The PLC of the present embodiment adopts Corfu moral company HPC (High Performance Controller) high performance controller, and control signal passage is CAN232.Uncoiler transmission controls to adopt ALSPA MD2000, and model is: MD2000-029-205006.Involved by uncoiling district tension control method, algorithm routine calculates uncoiler Torque Control value, and this value acts on uncoiler driving motor by point-to-point form, eventually through to the tension adjustment with steel on the control realization process line of unwinder device.
Claims (7)
1. a strip processing line uncoiling district tension control method, is characterized in that: comprise the steps:
1) PLC receives yield strength and the thickness parameter of operating band steel on process line;
2) according to the uncoiler Torque Control parameter Q of aforementioned parameters setting PLC
n:
Q
n＝Q
n-1+A*GAIN*(T
0/T
n)*(DEV
n+DEV
n-1)/2，
Wherein,
Q
n: be the output of the uncoiler torque controller of sampling instant n,
Q
n-1: be the output of the uncoiler torque controller of sampling instant n-1,
T
0: the program scanning time,
T
n: the time of integration,
GAIN: gain scale coefficient,
A: adjustment factor,
DEV
n: be the uncoiler torque difference N of sampling instant n
m, described torque difference N
m=given moment-actual moment,
DEV
n-1: be the uncoiler torque difference N of sampling instant n-1
m, described torque difference N
m=given moment-actual moment;
3) when process line being with steel constant-speed operation, by adjustment factor A being set as minimum of a value controls uncoiler torque controller; When being with steel to be in acceleration and deceleration, tune up all uncoiler torque controller adjustment factor A; When the band steel acceleration being in acceleration and deceleration exceedes acceleration change dead zone range, all uncoiler torque controller adjustment factor A are set to maximum.
2. strip processing line uncoiling district according to claim 1 tension control method, it is characterized in that: described step 3) in, when being with steel to be in acceleration and deceleration, uncoiler torque controller adjustment factor A value the closer to jockey pulley is larger, and the uncoiler torque controller adjustment factor A value more away from jockey pulley is less.
3. strip processing line uncoiling district according to claim 2 tension control method, is characterized in that: described step 3) in, the span of uncoiler torque controller adjustment factor A is 0.7-1.
4. strip processing line uncoiling district according to claim 3 tension control method, is characterized in that: described step 3) in, uncoiler has two, be respectively No. 1 uncoiler and No. 2 uncoilers, wherein, No. 1 uncoiler is near jockey pulley, and No. 2 uncoilers are away from jockey pulley; When process line being with steel constant-speed operation, two uncoiler adjustment factor A are set as that minimum of a value is 0.7; When being with steel to be in acceleration and deceleration, the uncoiler torque controller adjustment factor A that No. 1 uncoiler is corresponding is the adjustment factor A value of the uncoiler torque controller that 1, No. 2 uncoilers are corresponding is 0.9; When band steel acceleration exceedes acceleration change dead zone range, adjustment factor A is set to 1.
5. strip processing line uncoiling district according to any one of claim 1 to 4 tension control method, it is characterized in that: described step 3) in, acceleration change dead zone range value near the uncoiler torque controller of jockey pulley is little, and the acceleration change dead zone range value away from the uncoiler torque controller of jockey pulley is large.
6. strip processing line uncoiling district according to claim 5 tension control method, is characterized in that: acceleration change dead zone range is 0.02m/s
2-0.08m/s
2.
7. strip processing line uncoiling district according to any one of claim 1 to 4 tension control method, is characterized in that: described step 2) in, Q
nand Q
n-1output area be 0-1, T
0the program scanning time is 1-15ms, T
nthe time of integration is 5-15s, GAIN gain scale coefficient is 9*10
-6-18*10
-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410581578.0A CN104289558B (en) | 2014-10-27 | 2014-10-27 | Strip processing line uncoiling district tension control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410581578.0A CN104289558B (en) | 2014-10-27 | 2014-10-27 | Strip processing line uncoiling district tension control method |
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| Publication Number | Publication Date |
|---|---|
| CN104289558A true CN104289558A (en) | 2015-01-21 |
| CN104289558B CN104289558B (en) | 2016-07-20 |
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ID=52309637
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105039677A (en) * | 2015-08-28 | 2015-11-11 | 武汉钢铁(集团)公司 | Control method for restart of strip steel processing line furnace area after shutdown |
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| EP1068908A2 (en) * | 1999-07-02 | 2001-01-17 | Inoxfil S.A. | Mechanism for unwinding a wire from a roll packed inside a container |
| DE10236337B3 (en) * | 2002-08-08 | 2004-03-04 | Emil Jäger GmbH & Co KG | Spool device used as a buffer/intermediate store for wire comprises connecting devices mounted/controlled so that they always create a gap between two central shaft sections |
| CN101541462A (en) * | 2006-10-24 | 2009-09-23 | 林肯环球公司 | Wire tensioning arrangement |
| CN103072841A (en) * | 2013-01-09 | 2013-05-01 | 安徽马钢工程技术有限公司 | Tension roll control device for plate and strip processing line and tension control method |
-
2014
- 2014-10-27 CN CN201410581578.0A patent/CN104289558B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2661118A1 (en) * | 1990-04-20 | 1991-10-25 | Rozenblit Sa | Method and device for winding off a reel of wire and machines for manufacturing springs made of wire |
| EP1068908A2 (en) * | 1999-07-02 | 2001-01-17 | Inoxfil S.A. | Mechanism for unwinding a wire from a roll packed inside a container |
| DE10236337B3 (en) * | 2002-08-08 | 2004-03-04 | Emil Jäger GmbH & Co KG | Spool device used as a buffer/intermediate store for wire comprises connecting devices mounted/controlled so that they always create a gap between two central shaft sections |
| CN101541462A (en) * | 2006-10-24 | 2009-09-23 | 林肯环球公司 | Wire tensioning arrangement |
| CN103072841A (en) * | 2013-01-09 | 2013-05-01 | 安徽马钢工程技术有限公司 | Tension roll control device for plate and strip processing line and tension control method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105039677A (en) * | 2015-08-28 | 2015-11-11 | 武汉钢铁(集团)公司 | Control method for restart of strip steel processing line furnace area after shutdown |
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|---|---|
| CN104289558B (en) | 2016-07-20 |
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Effective date of registration: 20170213 Address after: 430080 Wuhan, Hubei Qingshan District, Heping Avenue, No. 1244 Patentee after: General Electric (Wuhan) Automation Co., Ltd. Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |