CN115846420A - Control method and device for cold-rolled strip and electronic equipment - Google Patents
Control method and device for cold-rolled strip and electronic equipment Download PDFInfo
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- CN115846420A CN115846420A CN202211436884.6A CN202211436884A CN115846420A CN 115846420 A CN115846420 A CN 115846420A CN 202211436884 A CN202211436884 A CN 202211436884A CN 115846420 A CN115846420 A CN 115846420A
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Abstract
The invention discloses a control method and a control device for a cold-rolled strip and electronic equipment, wherein the method is applied to a cold-rolling mill, the cold-rolling mill comprises a coiler, and the method comprises the following steps: acquiring the set tension of a coiler; determining the thickness coupling start tension of the recoiling machine based on the set tension and a preset thickness coupling tension coefficient, wherein the thickness coupling tension coefficient is determined based on the thickness of the strip steel; determining a given tension of the coiler based on the thickness coupling start tension and the set tension; bringing the given tension into a preset current calculation model, and determining a first target current of the coiling machine; and controlling the current of the coiler to rise from an initial value to a first target current so as to complete the strip steel sheet building. The given tension of the coiling machine is adjusted according to the thickness of the strip steel, so that the given tension meets the requirements of strip steel with different thicknesses for starting, and various fault conditions caused by insufficient given tension for starting are solved.
Description
Technical Field
The invention relates to the technical field of cold rolling production, in particular to a method and a device for controlling a cold-rolled strip and electronic equipment.
Background
Rolling is a main process for deforming the plate strip, hot rolling raw materials are reduced to the thickness of a finished product through multi-pass cold rolling reduction, and for a reversible rolling mill, the start operation is required for each pass of cold rolling. The cold rolling and starting process of the plate strip is from a static state to an unstable state and then to a stable rolling state. In the process of starting up, parameters such as rolling speed, tension, rolling force, roll gap and the like fluctuate sharply, and the phenomena of low-tension deviation, tension loss and belt breakage, high-tension stretch breaking and the like are easy to occur. In order to effectively improve the stability of the start-up rolling of the cold-rolled sheet strip, the invention of the method for controlling the tension of the cold-rolled sheet strip is very necessary.
Disclosure of Invention
The embodiment of the application provides a control method and a control device for a cold-rolled sheet strip and electronic equipment, and the given tension of a coiling machine is adjusted according to the thickness of the strip steel, so that the given tension meets the requirements of the strip steel with different thicknesses for starting, various fault conditions caused by insufficient starting given tension are favorably solved, and the starting and rolling stability of the cold-rolled sheet strip is improved.
In a first aspect, the present invention provides the following technical solutions through an embodiment of the present invention:
a method of controlling a cold rolled strip for use in a cold rolling mill, the cold rolling mill including a coiler, the method comprising: acquiring the set tension of the coiler; determining the thickness coupling start tension of the coiling machine based on the set tension and a preset thickness coupling tension coefficient, wherein the thickness coupling tension coefficient is determined based on the thickness of the strip steel; determining a given tension of the coiler based on the thickness-coupled start-up tension and the set tension; bringing the given tension into a preset current calculation model, and determining a first target current of the coiling machine; and controlling the current of the coiler to rise from an initial value to the first target current so as to finish the strip steel sheet building.
Preferably, the preset current calculation model is: i = (T × R × (10/I)) × (b/100) × g; wherein I is the first target current, T is the given tension, R is the radius of the cold-rolled steel coil, I is the motor transmission ratio of the coiler, b is the torque current of the coiler, and g is the gravity acceleration.
Preferably, the cold rolling mill further comprises a continuous rolling mill, the continuous rolling mill is connected with the coiling machine, and after the strip steel is built and tensioned, the continuous rolling mill further comprises: acquiring the rolling speed of the continuous rolling mill; and determining the outlet coiling speed of the coiling machine according to the rolling speed so that the coiling machine coils the strip steel based on the outlet coiling speed.
Preferably, the determining the outlet coiling speed of the coiler according to the rolling speed comprises: if the rolling speed is less than or equal to a preset rolling speed, determining that the outlet coiling speed is equal to the product of the rolling speed and a preset thickness coupling speed gain, wherein the thickness coupling speed gain is determined based on the thickness of the strip steel; and if the rolling speed is higher than the preset rolling speed, determining that the outlet coiling speed is equal to the product of the rolling speed and the product of the sum of an actual forward slip value and 1, and determining the actual forward slip value based on the relative difference value of the actual running speed and the rolling speed of the strip steel.
Preferably, the preset rolling speed is between 25mpm and 30mpm.
Preferably, the thickness coupling speed gain is between 1.0 and 1.15.
Preferably, the cold rolling mill further comprises a continuous rolling mill, the continuous rolling mill is connected with the coiling machine, and after the strip steel is built and tensioned, the continuous rolling mill further comprises: updating the given tension based on the set tension and a thickness control adjustment tension, wherein the thickness control adjustment tension is determined based on a thickness adjustment amount and a preset thickness influence coefficient; introducing the updated given tension into the preset current calculation model to determine a second target current of the coiling machine; and controlling the current of the coiling machine to be equal to the second target current so as to finish the start tension control.
Preferably, the predetermined thickness coupling tension coefficient is between-0.2 and 0.6.
In a second aspect, the present invention provides the following technical solutions through an embodiment of the present invention:
a control apparatus for cold rolled strip comprising:
the first acquisition module is used for acquiring the set tension of the coiling machine;
the start tension obtaining module is used for determining the thickness coupling start tension of the coiling machine based on the set tension and a preset thickness coupling tension coefficient, and the thickness coupling tension coefficient is determined based on the thickness of the strip steel;
the given tension obtaining module is used for determining the given tension of the coiling machine based on the thickness coupling start tension and the set tension;
the target current determining module is used for bringing the given tension into a preset current calculation model and determining a first target current of the coiling machine;
and the first control module is used for controlling the current of the coiling machine to rise from an initial value to the first target current so as to complete the strip steel sheet building.
In a third aspect, the present invention provides the following technical solutions through an embodiment of the present invention:
an electronic device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method of any of the preceding first aspects when executing the program.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the control method of the cold-rolled sheet strip provided by the embodiment of the invention is applied to a cold-rolling mill, the cold-rolling mill comprises a coiler, and the method comprises the following steps: acquiring the set tension of the coiling machine, and operating to build tension; obtaining the thickness coupling start tension of the coiler based on the set tension and a preset thickness coupling tension coefficient; coupling the start tension and the set tension based on the thickness to obtain the given tension; bringing the given tension into a preset current calculation model, and calculating to obtain a first target current of the coiling machine; when the coiler current rises from the initial value to the first target current, the sheet building is completed. According to the method, the thickness is coupled with the lifting tension, so that the given tension meets the lifting requirements of the strip steel with different thicknesses, the instant deviation problem caused by insufficient lifting given tension is solved, the breaking problem caused by overlarge set tension is solved, and the construction of Zhang Guocheng is completed. The method can stabilize the cold rolling and start-up process of the sheet strip, avoid the influence of the different strip steel thicknesses on the cold rolling process, and realize the smooth and stable rolling of the cold-rolled sheet strip.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description 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 flowchart of a method for controlling a cold-rolled strip according to an embodiment of the present invention;
FIG. 2 is a flow chart of tension control provided by an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a control device for cold-rolled strips according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The embodiment of the application provides a control method and a control device for a cold-rolled sheet strip and electronic equipment, and the given tension of a coiling machine is adjusted according to the thickness of the sheet strip, so that the given tension meets the requirements of starting the sheet strips with different thicknesses, various fault conditions caused by insufficient starting given tension are solved, and the stability of starting and rolling the cold-rolled sheet strip is improved.
The technical scheme of the embodiment of the application has the following general idea:
a control method of a cold-rolled strip, applied in a cold-rolling mill comprising a coiler, the method comprising: acquiring the set tension of the coiler; determining the thickness coupling start tension of the coiling machine based on the set tension and a preset thickness coupling tension coefficient, wherein the thickness coupling tension coefficient is determined based on the thickness of the strip steel; determining a given tension of the coiler based on the thickness-coupled start-up tension and the set tension; bringing the given tension into a preset current calculation model, and determining a first target current of the coiling machine; and controlling the current of the coiler to rise from an initial value to the first target current so as to finish the strip steel sheet building.
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.
In a first aspect, an embodiment of the present invention provides a method for controlling a cold-rolled sheet strip, specifically, as shown in fig. 1, the method includes the following steps S101 to S105.
Step S101, acquiring the set tension of the coiling machine;
step S102, determining the thickness coupling start tension of the coiler based on the set tension and a preset thickness coupling tension coefficient, wherein the thickness coupling tension coefficient is determined based on the thickness of the strip steel;
step S103, determining a given tension of the coiling machine based on the thickness coupling start tension and the set tension;
step S104, bringing the given tension into a preset current calculation model, and determining a first target current of the coiling machine;
and S105, controlling the current of the coiler to rise from an initial value to the first target current so as to complete strip steel sheet building.
Specifically, the tension is set to a set value, which may be input manually or obtained from the control result of the previous time by the cold rolling mill. And after the set tension of the coiling machine is obtained, the tension building operation is carried out.
In the specific implementation process, the thickness coupling start tension of the coiling machine is determined based on the set tension and the preset thickness coupling tension coefficient, and the method comprises the following steps: and multiplying the set tension by the thickness coupling tension coefficient to obtain the thickness coupling start tension. The thickness coupling tension coefficient can be determined according to the thickness of the strip steel, and different coefficients are obtained in different thickness ranges. For example, the predetermined thickness coupling tension coefficient is between-0.2 and 0.6 according to the thickness range of different steel strips.
For example: when the thickness range of the plate strip is [0.05mm,0.15mm ], the thickness coupling tension coefficient is 0.3; the thickness range of the plate and strip is (0.15mm, 0.25mm), the thickness coupling tension coefficient is 0.21, the thickness range of the plate and strip is (0.25mm, 0.4mm, the thickness coupling tension coefficient is 0.08, the thickness range of the plate and strip is (0.4mm, 0.8mm), the thickness coupling tension coefficient is 0.03, and when the thickness of the plate and strip is more than 0.8mm, the thickness coupling tension coefficient is-0.07.
Then, the set tension of the coiler is obtained based on the thickness coupling start tension and the set tension. Specifically, the set tension and the thickness coupling start tension are summed to obtain the given tension. The thickness coupling start tension can represent the influence quantity of the strip steel thickness on the start tension.
In the actual control process, because there is the control error problem, can also carry out manual error adjustment to tension according to actual need, promptly on setting for tension and thickness coupling draw the basis of summing, increase manual regulation tension for given tension = and sets for tension + thickness coupling draw tension + manual regulation tension.
And (4) bringing the given tension into a preset current calculation model, and calculating to obtain a first target current of the coiler. Specifically, the preset current calculation model is: i = (T × R × (10/I)) × (b/100) × g;
wherein I is a first target current, 10 -1 A; t is given tension, 10kg; r is the radius of the cold-rolled steel coil, 10 -1 mm; i is the motor transmission ratio of the coiling machine; b is the torque current of the coiler, 10 -1 A; g is the acceleration of gravity.
The radius of the cold-rolled steel coil, the motor transmission ratio of the coiler and the torque current of the coiler can be obtained through detection, so that the first target current can be determined when the given tension is determined.
After the first target current is obtained through calculation, when the actual current of the coiling machine rises from the initial value 0 to reach the first target current, the tension building is completed, and the tension is opened.
Therefore, in the tension building process, the strip steel thickness is used for coupling the start-up tension, so that the given tension of the coiling machine reaches the start-up requirements of the strip steels with different thicknesses, the instant deviation problem caused by insufficient start-up given tension is solved, and the breakage problem caused by overlarge set tension is solved.
In a specific embodiment, the cold rolling mill further includes a tandem mill, the tandem mill is connected to the coiler, as shown in fig. 2, after the tension of the strip is built, the cold rolling mill further includes: acquiring the rolling speed of the continuous rolling mill; and determining the outlet coiling speed of the coiler according to the rolling speed so that the coiler can coil the strip steel based on the outlet coiling speed.
Specifically, when the start of the continuous rolling mill is detected, the rolling speed of the continuous rolling mill is acquired, and the determining of the outlet coiling speed of the coiler according to the rolling speed comprises the following steps: if the rolling speed (namely the rolling speed) is less than or equal to the preset rolling speed, determining that the outlet coiling speed is equal to the product of the rolling speed and the preset thickness coupling speed gain, wherein the thickness coupling speed gain is determined based on the thickness of the strip steel; and if the rolling speed is greater than the preset rolling speed, determining that the outlet coiling speed is equal to the product of the actual forward slip value and the rolling speed after summing 1, wherein the actual forward slip value is determined based on the relative difference between the actual running speed and the rolling speed of the strip steel.
Considering the difference of forward slip at different speeds, compensating the rolling speed based on the thickness coupling speed gain under the condition that the rolling speed is less than or equal to the preset rolling speed to obtain the outlet coiling speed; and under the condition that the rolling speed is greater than the preset rolling speed, compensating the rolling speed by applying the actual forward slip value to obtain the outlet coiling speed.
The thickness coupling speed gain can be determined according to the thickness of the strip steel, different gains are obtained in different thickness ranges, and the different gains mean different forward slip values corresponding to different strip steel thicknesses. For example, the thickness coupling speed gain is between 1.0 and 1.15 according to different strip thickness ranges.
Specifically, when the rolling speed of the rolling mill is less than or equal to the preset rolling speed c mpm, c is a set constant, and the outlet coiling speed = the rolling speed × the thickness coupling speed gain. When the rolling mill rolling speed > c mpm, c is a set constant, and the outlet coiling speed = rolling speed × (1 + actual forward slip value). The actual forward slip value may be equal to ((actual strip running speed — rolling speed)/rolling speed) × 100%, where the actual strip running speed may be measured by a tachometer. The preset rolling speed here may be, for example, between 25mpm and 30mpm.
In conclusion, in the operation start-up process, the speed gain is coupled by applying the thickness of the strip steel, so that the outlet coiling speed of the coiling machine corresponds to the thickness of the strip steel, the coiling speed influences the tension of the coiling machine, the tension reduction amplitude of the coiling machine is reduced, and the problems of tension loss and strip breakage during start-up are solved.
In the embodiment, as shown in fig. 2, after the strip steel is expanded, the method further includes: updating the given tension based on the set tension and the thickness control adjustment tension, wherein the thickness control adjustment tension is determined based on the thickness adjustment amount and a preset thickness influence coefficient; bringing the updated given tension into a preset current calculation model to determine a second target current of the coiling machine; and controlling the actual current of the coiler to be equal to the second target current so as to realize the differential control of the tension of the coiler at different rolling speeds. Wherein the thickness regulating quantity is the difference between the actual thickness of the strip steel and the target thickness of the strip steel; the thickness influence coefficient is a set value and represents the influence coefficient of the tension on the thickness, and the specific size can be determined according to the actual situation.
Specifically, after the operation of the vehicle start, the tension is adjusted and set based on the thickness control, and the given tension obtained based on the thickness coupling vehicle start tension is updated to obtain the updated given tension.
In the actual control process, because there is the control error problem, can also carry out manual error adjustment to tension according to actual need, on the basis that set for tension and thickness control adjustment tension sum promptly, increase manual regulation tension for given tension = set tension + thickness control adjustment tension + manual regulation tension.
And introducing the updated given tension into a preset current calculation model, determining a second target current of the coiler, and controlling the actual current of the coiler to be equal to the second target current after the second target current is obtained through calculation so as to realize the difference control of the tension of the coiler at different rolling speeds, wherein the tension is in an open state.
Therefore, after the start operation is carried out, the thickness coupling start tension is cancelled, the given tension is obtained by adjusting the tension based on the thickness control, the high-speed and low-speed tension difference control is realized, and the high-speed rolling stability is ensured.
To facilitate understanding of the present solution, specific implementation examples are given below:
[ build tension control ]
1. And after the set parameters are sent, the sheet is built through operation.
2. The thickness coupling start tension = set tension multiplied by the thickness coupling tension coefficient =122.5kg multiplied by 0.21=25.725kg, wherein the thickness coupling tension coefficient is-0.2-0.6, different coefficients are taken in different thickness ranges, the outlet thickness =0.17mm, and the thickness coupling tension coefficient =0.21;
3. given tension = set tension + manually adjusted tension + thickness coupled lift tension =122.5kg +0+25.725kg =148.2kg;
4. and (3) bringing the given tension into a preset current calculation model, and calculating a first target current of the coiling machine: i = (T × R × (10/I)) × (b/100) × g = (1482 × (13837/20000) × (10/2.952)) × (155/100) × 0.98=5275;
wherein:
i-target current, 10-1A;
t-given tension, 10kg;
r is the radius of the steel coil, and is 10-1mm;
i-motor transmission ratio of the coiler; b-Torque Current of coiler, 10-1A; g-acceleration of gravity;
5. when the coiler current rises from 0 to the first target current 527.5A, the build-up is complete and the tension is opened.
[ controlling of vehicle-lifting speed ]
c is a set constant, e.g., c =30mpm.
1. When the rolling speed is less than or equal to 30mpm, the outlet coiling speed = the rolling speed multiplied by the thickness coupling speed and the gain =25mpm multiplied by 1.14=28.5mpm;
2. exit thickness =0.17mm, thickness coupling velocity gain of 1.14.
3. When the rolling speed >30mpm, exit take-up speed = rolling speed x (1 + actual forward slip value) =500 x (1 + 2.4%) =512mpm.
[ control of departure tension ]
After the operation of starting, the given tension = set tension + manual adjustment tension + thickness control adjustment tension =122.5kg +1.2kg +0.3kg =124kg;
bringing the given tension into a preset current calculation model, and calculating a second target current of the coiling machine;
keeping the actual current equal to the second target current, and keeping the tension in an opening state.
In summary, the embodiment of the invention provides a control method for a cold-rolled strip, which enables the given tension of a coiler to be dynamically adjusted according to the thickness of the strip steel so as to meet the start-up requirements of the strip steel with different thicknesses, solves various fault conditions caused by insufficient start-up tension of the coiler, and is beneficial to improving the start-up rolling stability of the cold-rolled strip.
In a second aspect, based on the same inventive concept, the present embodiment provides a control apparatus for a cold-rolled sheet strip, as shown in fig. 3, comprising:
a first obtaining module 301, configured to obtain a set tension of the coiler;
a start tension obtaining module 302, configured to determine a thickness coupling start tension of the recoiling machine based on the set tension and a preset thickness coupling tension coefficient, where the thickness coupling tension coefficient is determined based on a thickness of the strip steel;
a given tension obtaining module 303, configured to determine a given tension of the coiler based on the thickness-coupled start tension and the set tension;
a target current determination module 304, configured to bring the given tension into a preset current calculation model, and determine a first target current of the coiler;
and the first control module 305 is used for controlling the current of the coiler to rise from an initial value to the first target current so as to complete the strip building.
As an optional embodiment, the preset current calculation model is: i = (T × R × (10/I)) × (b/100) × g; wherein I is the first target current, T is the given tension, R is the radius of the cold-rolled steel coil, I is the motor transmission ratio of the coiler, b is the torque current of the coiler, and g is the gravity acceleration.
As an alternative embodiment, the cold rolling mill further comprises a continuous rolling mill connected to the coiler, and the apparatus further comprises:
the rolling speed acquisition module is used for acquiring the rolling speed of the continuous rolling mill;
and the outlet coiling speed determining module is used for determining the outlet coiling speed of the coiling machine according to the rolling speed so that the coiling machine coils the strip steel based on the outlet coiling speed.
As an alternative embodiment, the outlet take-up speed determining module is configured to: if the rolling speed is less than or equal to a preset rolling speed, determining that the outlet coiling speed is equal to the product of the rolling speed and a preset thickness coupling speed gain, wherein the thickness coupling speed gain is determined based on the thickness of the strip steel; and if the rolling speed is greater than the preset rolling speed, determining that the outlet coiling speed is equal to the product of the actual forward slip value and the rolling speed after summing 1, wherein the actual forward slip value is determined based on the relative difference between the actual running speed of the strip steel and the rolling speed.
As an alternative embodiment, the preset rolling speed is between 25mpm and 30mpm.
As an alternative embodiment, the thickness coupling speed gain is between 1.0 and 1.15.
As an alternative embodiment, the cold rolling mill further comprises a continuous rolling mill, the continuous rolling mill being connected to the coiler, the apparatus further comprising:
the tension updating module is used for updating the given tension based on the set tension and the thickness control adjusting tension, and the thickness control adjusting tension is determined based on the thickness adjusting amount and a preset thickness influence coefficient;
the second target current determining module is used for bringing the updated given tension into the preset current calculation model to determine a second target current of the coiling machine;
and the second control module is used for controlling the actual current of the coiling machine to be equal to the second target current so as to finish the control of the starting tension.
As an alternative embodiment, the predetermined thickness coupling tension coefficient is between-0.2 and 0.6.
The above modules may be implemented by software codes, and in this case, the modules may be stored in a memory of the control device. The above modules may also be implemented by hardware, such as an integrated circuit chip.
The implementation principle and the generated technical effects of the control device for the cold-rolled strip provided by the embodiment of the invention are the same as those of the method embodiment, and for the sake of brief description, the corresponding contents in the method embodiment can be referred to where the device embodiment is not mentioned.
In a third aspect, based on the same inventive concept, the present embodiment provides an electronic device 500, as shown in fig. 4, including: a memory 501, a processor 502 and a computer program 503 stored on the memory and executable on the processor, the processor 501 implementing the steps of the method for controlling cold-rolled strip according to the first aspect when executing the program.
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 (10)
1. A control method of a cold-rolled strip is characterized by being applied to a cold-rolling mill, wherein the cold-rolling mill comprises a coiler, and the method comprises the following steps:
acquiring the set tension of the coiler;
determining the thickness coupling start tension of the coiling machine based on the set tension and a preset thickness coupling tension coefficient, wherein the thickness coupling tension coefficient is determined based on the thickness of the strip steel;
determining a given tension of the coiler based on the thickness-coupled start-up tension and the set tension;
bringing the given tension into a preset current calculation model, and determining a first target current of the coiling machine;
and controlling the current of the coiler to rise from an initial value to the first target current so as to finish the strip steel sheet building.
2. The method of claim 1, wherein the predetermined current calculation model is: i = (T × R × (10/I)) × (b/100) × g;
wherein I is the first target current, T is the given tension, R is the radius of the cold-rolled steel coil, I is the motor transmission ratio of the coiler, b is the torque current of the coiler, and g is the gravitational acceleration.
3. The method of claim 1, wherein the cold rolling mill further comprises a tandem mill coupled to the coiler, and further comprising, after the strip is built up:
acquiring the rolling speed of the continuous rolling mill;
and determining the outlet coiling speed of the coiling machine according to the rolling speed so that the coiling machine coils the strip steel based on the outlet coiling speed.
4. The method of claim 3, wherein said determining an exit coiling speed of said coiler based on said rolling speed comprises:
if the rolling speed is less than or equal to a preset rolling speed, determining that the outlet coiling speed is equal to the product of the rolling speed and a preset thickness coupling speed gain, wherein the thickness coupling speed gain is determined based on the thickness of the strip steel;
and if the rolling speed is greater than the preset rolling speed, determining that the outlet coiling speed is equal to the product of the actual forward slip value and the rolling speed after summing 1, wherein the actual forward slip value is determined based on the relative difference between the actual running speed of the strip steel and the rolling speed.
5. The method of claim 4, wherein the predetermined rolling speed is between 25mpm and 30mpm.
6. The method of claim 4, wherein the thickness coupling speed gain is between 1.0 and 1.15.
7. The method of claim 1, wherein the cold rolling mill further comprises a tandem mill coupled to the coiler, and further comprising, after the strip is built up:
updating the given tension based on the set tension and a thickness control adjustment tension, wherein the thickness control adjustment tension is determined based on a thickness adjustment amount and a preset thickness influence coefficient;
introducing the updated given tension into the preset current calculation model, and determining a second target current of the coiler;
and controlling the current of the coiling machine to be equal to the second target current so as to finish the start tension control.
8. The method of claim 1, wherein the thickness-coupled tension coefficient is between-0.2 and 0.6.
9. A control device for cold-rolled sheet strips is characterized by comprising the following components:
the first acquisition module is used for acquiring the set tension of the coiling machine;
the start tension obtaining module is used for determining the thickness coupling start tension of the coiling machine based on the set tension and a preset thickness coupling tension coefficient, and the thickness coupling tension coefficient is determined based on the thickness of the strip steel;
the given tension obtaining module is used for determining the given tension of the coiling machine based on the thickness coupling start tension and the set tension;
the target current determining module is used for bringing the given tension into a preset current calculation model and determining a first target current of the coiling machine;
and the first control module is used for controlling the current of the coiling machine to rise from an initial value to the first target current so as to complete the strip steel sheet building.
10. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the processor implementing the steps of the method of any one of claims 1 to 8 when executing the program.
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| CN202211436884.6A CN115846420A (en) | 2022-11-16 | 2022-11-16 | Control method and device for cold-rolled strip and electronic equipment |
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| CN202211436884.6A CN115846420A (en) | 2022-11-16 | 2022-11-16 | Control method and device for cold-rolled strip and electronic equipment |
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