CN104858244A - Loop control method capable of ensuring tension stability of strip steel processing line - Google Patents
Loop control method capable of ensuring tension stability of strip steel processing line Download PDFInfo
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- CN104858244A CN104858244A CN201510313746.2A CN201510313746A CN104858244A CN 104858244 A CN104858244 A CN 104858244A CN 201510313746 A CN201510313746 A CN 201510313746A CN 104858244 A CN104858244 A CN 104858244A
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- Prior art keywords
- loop
- adjustment factor
- control method
- acceleration
- steel
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- 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
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- Mechanical Engineering (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The invention discloses a loop control method capable of ensuring tension stability of a strip steel processing line. The loop control method comprises the following steps of step1, controlling a chip to receive and process yield strength and thickness parameters of operation strip steel in the processing line; step2, setting the adjustment parameter Qn of loop winching torque according to the above parameter control chip; step3, setting a minimum value as an adjustment coefficient A when operating the strip steel on the processing line at constant speed; when the strip steel is accelerated and decelerated, increasing the adjustment coefficient A corresponding to the loop winch; when the accelerated speed of the accelerated and decelerated strip steel is beyond the change dead zone range of the accelerated speed, setting the adjustment coefficient A of the loop winch as a maximum value. According to the loop control method, the loop can be precisely controlled during deceleration and acceleration, and tension deviation in the loop area can be solved, the strip steel processing line can be normally produced, the quality of the strip steel product is improved, and thus the loop control method can be widely applied to the control field of the strip steel processing line.
Description
Technical field
The present invention relates to strip processing line control field, particularly relate to a kind of loop control method ensureing to process tape steel tension stability.
Background technology
Along with the exploitation of high-strength steel kind; process line is when production rolling think gauge high-strength steel; because adjustment of loop controls not mate with kink mechanical system; kink 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
The object of the invention is the deficiency in order to overcome above-mentioned background technology, a kind of loop control method ensureing to process tape steel tension stability is provided, there is the accurate control of kink when guaranteeing acceleration and deceleration, solve the tension fluctuation phenomenon in kink region, ensure that the feature of belt steel product quality is normally produced, improved to strip processing line.
A kind of loop control method ensureing process tape steel tension stability provided by the invention, comprises the steps: that step one, control chip receive yield strength and the thickness parameter of operating band steel on process line; Step 2, according to aforementioned parameters control chip setting loop winding torque adjusting parameter: Q
n=Q
n-1+ A*GAIN* (T
0/ T
n) * (DEV
n+ DEV
n-1+ DEV
n-2)/3
,wherein, Q
n: be the output of the loop winding torque controller of sampling instant n, Q
n-1: be the output of the loop winding torque controller of sampling instant n-1, T
0: be the program scanning time, T
n: the time of integration, GAIN: proportionality coefficient, A: adjustment factor, DEV
n: be the loop winding torque difference Nm of sampling instant n, described torque difference Nm=given moment-actual moment, DEV
n-1: be the loop winding torque difference Nm of sampling instant n-1, described torque difference Nm=given moment-actual moment, DEV
n-2: be the loop winding torque difference Nm of sampling instant n-2, described torque difference Nm=given moment-actual moment; Step 3, when process line is with steel constant-speed operation time, by adjustment factor A is set as minimum of a value; When being with steel to be in acceleration and deceleration, tune up the adjustment factor A that all loop windings are corresponding; When the band steel acceleration being in acceleration and deceleration exceedes acceleration change dead zone range, the adjustment factor A of all loop windings is set to maximum.
In technique scheme, in described step 3, when being with steel to be in acceleration and deceleration, adjustment factor A value the closer to the kink of uncoiler is less, and it is larger the closer to the adjustment factor A value of the kink of coiling machine, the adjustment factor A value of the kink corresponding with uncoiler is minimum, and the adjustment factor A value of the kink corresponding with coiling machine is maximum.
In technique scheme, in described step 3, the span of adjustment factor A is 0.7-1.
In technique scheme, in described step 3, loop winding has two, is respectively the 1# loop winding and 2# loop winding that are arranged in order, and wherein, 1# loop winding is near uncoiler, and 2# loop winding is near coiling machine; When process line being with steel constant-speed operation, the adjustment factor A of two loop windings is set as that minimum of a value is 0.7; When being with steel be in acceleration and deceleration and do not exceed acceleration change dead zone range, the adjustment factor A that 1# loop winding is corresponding is the adjustment factor A value that 0.9,2# loop winding is corresponding is 1; When band steel acceleration exceedes acceleration change dead zone range, adjustment factor A is set to 1.
In technique scheme, in described step 3, acceleration change dead zone range value the closer to uncoiler is larger, and acceleration change dead zone range value more close to coiling machine is less, the acceleration change dead zone range value corresponding with uncoiler is maximum, and the acceleration change dead zone range value corresponding with coiling machine is minimum.
In technique scheme, described acceleration change dead zone range is 0.02m/s
2-0.08m/s
2.
In technique scheme, in described step 2, 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 proportionality coefficient is 9*10
-6-18*10
-6.
The present invention ensures the loop control method processing tape steel tension stability, there is following beneficial effect: the moment of the torque adjusting parameter adjustment loop winding that loop winding transmission device transmits according to control chip exports, thus kink region strip tension size on control treatment line, when using this technology to produce think gauge high-strength steel, ensure that the accurate control of loop winding when acceleration and deceleration and stable state, solve the problems such as the tension force vibration in kink region on process line, avoid due to the damage of tension force vibration to plant equipment, ensure that the steady production of process line, decrease the cancel closedown time, rationally solve the rapidity of tower-loop control and the relation of stability, ensure that the normal operation of loop winding, avoid because tension force vibration is on the problem of product quality impact.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the present invention ensures the loop control method processing tape steel tension stability.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail, but this embodiment should not be construed as limitation of the present invention.
See Fig. 1, the present invention ensures the loop control method processing tape steel tension stability, comprises the steps:
Step one, control chip receive yield strength and the thickness parameter of operating band steel on process line;
Step 2, according to aforementioned parameters control chip setting loop winding torque adjusting parameter:
Q
n＝Q
n-1+A*GAIN*(T
0/T
n)*(DEV
n+DEV
n-1+DEV
n-2)/3，
Wherein,
Q
n: be the output (0-1) of the loop winding torque controller of sampling instant n,
Q
n-1: be the output (0-1) of the loop winding torque controller of sampling instant n-1,
T
0: be program scanning time (1-15ms),
T
n: the time of integration (5-15s),
GAIN: proportionality coefficient (9*10
-6-18*10
-6),
A: adjustment factor,
DEV
n: be the loop winding torque difference Nm of sampling instant n, described torque difference Nm=given moment-actual moment,
DEV
n-1: be the loop winding torque difference Nm of sampling instant n-1, described torque difference Nm=given moment-actual moment,
DEV
n-2: be the loop winding torque difference Nm of sampling instant n-2, described torque difference Nm=given moment-actual moment;
Step 3, when process line is with steel constant-speed operation time, by adjustment factor A is set as minimum of a value; When being with steel to be in acceleration and deceleration, tune up the adjustment factor A that all loop windings are corresponding; When the band steel acceleration being in acceleration and deceleration exceedes acceleration change dead zone range, the adjustment factor A of all loop windings is set to maximum.
Wherein, in described step 3, when being with steel to be in acceleration and deceleration, adjustment factor A value the closer to the kink of uncoiler is less, and it is larger the closer to the adjustment factor A value of the kink of coiling machine, the adjustment factor A value of the kink corresponding with uncoiler is minimum, the adjustment factor A value of the kink corresponding with coiling machine is maximum, in the present embodiment, the span of adjustment factor A is 0.7-1, concrete numerical value is as follows: described loop winding has two, be respectively the 1# loop winding and 2# loop winding that are arranged in order, wherein, 1# loop winding is near uncoiler, 2# loop winding is near coiling machine, when process line being with steel constant-speed operation, the adjustment factor A of two loop windings is set as that minimum of a value is 0.7, when being with steel be in acceleration and deceleration and do not exceed acceleration change dead zone range, the adjustment factor A that 1# loop winding is corresponding is the adjustment factor A value that 0.9,2# loop winding is corresponding is 1, when band steel acceleration exceedes acceleration change dead zone range, adjustment factor A is set to 1.Specifically see table 1.
Data when think gauge high-strength steel produced by table 1 before and after adjustment factor A acceleration and deceleration time delay
| Kink | Coefficient A during constant speed | Coefficient A during acceleration and deceleration |
| 1# kink | 0.7 | 0.9 |
| 2# kink | 0.7 | 1 |
In described step 3, acceleration change dead zone range value the closer to uncoiler is larger, and acceleration change dead zone range value more close to coiling machine is less, the acceleration change dead zone range value corresponding with uncoiler is maximum, the acceleration change dead zone range value corresponding with coiling machine is minimum, 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), mark completes corresponding think gauge high-strength steel judgement process alternatively; Again according to the tracking signal completion logic chain function of band steel, thus meet automatic loop control requirement.
The control of loop winding is Torque Control under normal circumstances, and it can solve the technical controlling problem that strip tension regulates.Achieve adjustment factor strip tension for think gauge high-strength steel tower-loop control by computer automatically to control, by changing the size of loop winding adjustment factor A, realize adjustment of loop to control to mate with the control between kink mechanical system, meet the requirement of band steel Controlling Technology.By calculating and actual debugging, determine the regulating parameter of loop winding moment.
Control chip setting loop winding torque adjusting device parameter algorithm is as follows:
Q
n＝Q
n-1+A*GAIN*(T
0/T
n)*(DEV
n+DEV
n-1+DEV
n-2)/3，
Wherein,
Q
n: be the output (0-1) of the loop winding torque controller of sampling instant n,
Q
n-1: be the output (0-1) of the loop winding torque controller of sampling instant n-1,
T
0: be program scanning time (1-15ms),
T
n: the time of integration (5-15s),
GAIN: proportionality coefficient (9*10
-6-18*10
-6),
A: adjustment factor,
DEV
n: be the loop winding torque difference Nm of sampling instant n, described torque difference Nm=given moment-actual moment,
DEV
n-1: be the loop winding torque difference Nm of sampling instant n-1, described torque difference Nm=given moment-actual moment,
DEV
n-2: be the loop winding torque difference Nm of sampling instant n-2, described torque difference Nm=given moment-actual moment.
The moment of the torque adjusting parameter adjustment loop winding that loop winding transmission device transmits according to control chip exports, thus kink region strip tension size on adjustment process line.
When setting the adjustment factor A of loop winding Torque Control, following two aspects need be considered:
1, control logic relation:
When process line being with steel constant-speed operation, loop winding normally controls.When steel acceleration and deceleration being with by process line and acceleration change dead zone range exceedes certain value, acceleration and deceleration flag bit state is placed in " 1 ", drop into variable coefficient loop winding to control, both ensure that the normal control of loop winding, 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, term of reference is 0.02m/s
2-0.08m/s
2.
2, adjustment factor A setting principle:
Adjustment factor A selected value when being with steel constant-speed operation is 0.7, higher value is got during acceleration and deceleration, 1# loop winding value near uncoiler is less, 2# loop winding value near coiling machine is comparatively large, and the concrete numerical value of each loop winding adjustment factor A depends on the characteristic of this kink drive apparatus and loop winding.Acceleration change dead zone range can according to circumstances be selected to determine, the general 1# loop winding value near uncoiler is comparatively large, and the 2# loop winding value near coiling machine is less, and concrete numerical value needs bonding apparatus process debugging to determine.
The present invention ensures that the hardware unit involved by loop control method processing tape steel tension stability is as follows:
The computer that the present embodiment adopts is completed by HPC (High PerformanceController, the high performance controller) controller of Corfu moral company, control signal channel C AN232; Kink transmission controls to adopt ALSPA MD2000, and model is: MD2000-029-205006.The loop winding Torque Control value calculated acts on kink driving motor by point-to-point form by controller algorithm program, by controlling loop equipment thus realizing regulating the tension force with steel on process line.
After using this technical scheme, effect is as follows:
Achieve loop winding automatically to control, solve the problems such as the tension force vibration in kink region on process line, decrease the cancel closedown time.
Ensure that the control of loop winding is normal, not only ensure that the control of loop winding during acceleration and deceleration, and the automatic control of loop winding when also ensure that stable state, greatly reduce the oscillatory occurences because tension fluctuation during acceleration and deceleration causes and product quality problem, and avoid the normal impact controlled.
Decrease fault time, improve product percent of pass.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
The content be not described in detail in this description belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
1. ensure the loop control method processing tape steel tension stability, it is characterized in that: comprise the steps:
Step one, control chip receive yield strength and the thickness parameter of operating band steel on process line;
Step 2, according to aforementioned parameters control chip setting loop winding torque adjusting parameter:
Q
n＝Q
n-1+A*GAIN*(T
0/T
n)*(DEV
n+DEV
n-1+DEV
n-2)/3，
Wherein,
Q
n: be the output of the loop winding torque controller of sampling instant n,
Q
n-1: be the output of the loop winding torque controller of sampling instant n-1,
T
0: be the program scanning time,
T
n: the time of integration,
GAIN: proportionality coefficient,
A: adjustment factor,
DEV
n: be the loop winding torque difference Nm of sampling instant n, described torque difference Nm=given moment-actual moment,
DEV
n-1: be the loop winding torque difference Nm of sampling instant n-1, described torque difference Nm=given moment-actual moment,
DEV
n-2: be the loop winding torque difference Nm of sampling instant n-2, described torque difference Nm=given moment-actual moment;
Step 3, when process line is with steel constant-speed operation time, by adjustment factor A is set as minimum of a value; When being with steel to be in acceleration and deceleration, tune up the adjustment factor A that all loop windings are corresponding; When the band steel acceleration being in acceleration and deceleration exceedes acceleration change dead zone range, the adjustment factor A of all loop windings is set to maximum.
2. the loop control method ensureing process tape steel tension stability according to claim 1, it is characterized in that: in described step 3, when being with steel to be in acceleration and deceleration, adjustment factor A value the closer to the kink of uncoiler is less, and it is larger the closer to the adjustment factor A value of the kink of coiling machine, the adjustment factor A value of the kink corresponding with uncoiler is minimum, and the adjustment factor A value of the kink corresponding with coiling machine is maximum.
3. the loop control method ensureing process tape steel tension stability according to claim 2, it is characterized in that: in described step 3, the span of adjustment factor A is 0.7-1.
4. the loop control method ensureing process tape steel tension stability according to claim 3, it is characterized in that: in described step 3, loop winding has two, be respectively the 1# loop winding and 2# loop winding that are arranged in order, wherein, 1# loop winding is near uncoiler, and 2# loop winding is near coiling machine; When process line being with steel constant-speed operation, the adjustment factor A of two loop windings is set as that minimum of a value is 0.7; When being with steel be in acceleration and deceleration and do not exceed acceleration change dead zone range, the adjustment factor A that 1# loop winding is corresponding is the adjustment factor A value that 0.9,2# loop winding is corresponding is 1; When band steel acceleration exceedes acceleration change dead zone range, adjustment factor A is set to 1.
5. the loop control method ensureing process tape steel tension stability according to claim 4, it is characterized in that: in described step 3, acceleration change dead zone range value the closer to uncoiler is larger, and acceleration change dead zone range value more close to coiling machine is less, the acceleration change dead zone range value corresponding with uncoiler is maximum, and the acceleration change dead zone range value corresponding with coiling machine is minimum.
6. the loop control method ensureing process tape steel tension stability according to claim 5, is characterized in that: described acceleration change dead zone range is 0.02m/s
2-0.08m/s
2.
7. the loop control method ensureing process tape steel tension stability according to any one of claim 1 to 6, is characterized in that: in described step 2, 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 proportionality coefficient is 9*10
-6-18*10
-6.
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|---|---|---|---|
| CN201510313746.2A CN104858244A (en) | 2015-06-09 | 2015-06-09 | Loop control method capable of ensuring tension stability of strip steel processing line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510313746.2A CN104858244A (en) | 2015-06-09 | 2015-06-09 | Loop control method capable of ensuring tension stability of strip steel processing line |
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| Publication Number | Publication Date |
|---|---|
| CN104858244A true CN104858244A (en) | 2015-08-26 |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812792A (en) * | 2017-10-11 | 2018-03-20 | 河钢股份有限公司 | A kind of accuracy control method of wire and rod continuous rolling tension force |
| CN110773584A (en) * | 2019-10-19 | 2020-02-11 | 涿州北方重工设备设计有限公司 | Method and system for controlling internal tension of double-loop of production line |
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|---|---|---|---|---|
| JPH0768308A (en) * | 1993-09-01 | 1995-03-14 | Nippon Steel Corp | Tension controlling method |
| JPH07246410A (en) * | 1994-03-08 | 1995-09-26 | Toshiba Corp | Controller for rolling mill |
| CN102430591A (en) * | 2011-10-13 | 2012-05-02 | 山西太钢不锈钢股份有限公司 | Loop control method of special thick steel at low temperature |
| CN103920720A (en) * | 2013-01-14 | 2014-07-16 | 宝山钢铁股份有限公司 | Strip steel tension dynamic control method based on loop quantity deviation and control system using strip steel tension dynamic control method |
| CN103990652A (en) * | 2014-05-19 | 2014-08-20 | 山西太钢不锈钢股份有限公司 | Movable sleeve control method for pipeline steel |
| CN104338756A (en) * | 2014-10-27 | 2015-02-11 | 武汉钢铁(集团)公司 | Tension roller control method for ensuring stability of tension of strip steel on processing line |
-
2015
- 2015-06-09 CN CN201510313746.2A patent/CN104858244A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768308A (en) * | 1993-09-01 | 1995-03-14 | Nippon Steel Corp | Tension controlling method |
| JPH07246410A (en) * | 1994-03-08 | 1995-09-26 | Toshiba Corp | Controller for rolling mill |
| CN102430591A (en) * | 2011-10-13 | 2012-05-02 | 山西太钢不锈钢股份有限公司 | Loop control method of special thick steel at low temperature |
| CN103920720A (en) * | 2013-01-14 | 2014-07-16 | 宝山钢铁股份有限公司 | Strip steel tension dynamic control method based on loop quantity deviation and control system using strip steel tension dynamic control method |
| CN103990652A (en) * | 2014-05-19 | 2014-08-20 | 山西太钢不锈钢股份有限公司 | Movable sleeve control method for pipeline steel |
| CN104338756A (en) * | 2014-10-27 | 2015-02-11 | 武汉钢铁(集团)公司 | Tension roller control method for ensuring stability of tension of strip steel on processing line |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107812792A (en) * | 2017-10-11 | 2018-03-20 | 河钢股份有限公司 | A kind of accuracy control method of wire and rod continuous rolling tension force |
| CN110773584A (en) * | 2019-10-19 | 2020-02-11 | 涿州北方重工设备设计有限公司 | Method and system for controlling internal tension of double-loop of production line |
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Application publication date: 20150826 |