CN112224967B - Method and device for controlling tension of coiling machine and electronic equipment - Google Patents
Method and device for controlling tension of coiling machine and electronic equipment Download PDFInfo
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- CN112224967B CN112224967B CN202011088957.8A CN202011088957A CN112224967B CN 112224967 B CN112224967 B CN 112224967B CN 202011088957 A CN202011088957 A CN 202011088957A CN 112224967 B CN112224967 B CN 112224967B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
- B65H26/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs for variation in tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
- B65H18/10—Mechanisms in which power is applied to web-roll spindle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to a predetermined diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/173—Metal
Abstract
The invention discloses a tension control method, a tension control device and electronic equipment of a recoiling machine, which are applied to the recoiling of a large cold hard coil of a recoiling line, wherein the tension control method comprises the following steps: acquiring a real-time coil diameter value of a steel coil on the coiling machine in a current scanning period; when the real-time coil diameter value of the current scanning period is larger than a preset target value, acquiring a torque reduction value of the steel coil in the current scanning period based on the real-time coil diameter value of the current scanning period; and adjusting the tension set value of the coiling machine in the current scanning period based on the torque drop adjustment value of the current scanning period. The application solves the technical problems that in the prior art, the recoiling fault often occurs in the recoiling process of the recoiling line cold hard large coil, and the production rhythm is seriously influenced.
Description
Technical Field
The invention relates to the technical field of strip steel coiling, in particular to a tension control method and device of a coiling machine and electronic equipment.
Background
In the coiling process of a large cold-hard coil (more than 20 tons) of a cold-rolling heavy-coiling line, coiling faults often occur, the core-pulling rate of an inner ring exceeds 80%, and the production rhythm is seriously influenced.
The tower-shaped coil cannot be packaged, is difficult to hoist, has center deviation in the transportation process of the coil stripping trolley, has great potential safety hazard, and is influenced by a large amount of inner ring core-pulling coils to be smoothly and stably produced, so that great production pressure is brought to heavy coil lines, and the head and tail cutting after uncoiling causes great loss of yield due to recoiling.
Disclosure of Invention
The embodiment of the application provides a control method, a control device and electronic equipment for tension of a coiling machine, and solves the technical problems that coiling faults often occur in a cold and hard large coil of a heavy coiling line in a coiling process and production rhythm is seriously influenced in the prior art.
In a first aspect, the present application provides the following technical solutions through an embodiment of the present application:
a tension control method of a coiling machine is applied to coiling of a large cold and hard coil of a heavy coiling line, and comprises the following steps: acquiring a real-time coil diameter value of a steel coil on the coiling machine in a current scanning period; when the real-time coil diameter value of the current scanning period is larger than a preset target value, acquiring a torque reduction value of the steel coil in the current scanning period based on the real-time coil diameter value of the current scanning period; and adjusting the tension set value of the coiling machine in the current scanning period based on the torque drop adjustment value of the current scanning period.
In one embodiment, when the real-time coil diameter value of the current scanning period is greater than a preset target value, obtaining a torque drop value of the steel coil in the current scanning period based on the real-time coil diameter value of the current scanning period includes: based on equation Y X = -1.333Xn +1.1867, obtaining the torque drop of the steel coil in the current scanning periodAdjusting the value of, wherein Y X And Xn is the torque drop adjustment value of the current scanning period, and is the real-time roll diameter value of the current scanning period.
In one embodiment, adjusting the tension setting value of the coiler in the current scanning period based on the torque drop value of the current scanning period comprises: acquiring a torque actual value of the coiling machine in the current scanning period; acquiring a torque set value of the coiling machine in the current scanning period based on the torque drop adjustment value of the current scanning period; obtaining the tension adjustment quantity of the coiling machine in the current scanning period based on the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period; and adjusting the tension set value of the coiling machine in the current scanning period based on the tension adjustment amount of the current scanning period.
In one embodiment, the obtaining the tension adjustment amount of the reeling machine in the current scanning period based on the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period includes: and taking the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period as the input of a PI controller to obtain the tension adjustment amount of the coiler in the current scanning period, wherein the PI controller is Yn = Y (n-1) + Kp [ (1 +TA/TN) × YEn-YE (n-1) ], yn is the tension adjustment amount of the current scanning period, Y (n-1) is the tension adjustment amount of the previous scanning period, YEn is the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period, YE (n-1) is the deviation between the actual torque value of the previous scanning period and the set torque value of the previous scanning period, kp is the proportionality coefficient of the PI controller, TA is the scanning period, and TN is the integral time of the PI controller.
In one embodiment, while the torque drop adjustment value based on the current scanning period adjusts the tension set value of the coiler in the current scanning period, the method further includes: determining the range of the real-time volume diameter value of the current scanning period based on the real-time volume diameter value of the current scanning period; and adjusting the tension set value of the coiling machine in the current scanning period according to the range of the real-time coil diameter value of the current scanning period.
In an embodiment, the adjusting the tension set value of the coiling machine in the current scanning period according to the range of the real-time coil diameter value of the current scanning period includes: determining a tension coefficient according to the range of the real-time roll diameter value of the current scanning period; and obtaining a tension set value of the coiling machine in the current scanning period according to an equation F = m × F ', wherein F is the tension set value of the coiling machine in the current scanning period, F' is the tension initial set value of the coiling machine in the current scanning period, and m is a tension coefficient.
In an embodiment, the determining the tension coefficient according to the range of the real-time roll diameter value of the current scanning period includes: when the real-time roll diameter value of the current scanning period is larger than 610mm and smaller than 810mm, the tension coefficient m is 1.35; when the real-time roll diameter value of the current scanning period is greater than or equal to 810mm and less than or equal to 1100mm, the tension coefficient m is 1.2; when the real-time roll diameter value of the current scanning period is larger than 1100mm and smaller than 1800mm, wherein the tension coefficient m = -1/1400X +139/70; and when the real-time roll diameter value of the current scanning period is larger than or equal to 1800mm and smaller than or equal to 2100mm, the tension coefficient m is 0.7.
In a second aspect, the present application provides the following technical solutions according to an embodiment of the present application:
a coiler tension control device comprising: the acquiring unit is used for acquiring a real-time coil diameter value of a steel coil on the coiling machine in a current scanning period; an obtaining unit, configured to obtain a torque reduction value of the steel coil in the current scanning period based on the real-time coil diameter value of the current scanning period when the real-time coil diameter value of the current scanning period is greater than a preset target value; and the adjusting unit is used for adjusting the tension set value of the coiling machine in the current scanning period based on the torque drop value of the current scanning period.
In a third aspect, the present application provides the following technical solutions according to an embodiment of the present application:
an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements a method as in any of the above embodiments.
In a fourth aspect, the present application provides the following technical solutions according to an embodiment of the present application:
a computer-readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, carries out the method according to any one of the above embodiments.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
according to the tension control method for the recoiling machine, the real-time coil diameter value of the steel coil on the recoiling machine in the current scanning period is obtained, whether the real-time coil diameter value of the current scanning period is larger than a preset target value or not is judged, if the real-time coil diameter value of the current scanning period is larger than the preset target value, the steel coil currently recoiled by the recoiling machine is a large chilled coil of a recoiling line, at the moment, the torque drop value of the steel coil in the current scanning period is obtained according to the real-time coil diameter value of the current scanning period, and the tension set value of the recoiling machine in the current scanning period is adjusted based on the torque drop value, so that the torque reduction control of the recoiling machine is realized, and the technical problems that the recoiling fault frequently occurs in the recoiling process of the large chilled coil of the recoiling line and the production rhythm is seriously influenced in the prior art are solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a force analysis diagram during reeling by a reel-up;
FIG. 2 is a flow chart of a method for controlling tension in a coiler according to an embodiment of the present disclosure;
fig. 3 is a structural diagram of a tension control device of a coiler according to a second embodiment of the present application;
fig. 4 is an architecture diagram of an electronic device according to a third embodiment of the present application;
fig. 5 is an architecture diagram of a computer storage readable storage medium according to a fourth embodiment of the present application.
Detailed Description
The embodiment of the application provides a tension control method, a tension control device and electronic equipment for a coiling machine, and solves the technical problems that coiling faults often occur in the coiling process of a large cold and hard coil of a heavy coiling line in the prior art, and the production rhythm is seriously influenced.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
according to the tension control method for the recoiling machine, the real-time coil diameter value of the steel coil on the recoiling machine in the current scanning period is obtained, whether the real-time coil diameter value of the current scanning period is larger than a preset target value or not is judged, if the real-time coil diameter value of the current scanning period is larger than the preset target value, the steel coil currently recoiled by the recoiling machine is a large chilled coil of a recoiling line, at the moment, the torque drop value of the steel coil in the current scanning period is obtained according to the real-time coil diameter value of the current scanning period, and the tension set value of the recoiling machine in the current scanning period is adjusted based on the torque drop value, so that the torque reduction control of the recoiling machine is realized, and the technical problems that the recoiling fault frequently occurs in the recoiling process of the large chilled coil of the recoiling line and the production rhythm is seriously influenced in the prior art are solved.
In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the attached drawings of the specification and specific embodiments.
First, as shown in fig. 1, through the analysis of the force applied during the coiling process, the applicant found that in the normal coiling situation, the strip generates a torque (M) to the mandrel of the coiler under the tension (T), and assuming that the radius of the coil is R, when M = T × R, the torque is balanced by the friction resistance torque between the rubber sleeve and the mandrel.
However, along with the increase of the torque of the winding core, the tightening force of the inner ring strip steel on the rubber sleeve is also increased, and the rubber sleeve contracts under the action of the tightening force to extend outwards gradually along the direction of the inner ring strip steel, so that a gap between layers of the steel coil occurs, the friction force at the position is small, the layer staggering occurs under the pushing of the deviation rectifying hydraulic cylinder, the gap between the layers extends towards the outer ring gradually, a relatively uniform staggered layer is generated, and due to the staggered layer of the inner ring, the deviation of the strip steel cannot be effectively rectified by the deviation rectifying cylinder, so that the uniform staggered layer phenomenon corresponding to the inner ring is generated gradually on the outer ring, namely the phenomenon that the inner ring looses core, which is the coiling fault frequently generated in the coiling process of the recoiling line chilled large coil.
To solve the above problems, the applicant believes that, due to the inherent properties of the rubber sleeve, shrinkage under pressure is inevitable. The tiny contraction sometimes cannot cause practical influence, but if the contraction is obvious along with the increase of stress, the core pulling of the inner ring can be caused, and the core pulling of the large-coil coiling inner ring is easy to occur. In the prior art, a method of gradually reducing tension along with the increase of the roll diameter is generally adopted to realize the control of the torque amplitude during the winding. However, the operation characteristics of the rewinding line are that the start and stop are frequent, the speed variation range is large 20-200m/min, the fluctuation of the torque is large, and the smooth operation of the torque is difficult to realize. In view of the shortcomings of the prior art, the following improvements are made:
example one
As shown in fig. 2, the present embodiment provides a tension control method for a recoiling machine, which is applied to recoiling a large chilled coil of a heavy coiled wire, and the control method includes:
step S101: and acquiring a real-time coil diameter value Xn of a steel coil on the coiling machine in the current scanning period.
In a specific implementation process, the control method of this embodiment is applied to a PLC, and a scanning period refers to a time required by the PLC to perform one scanning operation. And the current scan period refers to a period in which the current scan operation is performed.
The manner of obtaining the real-time roll diameter value can be obtained by measuring the take-up speed by an encoder and then converting, which is well known to those skilled in the art and will not be described in detail herein.
As an alternative embodiment, step S101 includes:
acquiring an actual coil diameter value X of a steel coil on a coiling machine in a current scanning period;
and filtering the actual roll diameter value of the current scanning period to obtain a real-time roll diameter value Xn of the current scanning period.
As an optional embodiment, filtering the actual volume diameter value X in the current scanning period to obtain a real-time volume diameter value Xn in the current scanning period includes:
and filtering the actual volume diameter value of the current scanning period based on the equation Xn =0.001X +0.999Xn-1 to obtain the real volume diameter value of the current scanning period, wherein Xn is the real volume diameter value of the current scanning period, X is the actual volume diameter value of the current scanning period, and Xn-1 is the real volume diameter value of the previous scanning period.
In the embodiment, because the operation characteristics of the rewinding line are that the start and stop are frequent, the speed variation range is larger by 20-200m/min, or other system factors, the fluctuation of the actual roll diameter value X of the current scanning period obtained by collection is large, and the collected signal is very inaccurate, in the embodiment, the real-time roll diameter value Xn-1 of the previous scanning period is used for carrying out first-order filtering processing on the actual roll diameter value X of the current scanning period, so that the real-time roll diameter value Xn of the current scanning period is more accurate.
Step S102: when the real-time coil diameter value Xn of the current scanning period is larger than a preset target value, the torque drop value Y of the steel coil in the current scanning period is obtained based on the real-time coil diameter value Xn of the current scanning period X 。
The applicant finds that when the coil diameter of a steel coil on a coiling machine exceeds 1500mm, coiling failure occurs at high frequency, and meanwhile, the safety margin is considered, so that the preset target value is selected to be 1350-1400mm in the specific implementation process.
As an alternative embodiment, step S102 includes:
based on equation Y X = -1.333Xn +1.1867, obtaining the torque drop value of the steel coil in the current scanning period, wherein Y X And Xn is a real-time roll diameter value of the current scanning period.
The applicant finds that the general maximum coil diameter of the steel coil of the heavy coiling line is 2200mm, and when the adjustment range of the torque reduction adjustment value of the steel coil with the coil diameter of 2200mm is 10%, the coiling fault can be avoided, and the normal operation of the coiling process can be ensured, so that the ideal torque reduction adjustment value adjustment straight line can be obtained by taking the above as a reference to fit: y is X And (4) controlling the recoiling machine according to the adjusting straight line, wherein the = -1.333Xn +1.1867 can avoid the occurrence of a recoiling fault and ensure the normal operation of a recoiling process.
Step S103: torque down value Y based on current scanning period X And adjusting the tension set value of the coiling machine in the current scanning period.
As an alternative embodiment, step S103 includes:
acquiring a torque actual value of the recoiling machine in a current scanning period;
torque down-regulation value Y based on current scanning period X Acquiring a torque set value of the recoiling machine in the current scanning period, wherein in the specific implementation process, the torque set value of the current scanning period is an initial torque set value and a torque reduction adjustment value Y X Here, the initial torque set value is a torque value corresponding to a case where the winding diameter is 1350mm in the winding process of the parent winding control system.
Obtaining the tension adjustment quantity of the coiling machine in the current scanning period based on the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period;
and adjusting the tension set value of the coiling machine in the current scanning period based on the tension adjustment amount of the current scanning period.
As an alternative embodiment, obtaining the tension adjustment amount of the reeling machine in the current scanning period based on the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period includes:
the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period is used as the input of a PI controller to obtain the tension adjustment quantity of the coiling machine in the current scanning period,
the PI controller is Yn = Y (n-1) + Kp [ (1 + TA/TN) × YEn-YE (n-1) ], yn is the tension adjustment amount of the current scanning period, Y (n-1) is the tension adjustment amount of the previous scanning period, YEn is the deviation of the torque actual value of the current scanning period and the torque set value of the current scanning period, YE (n-1) is the deviation of the torque actual value of the previous scanning period and the torque set value of the previous scanning period, kp is the proportional coefficient of the PI controller, TA is the scanning period, and TN is the integral time of the PI controller.
In this embodiment, the PI controller introduces the deviation YE (n-1) between the actual torque value and the set torque value in the previous scanning period and the tension adjustment amount Y (n-1) in the previous scanning period, so that filtering is implemented before the tension adjustment amount Yn in the current scanning period is obtained, the influence of interference signals is filtered, and the tension adjustment amount Yn in the current scanning period is more accurate and stable.
As an alternative embodiment, kp is 0.001, TA is 1s, and TN is 30s.
In the embodiment, the winding diameter growth speed is considered to be low in the winding process, so that in order to realize stable adjustment, when the PI parameter is selected, the proportional coefficient Kp is selected to be a little smaller, the integral time TN is selected to be a little larger, and the scanning period TA is a little larger.
As an alternative embodiment, at the same time of step S103, the method further includes:
determining the range of the real-time roll diameter value of the current scanning period based on the real-time roll diameter value Xn of the current scanning period;
and adjusting the tension set value of the coiling machine in the current scanning period according to the range of the real-time coil diameter value of the current scanning period.
In this embodiment, for the steel coil on the coiling machine, no matter whether its real-time coil diameter value Xn is greater than the preset target value, still adopt along with the increase of coil diameter gradually turn down the tension method, specifically as follows:
as an optional embodiment, adjusting the tension set value of the coiling machine in the current scanning period according to the range of the real-time coil diameter value of the current scanning period includes:
determining a tension coefficient according to the range of the real-time roll diameter value of the current scanning period;
obtaining the tension set value of the coiling machine in the current scanning period according to the equation F = m × F',
wherein, F is the tension set value of the coiling machine in the current scanning period, F' is the tension initial set value of the coiling machine in the current scanning period, and m is the tension coefficient.
In the specific implementation process, the initial tension set value F' of the coiler in the current scanning period is the tension set value of the original coiling control system, and the value changes under the influence of factors such as steel types and specifications, so that the stable coiling operation is ensured, and the strip steel can not be broken. As an example, the set value is the product of unit tension, strip width and strip thickness.
As an alternative embodiment, determining the tension coefficient according to the range of the real-time roll diameter value of the current scanning period includes:
when the real-time roll diameter value of the current scanning period is larger than 610mm and smaller than 810mm, the tension coefficient m is 1.35;
when the real-time roll diameter value of the current scanning period is larger than or equal to 810mm and smaller than or equal to 1100mm, the tension coefficient m is 1.2;
when the real-time roll diameter value of the current scanning period is larger than 1100mm and smaller than 1800mm, wherein the tension coefficient m = -1/1400X +139/70;
and when the real-time roll diameter value of the current scanning period is larger than or equal to 1800mm and smaller than or equal to 2100mm, the tension coefficient m is 0.7.
The control effect of the coiling machine by the combination of tension reduction and torque reduction is good, the large coiling tower shape is completely controlled, the application effect is good, the coiling quality of the strip steel is guaranteed, tower shape coils are not generated, the stable operation of production can be kept, and the potential safety hazard is eliminated. Calculating the specific benefit: 1. direct benefit: the 5 months co-produce large rolls of about 90 rolls, amounting to about 2000 tons. Wherein, the failure rate is 80%, and the failure volume is about 70 volumes and about 1600 tons. Each roll is 0.5 ton in waste cutting amount. Annual benefit =70 × 0.5 × 2000 × 12 (scrap cut) +1600 × 35 × 12 (process energy consumption) =84 ten thousand yuan +67.2 ten thousand yuan =151.2 ten thousand yuan, and the annual direct economic benefit is about: 150 ten thousand yuan.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
according to the tension control method for the recoiling machine, the real-time coil diameter value of the steel coil on the recoiling machine in the current scanning period is obtained, whether the real-time coil diameter value of the current scanning period is larger than a preset target value or not is judged, if the real-time coil diameter value of the current scanning period is larger than the preset target value, the steel coil currently recoiled by the recoiling machine is a large chilled coil of a recoiling line, at the moment, the torque drop value of the steel coil in the current scanning period is obtained according to the real-time coil diameter value of the current scanning period, and the tension set value of the recoiling machine in the current scanning period is adjusted based on the torque drop value, so that the torque reduction control of the recoiling machine is realized, and the technical problems that the recoiling line large chilled coil in the recoiling process frequently generates coiling faults and the production rhythm is seriously influenced in the prior art are solved.
Example two
As shown in fig. 3, the present embodiment provides a tension control device for a coiler, which is applied to coiling a large chilled coil of a heavy coiled wire, the tension control device comprising:
an obtaining unit 201, configured to obtain a real-time coil diameter value of a steel coil on a coiling machine in a current scanning period;
the obtaining unit 202 is configured to obtain a torque reduction value of the steel coil in the current scanning period based on the real-time coil diameter value of the current scanning period when the real-time coil diameter value of the current scanning period is greater than a preset target value;
the adjusting unit 203 adjusts the tension set value of the coiler in the current scanning period based on the torque drop value in the current scanning period.
As an alternative embodiment, the obtaining unit 202 is specifically configured to:
based on equation Y X = -1.333Xn +1.1867, obtainThe torque of the steel coil in the current scanning period is reduced and adjusted, wherein Y X And Xn is the real-time roll diameter value of the current scanning period.
As an optional embodiment, the adjusting unit 203 is specifically configured to:
based on the torque drop adjustment value of the current scanning period, the tension set value of the coiling machine in the current scanning period is adjusted, and the method comprises the following steps:
acquiring a torque actual value of the coiling machine in a current scanning period;
acquiring a torque set value of the coiling machine in the current scanning period based on the torque down-regulation value of the current scanning period;
obtaining the tension adjustment quantity of the coiling machine in the current scanning period based on the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period;
and adjusting the tension set value of the coiling machine in the current scanning period based on the tension adjustment amount in the current scanning period.
As an optional embodiment, the adjusting unit 203 is specifically configured to:
the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period is used as the input of a PI controller to obtain the tension adjustment quantity of the coiling machine in the current scanning period,
the PI controller is Yn = Y (n-1) + Kp [ (1 + TA/TN) × YEn-YE (n-1) ], yn is the tension adjustment amount of the current scanning period, Y (n-1) is the tension adjustment amount of the previous scanning period, YEn is the deviation of the torque actual value of the current scanning period and the torque set value of the current scanning period, YE (n-1) is the deviation of the torque actual value of the previous scanning period and the torque set value of the previous scanning period, kp is the proportional coefficient of the PI controller, TA is the scanning period, and TN is the integral time of the PI controller.
As an alternative embodiment, kp is 0.001, TA is 1s, and TN is 30s.
As an optional embodiment, the obtaining unit 201 is specifically configured to:
acquiring an actual coil diameter value of a steel coil on a coiling machine in a current scanning period;
and filtering the actual volume diameter value of the current scanning period to obtain the real-time volume diameter value of the current scanning period.
As an optional embodiment, the obtaining unit 201 is specifically configured to:
filtering the actual volume diameter value of the current scanning period based on the equation Xn =0.001X +0.999Xn-1 to obtain the real-time volume diameter value of the current scanning period,
wherein Xn is the real-time volume diameter value of the current scanning period, X is the actual volume diameter value of the current scanning period, and Xn-1 is the real-time volume diameter value of the previous scanning period.
As an alternative embodiment, the control device further comprises: a tension adjustment unit for:
when the tension set value of the coiling machine in the current scanning period is adjusted based on the torque drop value of the current scanning period, the method also comprises the following steps:
determining the range of the real-time roll diameter value of the current scanning period based on the real-time roll diameter value of the current scanning period;
and adjusting the tension set value of the coiling machine in the current scanning period according to the range of the real-time coil diameter value of the current scanning period.
As an optional embodiment, the tension adjusting unit is specifically configured to:
determining a tension coefficient according to the range of the real-time roll diameter value of the current scanning period;
obtaining the tension set value of the coiling machine in the current scanning period according to the equation F = m × F',
wherein, F is the tension set value of the coiling machine in the current scanning period, F' is the tension initial set value of the coiling machine in the current scanning period, and m is the tension coefficient.
As an optional embodiment, the tension adjusting unit is specifically configured to:
when the real-time roll diameter value of the current scanning period is larger than 610mm and smaller than 810mm, the tension coefficient m is 1.35;
when the real-time roll diameter value of the current scanning period is larger than or equal to 810mm and smaller than or equal to 1100mm, the tension coefficient m is 1.2;
when the real-time roll diameter value of the current scanning period is larger than 1100mm and smaller than 1800mm, wherein the tension coefficient m = -1/1400X +139/70;
and when the real-time roll diameter value of the current scanning period is larger than or equal to 1800mm and smaller than or equal to 2100mm, the tension coefficient m is 0.7.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the tension control device for the recoiling machine, provided by the embodiment of the application, obtains the real-time coil diameter value of the steel coil on the recoiling machine in the current scanning period, and judges whether the real-time coil diameter value of the current scanning period is larger than a preset target value, if so, the steel coil currently recoiled by the recoiling machine is a large chilled coil of a recoiling line, at the moment, the torque drop and adjustment value of the steel coil in the current scanning period is obtained according to the real-time coil diameter value of the current scanning period, and the tension set value of the recoiling machine in the current scanning period is adjusted based on the torque drop and adjustment value, so that the torque reduction control of the recoiling machine is realized, and the technical problems that the production rhythm is seriously influenced due to the frequent coiling faults in the recoiling process of the large chilled coil of the recoiling line in the prior art are solved.
EXAMPLE III
Based on the same inventive concept, as shown in fig. 4, the present embodiment provides an electronic device 300, which includes a memory 310, a processor 320 and a computer program 311 stored in the memory 310 and running on the processor 320, and when the processor 320 executes the program 311, the following method steps can be implemented:
acquiring a real-time coil diameter value of a steel coil on a coiling machine in a current scanning period; when the real-time coil diameter value of the current scanning period is larger than a preset target value, acquiring a torque reduction and adjustment value of the steel coil in the current scanning period based on the real-time coil diameter value of the current scanning period; and adjusting the tension set value of the coiling machine in the current scanning period based on the torque drop adjustment value in the current scanning period.
In a specific implementation, when the processor 320 executes the program 311, any method steps in the first embodiment may also be implemented.
Example four
Based on the same inventive concept, as shown in fig. 5, the present embodiment provides a computer-readable storage medium 400, on which a computer program 411 is stored, the computer program 411 implementing the following steps when being executed by a processor:
acquiring a real-time coil diameter value of a steel coil on a coiling machine in a current scanning period; when the real-time coil diameter value of the current scanning period is larger than a preset target value, acquiring a torque reduction value of the steel coil in the current scanning period based on the real-time coil diameter value of the current scanning period; and adjusting the tension set value of the coiling machine in the current scanning period based on the torque drop adjustment value in the current scanning period.
In a specific implementation, the computer program 411, when executed by a processor, may implement the method steps of the second embodiment.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A tension control method of a coiling machine is characterized in that the tension control method is applied to coiling of a large cold and hard coil of a heavy coiling wire, and comprises the following steps:
obtaining a real-time coil diameter value of a steel coil on the coiling machine in a current scanning period, and the method comprises the following steps: acquiring an actual coil diameter value X of a steel coil on a coiling machine in a current scanning period; based on the equation Xn =0.001X +0.999Xn-1, filtering the actual volume diameter value of the current scanning period to obtain a real-time volume diameter value of the current scanning period, wherein Xn is the real-time volume diameter value of the current scanning period, X is the actual volume diameter value of the current scanning period, and Xn-1 is the real-time volume diameter value of the previous scanning period; the scanning period refers to the time required by the PLC to execute one scanning operation;
when the real-time coil diameter value of the current scanning period is greater than a preset target value, obtaining a torque reduction value of the steel coil in the current scanning period based on the real-time coil diameter value of the current scanning period, including: based on equation Y X = -1.333Xn +1.1867, obtaining the torque drop value of the steel coil in the current scanning period, wherein Y X The torque drop adjustment value of the current scanning period is obtained, and Xn is a real-time roll diameter value of the current scanning period;
and adjusting the tension set value of the coiling machine in the current scanning period based on the torque drop adjustment value of the current scanning period.
2. The method for controlling tension of a reel-up according to claim 1, wherein adjusting the tension setting value of the reel-up in the current scanning period based on the torque down-regulation value of the current scanning period comprises:
acquiring a torque actual value of the coiler in the current scanning period;
acquiring a torque set value of the coiling machine in the current scanning period based on the torque drop adjustment value of the current scanning period;
obtaining the tension adjustment quantity of the coiling machine in the current scanning period based on the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period;
and adjusting the tension set value of the coiling machine in the current scanning period based on the tension adjustment amount of the current scanning period.
3. The method for controlling tension of a winding machine according to claim 2, wherein the obtaining of the tension adjustment amount of the winding machine in the current scanning period based on the deviation between the actual value of the torque in the current scanning period and the set value of the torque in the current scanning period comprises:
taking the deviation between the actual torque value of the current scanning period and the set torque value of the current scanning period as the input of a PI controller to obtain the tension adjustment amount of the coiler in the current scanning period,
the PI controller is Yn = Y (n-1) + Kp [ (1 + TA/TN) × YEn-YE (n-1) ], yn is a tension adjustment amount of the current scanning period, Y (n-1) is a tension adjustment amount of the previous scanning period, YEn is a deviation between a torque actual value of the current scanning period and a torque set value of the current scanning period, YE (n-1) is a deviation between a torque actual value of the previous scanning period and a torque set value of the previous scanning period, kp is a proportionality coefficient of the PI controller, TA is the scanning period, and TN is an integration time of the PI controller.
4. The method for controlling tension of a reel-up according to claim 1, wherein while the torque drop value based on the current scanning period adjusts the tension set value of the reel-up in the current scanning period, the method further comprises:
determining the range of the real-time volume diameter value of the current scanning period based on the real-time volume diameter value of the current scanning period;
and adjusting the tension set value of the coiling machine in the current scanning period according to the range of the real-time coil diameter value of the current scanning period.
5. The method for controlling tension of a recoiling machine according to claim 4, wherein the adjusting the tension set value of the recoiling machine in the current scanning period according to the range of the real-time coil diameter value of the current scanning period comprises:
determining a tension coefficient according to the range of the real-time roll diameter value of the current scanning period;
obtaining the tension set value of the coiling machine in the current scanning period according to an equation F = m × F',
and F is a tension set value of the coiling machine in the current scanning period, F' is a tension initial set value of the coiling machine in the current scanning period, and m is a tension coefficient.
6. The method for controlling tension of a winding machine according to claim 5, wherein the determining the tension coefficient according to the range of the real-time winding diameter value of the current scanning period comprises:
when the real-time roll diameter value of the current scanning period is larger than 610mm and smaller than 810mm, the tension coefficient m is 1.35;
when the real-time roll diameter value of the current scanning period is greater than or equal to 810mm and less than or equal to 1100mm, the tension coefficient m is 1.2;
when the real-time roll diameter value of the current scanning period is larger than 1100mm and smaller than 1800mm, wherein the tension coefficient m = -1/1400X +139/70;
and when the real-time roll diameter value of the current scanning period is larger than or equal to 1800mm and smaller than or equal to 2100mm, the tension coefficient m is 0.7.
7. A control device for tension in a coiler, comprising:
the obtaining unit is used for obtaining the real-time coil diameter value of the steel coil on the coiling machine in the current scanning period, and comprises: acquiring an actual coil diameter value X of a steel coil on a coiling machine in a current scanning period; based on an equation Xn =0.001X +0.999Xn-1, filtering the actual volume diameter value of the current scanning period to obtain a real-time volume diameter value of the current scanning period, wherein Xn is the real-time volume diameter value of the current scanning period, X is the actual volume diameter value of the current scanning period, and Xn-1 is the real-time volume diameter value of the previous scanning period; the scanning period refers to the time required by the PLC to execute one scanning operation;
an obtaining unit, configured to obtain a torque drop value of the steel coil in the current scanning period based on the real-time coil diameter value of the current scanning period when the real-time coil diameter value of the current scanning period is greater than a preset target value, where the obtaining unit includes: based on equation Y X And = 1.333xn +1.1867, obtaining the torque drop value of the steel coil in the current scanning period, wherein,Y X the torque reduction value of the current scanning period is obtained, and Xn is the real-time roll diameter value of the current scanning period;
and the adjusting unit is used for adjusting the tension set value of the coiling machine in the current scanning period based on the torque drop value of the current scanning period.
8. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the method of any of claims 1-6.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-6.
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| CN101423153B (en) * | 2008-11-27 | 2010-09-29 | 大连橡胶塑料机械股份有限公司 | Constant tension center coiling control system |
| CN103072841B (en) * | 2013-01-09 | 2015-04-01 | 安徽马钢工程技术集团有限公司 | Tension roll control device for plate and strip processing line and tension control method |
| CN103170524B (en) * | 2013-03-18 | 2014-12-10 | 中冶南方（武汉）自动化有限公司 | Turntable type high-speed reeling machine control method and system of cold continuous rolling production line |
| CN103521551B (en) * | 2013-10-31 | 2015-11-11 | 武汉钢铁(集团)公司 | The coil of strip coil diameter defining method of uncoiler or coiling machine in a kind of steel rolling process |
| CN104492825B (en) * | 2014-12-02 | 2017-04-26 | 首钢京唐钢铁联合有限责任公司 | Segmented control method and device for hot-rolled coiling tensile stresses |
| CN106256734B (en) * | 2016-08-26 | 2018-09-18 | 首钢京唐钢铁联合有限责任公司 | The tension control method of coiling machine |
| CN106743894B (en) * | 2016-11-18 | 2018-12-14 | 首钢京唐钢铁联合有限责任公司 | A kind of tension control method of uncoiler |
| CN109848247B (en) * | 2017-11-30 | 2021-01-08 | 上海梅山钢铁股份有限公司 | Cold-rolled strip steel coiling tension control method and control device thereof |
| CN111346926A (en) * | 2020-03-03 | 2020-06-30 | 首钢京唐钢铁联合有限责任公司 | Control method for roll bending force of temper mill |
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