A method and device for controlling the uncoiling of a strip

Abstract

The application discloses a control method and device for strip steel unwinding, wherein the control method is to obtain the unwinding speed and the remaining unwinding length of an unwinder, when the remaining unwinding length is less than a first preset length, the unwinding speed is reduced to a preset speed, and a first acceleration in a first speed reduction process is obtained, when the first acceleration is in a first preset interval and the remaining unwinding length is less than a second preset length, the unwinder is controlled to reduce speed from the preset speed, a second acceleration in a second speed reduction process is obtained, if the second acceleration is not in a second preset interval, a first control signal is outputted to make the unwinder stop and send an alarm information, and if the second acceleration is in the second preset interval, it is indicated that the steel coil does not appear to swing tail, a second control signal is outputted to cut off the unwinding strip steel conveyed by the unwinder, the method reduces the swing tail speed reduction confusion in the unwinding process, the problem of the strip steel coil swing tail is effectively controlled, and the reliability of the steel coil unwinding control is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of strip steel uncoiling control, and particularly to a strip steel uncoiling control method and device. BACKGROUND

[0002] The uncoiler is one of the important equipment in the production process of cold-rolled strip steel. For the incoming material, sometimes there are quality defects in the head of the strip during the winding of the previous process, and the inner diameter head part needs to be cut off manually. The head part of the previous process is the tail part of the current process, and the cut-off part of the steel coil needs to be unloaded.

[0003] The unloading of the tail coil of the steel coil frequently occurs at the entrance of the electroplating tin production line, and even the belt breaks. The main reason is that the paper sleeve of the incoming material is abnormally thick, which exceeds the supply standard, resulting in incorrect calculation of the uncoiler diameter at the entrance of the tin plating, and the system slows down and then accelerates, the steel coil loosens and slips, and thus the tail of the belt is thrown off and the belt is broken. The uncoiler may have a loose and slipping phenomenon during uncoiling, which will then cause tail throwing and speed reduction confusion, and cannot meet the requirements of tail throwing precision control and the occurrence of tail throwing.

[0004] Therefore, how to improve the reliability of the steel coil uncoiling control is a technical problem to be solved at present. SUMMARY

[0005] The present application provides a kind of strip steel uncoiling control method and device, improve the reliability of the steel coil uncoiling control.

[0006] The present application provides the following scheme:

[0007] In a first aspect, the present application provides a strip steel uncoiling control method, which comprises:

[0008] obtaining the uncoiling speed and the remaining uncoiling length of the uncoiler;

[0009] when the remaining uncoiling length is less than a first preset length, the uncoiling speed is reduced to a preset speed, and a first acceleration in a first speed reduction process is obtained;

[0010] when the first acceleration is in a first preset interval and the remaining uncoiling length is less than a second preset length, the uncoiler is controlled to reduce speed from the preset speed, and a second acceleration in a second speed reduction process is obtained;

[0011] if the second acceleration is not in a second preset interval, a first control signal is output to stop the uncoiler and issue an alarm information;

[0012] If the second acceleration is in a second preset interval, output a second control signal to cut off the uncoiling strip conveyed by the uncoiler.

[0013] In an optional embodiment, before the uncoiling speed and the remaining uncoiling length of the uncoiler are acquired, the method further comprises:

[0014] reading sleeve information of the coil;

[0015] outputting an activation signal to perform the acquisition of the uncoiling speed and the remaining uncoiling length of the uncoiler when the sleeve information is a paper sleeve or no sleeve.

[0016] In an optional embodiment, before the first acceleration in the one-time speed reduction process is acquired, the method further comprises:

[0017] acquiring specification information of the uncoiling strip;

[0018] determining an interval value of the first preset interval according to the specification information and a preset relationship table, wherein the preset relationship table is a table of correspondence between the specification information and the interval value.

[0019] In an optional embodiment, the specification information is a strip thickness, and the determination of the interval value of the first preset interval according to the specification information and the preset relationship table comprises:

[0020] when the strip thickness is greater than 0.2 mm, determining that the interval value of the first preset interval is -0.6-0.4 m / s 2 .

[0021] when the strip thickness is not greater than 0.2 mm, determining that the interval value of the first preset interval is -0.4-0.2 m / s 2 .

[0022] In an optional embodiment, after the first acceleration in the one-time speed reduction process is acquired, the method further comprises:

[0023] acquiring an abnormal duration when the first acceleration is not in the first preset interval;

[0024] if the abnormal duration is greater than a preset duration, outputting a third control signal to stop the uncoiler and issuing the warning information.

[0025] In an optional embodiment, after the first acceleration in the one-time speed reduction process is acquired, the method further comprises:

[0026] acquiring a running speed of the uncoiler after the one-time speed reduction;

[0027] output a reset signal when the running speed is less than the speed threshold, so that a control program of the strip steel unwinding is in an initialization state;

[0028] output a first set signal when the running speed is not less than the speed threshold, so as to determine whether the first acceleration is in a first preset interval.

[0029] In an optional embodiment, after the first acceleration in the first deceleration process is obtained, the method further comprises:

[0030] determining whether a welding signal of the unwound strip steel is received;

[0031] if not, outputting a reset signal, so that the control program of the strip steel unwinding is in the initialization state;

[0032] if yes, outputting a second set signal, so as to determine whether the first acceleration is in the first preset interval.

[0033] In a second aspect, the embodiments of the present application further provide a control device of strip steel unwinding, the device comprising:

[0034] a first obtaining module, configured to obtain an unwinding speed and a remaining unwinding length of an unwinder;

[0035] a second obtaining module, configured to reduce the unwinding speed to a preset speed when the remaining unwinding length is less than a first preset length, and obtain a first acceleration in a first deceleration process;

[0036] a third obtaining module, configured to control the unwinder to decelerate from the preset speed when the first acceleration is in a first preset interval and the remaining unwinding length is less than a second preset length, and obtain a second acceleration in a second deceleration process;

[0037] a first control module, configured to output a first control signal to make the unwinder stop and issue an alarm information when the second acceleration is not in a second preset interval;

[0038] a second control module, configured to output a second control signal to cut off the unwound strip steel conveyed by the unwinder when the second acceleration is in the second preset interval.

[0039] In a third aspect, the embodiments of the present application further provide an electronic device, comprising a processor and a memory, the memory is coupled to the processor, and the memory stores instructions, when the instructions are executed by the processor, the electronic device executes the steps of the method in any one of the first aspect.

[0040] In a fourth aspect, the embodiments of the present application further provide a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the steps of the method in any one of the first aspect.

[0041] Compared with the prior art, the control method and device for strip unwinding have the following advantages:

[0042] The control method of the present application obtains the unwinding speed and the remaining unwinding length of the unwinder. When the remaining unwinding length is less than the first preset length, it indicates that there is less remaining strip on the unwinder, and the unwinding speed is reduced to the preset speed, and the first acceleration in the first speed reduction process is obtained. When the first acceleration is in the first preset interval and the remaining unwinding length is less than the second preset length, it indicates that there is no tail swing in the first speed reduction process and the remaining strip is further reduced and needs to be prepared for cutting, and the unwinder is controlled to reduce speed from the preset speed, and the second acceleration in the second speed reduction process is obtained. If the second acceleration is not in the second preset interval, it indicates that the coil may have a tail swing, and a first control signal is output to stop the unwinder and issue an alarm information. If the second acceleration is in the second preset interval, it indicates that the coil does not have a tail swing, and a second control signal is output to cut off the unwinding strip delivered by the unwinder. Through the two judgments of the remaining unwinding length and the unwinding acceleration, it can be accurately determined whether there is a slip and tail swing phenomenon in the unwinding process of the unwinder, and then the corresponding control strategy is implemented, reducing the chaotic speed reduction in the unwinding process and effectively controlling the coil tail swing problem, thereby improving the reliability of the coil unwinding control. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0044] Figure 1 The structure diagram of the unwinding production line provided by the embodiments of the present application is shown in the figure.

[0045] Figure 2 The flowchart of the control method of the strip unwinding provided by the embodiments of the present application is shown in the figure.

[0046] Figure 3 The logic diagram of the strip unwinding control method provided by the embodiments of the present application is shown in the figure.

[0047] Figure 4 The structure diagram of the control device of the strip unwinding provided by the embodiments of the present application is shown in the figure.

[0048] The reference signs are explained as follows: 1-uncoiler, 2-turning pinch roll, 3-double cutting shear, 4-tension roll, 5-strip, 10-steel coil, 11-core shaft, 12-coil drum. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the protection scope of the embodiments of the present application.

[0050] The control method for uncoiling a strip proposed in the embodiments of the present application can be applied to control uncoiling of a strip in various scenes. The following will take a 1420 electro-tinning production line of a certain steel plant as an example to specifically describe how to implement the uncoiling control method. Please refer to Figure 1 , the uncoiling machine 1, the turning pinch roll 2, the double cutting shear 3 and the tension roll 4 are arranged along the traction direction of the strip at the inlet of the electro-tinning production line. The core shaft 11 is installed at the center position of the steel coil 10. The coil drum 12 can also be used to coil the strip when the steel coil 10 is initially coiled. The two ends of the core shaft 11 are installed on the uncoiling machine 1. The uncoiling of the steel coil 10 is realized by rotating the core shaft 11 driven by a motor. The strip 5 is sequentially conveyed to the welding machine through the turning pinch roll 2, the double cutting shear 3 and the tension roll 4. The welding machine welds the head and tail of the uncoiled strip to realize continuous tinning production. The double cutting shear 3 is used to cut the head and tail portions of the steel coil. The tail portion is cut and then unloaded. During the uncoiling process, the strip may be loose and slip, which may cause the inlet section to slow down and become chaotic, resulting in the occurrence of the tail of the strip being thrown empty. In order to improve the reliability of the uncoiling of the steel coil, the following will specifically describe how to implement the uncoiling control method proposed in the present application.

[0051] Please refer to Figure 2 , Figure 2 is a flowchart of a control method for uncoiling a strip. The method comprises the following steps.

[0052] S11, obtaining an uncoiling speed and a remaining uncoiling length of the uncoiling machine.

[0053] Specifically, before uncoiling, the steel coil needs to be installed on the uncoiling machine, and then the uncoiling parameters are set. The uncoiling parameters include the outer diameter D0 of the coil drum, the outer diameter D1 of the steel coil and the uncoiling speed. The uncoiling speed represents the process speed when the strip is normally uncoiled. The uncoiling speed is greater than 100 m / min. When the uncoiling is started, the remaining uncoiling length can be determined by the set uncoiling parameters. The remaining uncoiling length represents the length of the strip that has not been uncoiled on the uncoiling machine. After the uncoiling machine is coiled, the strip threading work is performed. After the threading, the 30 m portion of the head of the strip is cut off at the double cutting shear. The head of the coiled strip is welded with the tail of the previous coiled strip.

[0054] In actual application, due to the sleeve type of the center position of the steel coil being different, the coiling tension is different when the strip steel is coiled, for example, the strip steel is coiled through a paper sleeve, which is mostly used in the scene of relatively thin thickness, and the coiling tension used is relatively small, so that the strip steel is prone to slip and tail swing during the uncoiling process; but when the strip steel is coiled through a steel sleeve, the strength of the steel sleeve is better, the coiling tension used is relatively large, and the probability of slip and tail swing during the uncoiling process is smaller, so if not corresponding to distinguish control, it will cause waste of calculation resources of control program. Based on this, in a specific embodiment, before obtaining the uncoiling speed and the remaining uncoiling length of the uncoiler, the method further comprises:

[0055] reading the sleeve information of the steel coil; when the sleeve information is a paper sleeve or no sleeve, output an activation signal to execute obtaining the uncoiling speed and the remaining uncoiling length of the uncoiler.

[0056] Specifically, the sleeve information represents the sleeve type of the coiled strip steel, and can also include the outer diameter of the sleeve, which is usually 420mm, 448mm, 508mm, 520mm, 548mm, 608mm. When the sleeve information represents that the steel coil is a paper sleeve or no sleeve, it means that in the corresponding process of coiling the strip steel, the tension used is smaller, and the density of the coiled strip steel is relatively smaller, so that the strip steel is prone to slip and tail swing during the uncoiling process. Therefore, the activation signal is output, and the steps of obtaining the uncoiling speed and the remaining uncoiling length are executed; on the contrary, when the sleeve information represents that the sleeve is of other types, such as a steel sleeve, the activation signal is not output, and the control method for the strip steel uncoiling is not implemented, so as to reduce the waste of calculation resources and improve the calculation efficiency of the conventional strip steel uncoiling control. After obtaining the uncoiling speed and the remaining uncoiling length, step S12 is entered.

[0057] S12, when the remaining uncoiling length is less than a first preset length, the uncoiling speed is reduced to a preset speed, and a first acceleration in a first speed reduction process is obtained.

[0058] Specifically, when the remaining uncoiling length is less than the first preset length, it means that there is relatively less strip steel to be uncoiled on the uncoiler, and it is necessary to prepare for parking and cutting the strip steel, so the uncoiling speed is reduced to a preset speed, which can be implemented by adjusting the driving frequency of the uncoiler to reduce the speed, and a first acceleration in the speed reduction process is obtained. The first acceleration represents the fluctuation amplitude of the running speed of the uncoiler in the speed reduction process. The preset speed can be set according to the actual production line, for example, 60m / min, and the first acceleration can be obtained based on the ratio of the speed difference in a preset time period to the time period. After obtaining the first acceleration, step S13 is entered.

[0059] S13, when the first acceleration is in a first preset interval and the remaining uncoiling length is less than a second preset length, the uncoiler is controlled to reduce the speed from the preset speed, and a second acceleration in a second speed reduction process is obtained.

[0060] Specifically, the first acceleration is in the first preset interval, indicating that the deceleration process of the uncoiler is relatively stable, and the fluctuation range of the running speed is not large, so it can be determined that the steel coil does not slip and tail off. When the remaining uncoiling length is less than the second preset length, it indicates that the uncoiled steel on the uncoiler is further reduced, and the tail of the uncoiled steel needs to be cut, so the uncoiler is controlled to decelerate from the preset speed, and the second acceleration is obtained in real time during the deceleration process.

[0061] In actual application, since the uncoiler is composed of many mechanical parts and is driven based on a motor, if a fault occurs while the program is still in nesting, a safety accident is likely to occur due to a response fault. Based on this, in a specific embodiment, after obtaining the first acceleration in the first deceleration process, the method further comprises:

[0062] obtaining the running speed of the uncoiler after the first deceleration; outputting a reset signal when the running speed is less than a speed threshold, so that the control program of the uncoiled steel is in an initialization state; and outputting a first set signal when the running speed is not less than the speed threshold, to determine whether the first acceleration is in the first preset interval.

[0063] Specifically, the speed threshold can be set based on actual conditions, for example, any value below 2 m / min. The running speed represents the uncoiling speed of the uncoiler after executing the deceleration. When the running speed is less than the speed threshold, it indicates that the running speed of the uncoiler after deceleration is abnormal, and the program jumps out of the loop, so that the control program of the uncoiled steel is in an initialization state. It can be understood that in the initialization state, the control program can output a stop alarm information according to the running speed being less than the speed threshold, to remind the operator to handle the emergency; otherwise, when the running speed is not less than the speed threshold, it indicates that the running speed of the uncoiler after deceleration is normal, and the first set signal is outputted to execute the determination step of whether the first acceleration is in the first preset interval.

[0064] In actual application, since multiple process steps are involved in the electroplated tin production line, if a fault occurs in other processes, it will affect the operation of the production line. At this time, if the program is still in nesting, a safety accident is also likely to occur. Based on this, in a specific embodiment, after obtaining the first acceleration in the first deceleration process, the method further comprises:

[0065] determining whether a welding signal of the uncoiled steel is received; if not, outputting a reset signal so that the control program of the uncoiled steel is in an initialization state; and if so, outputting a second set signal to determine whether the first acceleration is in the first preset interval.

[0066] Specifically, the welding signal of the uncoiling strip steel is not received, indicating that the production line operation has a fault, and a reset signal is output to exit the program loop, so that the control program of the uncoiling strip steel is in an initialization state. Similarly, in the initialization state, the control program can output a stop alarm information according to the unreceived welding signal; on the contrary, the welding signal of the uncoiling strip steel is received, indicating that the production line operation is normal, and a second set signal is output to continue the control program.

[0067] In actual application, since there are various specifications of the strip steel, the energy released when the strip steel of different specifications slips and tails off is different. If the first preset interval is set as a fixed value, the program may be misjudged. Based on this, in a specific embodiment, before the first acceleration in the first speed reduction process is obtained, the method further includes:

[0068] obtaining specification information of the uncoiling strip steel; and determining an interval value of the first preset interval according to the specification information and a preset relationship table, wherein the preset relationship table is a correspondence table of the specification information and the interval value.

[0069] Specifically, the specification information standardizes the specification of the uncoiling strip steel, for example, the strip steel width or the strip steel thickness, or can include the strip steel width and the strip steel thickness. Based on the specification information and the preset relationship table, the interval value of the first preset interval can be accurately determined. The preset relationship table can be determined by the experience of technical personnel or can be determined by calibration experiment, which is not specifically limited herein, and can only represent the corresponding relationship between the specification information and the interval value.

[0070] In a specific embodiment, the specification information is the strip steel thickness, and the interval value of the first preset interval is determined according to the specification information and the preset relationship table, including:

[0071] when the strip steel thickness is greater than 0.2 mm, the interval value of the first preset interval is determined as -0.6-0.4 m / s 2 ; and when the strip steel thickness is not greater than 0.2 mm, the interval value of the first preset interval is determined as -0.4-0.2 m / s 2 .

[0072] Specifically, taking the strip steel thickness as the specification information can reduce the calculation redundancy. When the strip steel thickness is greater than 0.2 mm, the interval value is determined as -0.6-0.4 m / s 2 ; on the contrary, when the strip steel thickness is not greater than 0.2 mm, the interval value is determined as -0.4-0.2 m / s 2 . It should be noted that when the acceleration is negative, it indicates that the coil rotates in the opposite direction of uncoiling; and when the acceleration is positive, it indicates that the coil rotates in the uncoiling direction.

[0073] In a specific embodiment, after the first acceleration in the first speed reduction process is obtained, the method further includes:

[0074] an abnormal duration when the first acceleration is not in the first preset interval is obtained; if the abnormal duration is greater than a preset duration, a third control signal is output to stop the uncoiler and send an alarm information.

[0075] Specifically, the abnormal duration represents the duration when the first acceleration is not in the first preset interval. The preset duration can be set according to actual needs, which can reduce program misjudgment. For example, the abnormal duration is set to 150 ms. When the abnormal duration is greater than the preset duration, it is determined that the uncoiler has slipped and spun, and then the third control signal is output to stop the uncoiler and send an alarm information to remind the on-site personnel to take corresponding measures. After the second acceleration in the secondary speed reduction process is obtained, step S14 or step S15 is entered.

[0076] S14, if the second acceleration is not in the second preset interval, a first control signal is output to stop the uncoiler and send an alarm information.

[0077] Specifically, the interval value of the second preset interval can also be determined based on the specification information and the preset relationship table. When the second acceleration is not in the second preset interval, it indicates that the speed amplitude fluctuates greatly during the secondary speed reduction process, and the coil may slip and spin. Then, the first control signal is output to control the uncoiler to stop and send an alarm information. Similarly, a preset duration of 150 ms can be set to determine the abnormal duration when the second acceleration is not in the second preset interval. If the abnormal duration when the second acceleration is not in the second preset interval is greater than the preset duration, the first control signal is output.

[0078] S15, if the second acceleration is in the second preset interval, a second control signal is output to cut off the uncoiled strip delivered by the uncoiler.

[0079] Specifically, when the second acceleration is in the second preset interval, it indicates that the speed fluctuation amplitude is small during the process of reducing the speed of the strip from the preset speed to the stop, and it can be determined that the coil does not slip and spin. Then, the second control signal is output to control the double cutting shear to cut the uncoiled strip. It can be understood that after the uncoiled strip is cut, the remaining tail part on the uncoiler is removed. In order to prevent the tail from spinning, the system is limited that the diameter of the tail coil needs to be greater than the diameter of the coil by more than 4 mm, which meets the requirements of most coil inner diameter settings, and generally makes the length of the remaining tail coil less than 30 m, so as to improve the yield.

[0080] The abnormal protection program for unloading the tail coil and spinning the tail of the inlet coil will be described in detail below taking the 1420 electroplated tin production line as an example. Figure 3 As shown in the figure, the specific control step sequence is as follows:

[0081] Step 1: The winding on the uncoiler is completed.

[0082] Step 2: set parameters, input sleeve outer diameter, tail coil outer diameter and uncoiling speed.

[0083] Step 3: start the program.

[0084] Step 4: when the remaining uncoiling length S is a first preset length S1, the uncoiling speed is reduced from the uncoiling speed V0 to a preset speed V1; if the acceleration a is negative and greater than 0.6 m / s 2 , or the acceleration a is positive and greater than 0.4 m / s 2 .

[0085] Step 5: if yes, delay 150 ms, stop immediately and alarm.

[0086] Step 6: if no, when the actual length of the strip steel is a second preset length S2 from the remaining uncoiling length S, the uncoiling speed is reduced from the preset speed V1 to 0; if the acceleration a is negative and greater than 0.6 m / s 2 .

[0087] Step 7: if yes, delay 150 ms, stop immediately and alarm.

[0088] Step 8: if no, stop the strip steel after cutting by double cutting shears.

[0089] Step 9: unload the tail coil.

[0090] Step 10: end.

[0091] Based on the same inventive concept as the control method, the embodiment of the present application also provides a control device for strip steel uncoiling, please refer to Figure 4 , the device comprises:

[0092] A first acquisition module 401 is configured to acquire the uncoiling speed of the uncoiler and the remaining uncoiling length;

[0093] A second acquisition module 402 is configured to reduce the uncoiling speed to a preset speed when the remaining uncoiling length is less than a first preset length, and acquire a first acceleration in a first speed reduction process;

[0094] A third acquisition module 403 is configured to control the uncoiler to reduce speed from the preset speed when the first acceleration is in a first preset interval and the remaining uncoiling length is less than a second preset length, and acquire a second acceleration in a second speed reduction process;

[0095] A first control module 404 is configured to output a first control signal to make the uncoiler stop and issue an alarm information when the second acceleration is not in a second preset interval;

[0096] The second control module 405 is configured to output a second control signal to cut off the uncoiling strip conveyed by the uncoiler when the second acceleration is in the second preset interval.

[0097] In an optional embodiment, the device further comprises:

[0098] The reading module is configured to read sleeve information of the coil;

[0099] The first output module is configured to output an activation signal to perform the acquisition of the uncoiling speed and the remaining uncoiling length of the uncoiler when the sleeve information is a paper sleeve or no sleeve.

[0100] In an optional embodiment, the device further comprises:

[0101] The fourth acquisition module is configured to acquire specification information of the uncoiling strip;

[0102] The first determination module is configured to determine an interval value of the first preset interval according to the specification information and a preset relationship table, wherein the preset relationship table is a comparison table of the specification information and the interval value.

[0103] In an optional embodiment, the specification information is a strip thickness, and the first determination module comprises:

[0104] The first determination submodule is configured to determine that the interval value of the first preset interval is -0.6-0.4 m / s when the strip thickness is greater than 0.2 mm. 2 ;

[0105] The second determination submodule is configured to determine that the interval value of the first preset interval is -0.4-0.2 m / s when the strip thickness is not greater than 0.2 mm. 2 .

[0106] In an optional embodiment, the device further comprises:

[0107] The fifth acquisition module is configured to acquire an abnormal duration when the first acceleration is not in the first preset interval.

[0108] The second output module is configured to output a third control signal to make the uncoiler stop and output the alarm information when the abnormal duration is greater than a preset duration.

[0109] In an optional embodiment, the device further comprises:

[0110] The sixth acquisition submodule is configured to acquire a running speed of the uncoiler after a first speed reduction.

[0111] The third output module is configured to output a reset signal when the running speed is less than the speed threshold, so that a control program of the strip steel unwinding is in an initialization state.

[0112] The fourth output module is configured to output a first set signal when the running speed is not less than the speed threshold, so as to determine whether the first acceleration is in a first preset interval.

[0113] In an optional embodiment, the device further comprises:

[0114] The second determination module is configured to determine whether a welding signal of the unwound strip steel is received.

[0115] The fifth output module is configured to output a reset signal when the welding signal is not received, so that the control program of the strip steel unwinding is in the initialization state.

[0116] The sixth output module is configured to output a second set signal when the welding signal is received, so as to determine whether the first acceleration is in the first preset interval.

[0117] Based on the same inventive concept as the control method, the embodiments of the present application further provide an electronic device, comprising a processor and a memory, the memory is coupled to the processor, the memory stores instructions, when the instructions are executed by the processor, the electronic device executes the steps of any one of the control method.

[0118] Based on the same inventive concept as the control method, the embodiments of the present application further provide a computer readable storage medium, which stores a computer program, the program is executed by a processor to realize the steps of any one of the control method.

[0119] The technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0120] The uncoiling speed of the uncoiler and the remaining uncoiling length are acquired, when the remaining uncoiling length is less than a first preset length, it indicates that the remaining strip steel on the uncoiler is less, then the uncoiling speed is reduced to a preset speed, and a first acceleration in a first speed reduction process is acquired, when the first acceleration is in a first preset interval and the remaining uncoiling length is less than a second preset length, it indicates that the tail swing does not occur in the first speed reduction process and the remaining strip steel is further reduced to prepare for cutting, then the uncoiler is controlled to reduce speed from the preset speed, and a second acceleration in a second speed reduction process is acquired, if the second acceleration is not in a second preset interval, it indicates that the tail swing of the coil may occur, a first control signal is output to stop the uncoiler and send an alarm information, if the second acceleration is in the second preset interval, it indicates that the tail swing of the coil does not occur, a second control signal is output to cut off the uncoiling strip steel conveyed by the uncoiler, through the twice judgment of the remaining uncoiling length and the uncoiling acceleration, whether the tail swing phenomenon exists in the uncoiling process of the uncoiler can be accurately determined, then the corresponding control strategy is implemented, the tail swing speed reduction confusion in the uncoiling process is reduced, the tail swing problem of the coil is effectively controlled, and the reliability of the uncoiling control of the coil is improved.

[0121] Those skilled in the art will appreciate that embodiments of the application can be supplied as a method, a system, or a computer program product. Accordingly, the application can be embodied in the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the application can be embodied in the form of a computer program product on one or more computer readable storage media (including, but not limited to, disk memory, CD-ROMs, optical storage media, etc.) having computer usable program code embodied thereon.

[0122] The present application is described with reference to the flowcharts and / or block diagrams of the methods, apparatus (modules, systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing apparatus generate a means for implementing the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in one or more flows and / or blocks Figure 1 The apparatus for implementing the functions specified in one or more flows and / or blocks.

[0123] These computer program instructions can also be stored in a computer readable storage medium that can direct the computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the computer readable storage medium produce a product including instruction apparatus, which implements the functions specified in the flowcharts and / or block diagrams. Figure 1 The functions specified in one or more flows and / or blocksFigure 1 the function specified in the one or more blocks.

[0124] These computer program instructions can also be loaded into computer or other programmable data processing devices, so that a series of operation steps are performed on the computer or other programmable data processing devices to generate computer-implemented processes, thus the instructions executed on the computer or other programmable data processing devices provide a process for implementing the flowchart Figure 1 the flowchart or flowcharts and / or a block Figure 1 the function specified in the one or more blocks.

[0125] Although preferred embodiments of the application have been described, those skilled in the art will recognize that additional modifications and variations can be made thereto without departing from the spirit and scope of the application. It is therefore intended that the appended claims cover all such modifications and variations as fall within the scope of the application.

[0126] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore intended that the invention be covered within the scope of the appended claims, and their equivalents.

Claims

1. A control method of strip steel uncoiling, characterized in that, The method comprises: acquiring a decoiling speed and a remaining decoiling length of a decoiler; when the remaining decoiling length is less than a first preset length, reducing the decoiling speed to a preset speed, and acquiring a first acceleration in a first speed reduction process; when the first acceleration is in a first preset interval and the remaining decoiling length is less than a second preset length, controlling the decoiler to reduce speed from the preset speed, and acquiring a second acceleration in a second speed reduction process; if the second acceleration is not in a second preset interval, outputting a first control signal to make the decoiler stop and output an alarm information; if the second acceleration is in the second preset interval, outputting a second control signal to cut off a decoiling strip conveyed by the decoiler; the first acceleration is acquired based on a ratio of a speed difference of a preset time period to the preset time period.

2. The control method of strip uncoiling according to claim 1, characterized in that, Before the acquiring of the decoiling speed and the remaining decoiling length of the decoiler, the method further comprises: reading sleeve information of a coil; when the sleeve information is a paper sleeve or no sleeve, outputting an activation signal to execute the acquiring of the decoiling speed and the remaining decoiling length of the decoiler.

3. The control method of strip steel uncoiling according to claim 1, characterized in that, Before the acquiring of the first acceleration in the first speed reduction process, the method further comprises: acquiring specification information of the decoiling strip; determining an interval value of the first preset interval according to the specification information and a preset relationship table, wherein the preset relationship table is a comparison table of the specification information and the interval value.

4. The control method of strip uncoiling according to claim 3, characterized in that, The specification information is a strip thickness, and the determining of the interval value of the first preset interval according to the specification information and the preset relationship table comprises: when the strip thickness is greater than 0.2mm, the interval value of the first preset interval is -0.6~0.4m / s 2 ; when the strip steel thickness is not greater than 0.2mm, the interval value of the first preset interval is determined as -0.4~0.2m / s 2 .

5. The control method of strip steel uncoiling according to claim 1, characterized in that, After the acquiring of the first acceleration in the first speed reduction process, the method further comprises: acquiring an abnormal duration when the first acceleration is not in the first preset interval; if the abnormal duration is greater than a preset duration, outputting a third control signal to make the decoiler stop and output the alarm information.

6. The control method of strip uncoiling according to claim 1, characterized in that, After the acquiring of the first acceleration in the first speed reduction process, the method further comprises: acquiring a running speed of the decoiler after the first speed reduction; when the running speed is less than a speed threshold, outputting a reset signal to make a control program of the decoiling of the strip in an initialization state; when the running speed is not less than the speed threshold, outputting a first set signal to determine whether the first acceleration is in the first preset interval.

7. The control method of strip steel uncoiling according to claim 1, characterized in that, After the acquiring of the first acceleration in the first speed reduction process, the method further comprises: determining whether a welding signal of the decoiling strip is received; if not, outputting a reset signal to make a control program of the decoiling of the strip in an initialization state; if yes, outputting a second set signal to determine whether the first acceleration is in the first preset interval.

8. A control device for strip steel unwinding, characterized by The device comprises: a first acquiring module, configured to acquire a decoiling speed and a remaining decoiling length of a decoiler; a second acquiring module, configured to, when the remaining decoiling length is less than a first preset length, reduce the decoiling speed to a preset speed, and acquire a first acceleration in a first speed reduction process; a third acquiring module, configured to, when the first acceleration is in a first preset interval and the remaining decoiling length is less than a second preset length, control the decoiler to reduce speed from the preset speed, and acquire a second acceleration in a second speed reduction process; The first control module is configured to output a first control signal to stop the uncoiler and send an alarm when the second acceleration is not in the second preset range. The second control module is configured to output a second control signal to cut off the uncoiled strip steel conveyed by the uncoiler when the second acceleration is in the second preset range. The first acceleration is obtained based on a ratio of a speed difference of a preset time period to the preset time period.

9. An electronic device, comprising: An electronic device includes a processor and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the electronic device to perform the steps of any of the methods of claims 1-7.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, A program that, when executed by a processor, implements the steps of any of the methods of claims 1-7.

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