CN115338382B - Continuous casting billet head position analysis method and related equipment - Google Patents
Continuous casting billet head position analysis method and related equipment Download PDFInfo
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- CN115338382B CN115338382B CN202210968435.XA CN202210968435A CN115338382B CN 115338382 B CN115338382 B CN 115338382B CN 202210968435 A CN202210968435 A CN 202210968435A CN 115338382 B CN115338382 B CN 115338382B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/20—Controlling or regulating processes or operations for removing cast stock
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1226—Accessories for subsequent treating or working cast stock in situ for straightening strands
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The embodiment of the invention provides a method and related equipment for analyzing the head position of a continuous casting billet, wherein the method comprises the following steps: acquiring the real-time rotation linear speed of the withdrawal and straightening machine; acquiring a current time accumulated value T and a last scanning period time accumulated value T n‑1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside; based on the accumulated value T of the current moment and the accumulated value T of the time of the previous scanning period n‑1 Determining a current scanning period; calculating the forward numerical value of a continuous casting billet head in the current scanning period based on the real-time rotation line speed and the current scanning period; and (3) carrying out rounding operation on the continuous casting billet head advancing value, and taking the continuous casting billet head advancing value after the rounding operation as the continuous casting billet head position. The effect of obtaining the accurate real-time position of the continuous casting billet head can be achieved.
Description
Technical Field
The invention relates to the field of continuous casting, in particular to a method and related equipment for analyzing the head position of a continuous casting billet.
Background
In a PLC control system for continuous casting machine production, the following method is generally adopted for tracking the position of the head of a continuous casting billet:
first kind: and an encoder which is coaxial with the driving motor is arranged on the withdrawal and straightening machine device, and when the withdrawal and straightening machine is driven to produce, the encoder which is coaxial with the driving motor rotates along with the motor, and then the real-time position of the head of the continuous casting billet is calculated by a signal fed back by the encoder.
Second kind: and setting a time pulse signal with a fixed period in a PLC control program, and drawing a real-time speed value of the continuous casting blank by using a withdrawal and straightening machine every time a fixed time passes, and calculating by the PLC program to obtain the real-time position of the head of the continuous casting blank.
In the first mode, since the temperature and humidity of the position where the withdrawal and straightening machine is located are high during normal production of the continuous casting machine, the encoder and the electric circuit thereof are liable to be broken down, and when the fault occurs, since the continuous casting machine is producing, the fault handling is performed manually to the area, and the risk is high. In the second mode, the period of the time pulse signal is generally tens of milliseconds to several seconds, so that the real-time speed value of the continuous casting billet pulled by the withdrawal and straightening machine is difficult to avoid certain fluctuation in actual production, and the accuracy of the real-time position data of the head of the continuous casting billet obtained by the method is not high.
Therefore, the prior art has a low accuracy in determining the real-time position of the head of the continuous casting billet.
Disclosure of Invention
The invention aims to provide a method for analyzing the head position of a continuous casting billet, which can improve the accuracy of analyzing the head position of the continuous casting billet.
In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:
in a first aspect, an embodiment of the present application provides a method for analyzing a position of a head of a continuous casting billet, including:
acquiring the real-time rotation linear speed of the withdrawal and straightening machine;
acquiring a current time accumulated value T and a last scanning period time accumulated value T n-1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside;
based on the current time accumulated value T and the last scanning period time accumulated value T n-1 Determining a current scanning period;
calculating the forward numerical value of a continuous casting billet head in the current scanning period based on the real-time rotation line speed and the current scanning period;
and carrying out rounding operation on the continuous casting billet head advancing value, and taking the continuous casting billet head advancing value after the rounding operation as the position of the continuous casting billet head.
In an alternative embodiment, the method further comprises:
determining the residual decimal value of the continuous casting billet head advancing numerical value after the continuous casting billet head advancing numerical value is rounded;
returning to the step of executing the real-time rotating line speed of the withdrawal and straightening machine to obtain the continuous casting billet forward numerical value in the real-time scanning period based on the real-time rotating line speed and the real-time scanning period, and adding the continuous casting billet forward numerical value and the small numerical value to obtain the updated continuous casting billet forward numerical value;
the step of rounding the continuous casting billet head advancing value to obtain the continuous casting billet head position comprises the following steps:
and carrying out rounding operation on the updated continuous casting billet head advancing value, and taking the updated continuous casting billet head advancing value after the rounding operation as the position of the continuous casting billet head.
In an alternative embodiment, the method is based on the current time accumulated value T and the last scanning period time accumulated value T n-1 A step of determining a current scan period, comprising:
calculating the accumulated value T of the current moment and the accumulated value T of the previous scanning period time n-1 And determining the difference as the current scan period.
In an alternative embodiment, the step of calculating the continuous casting billet forward value in the real-time scanning period based on the real-time rotation line speed and the real-time scanning period includes:
converting the real-time rotational line speed into a 32-bit real number format;
converting the real-time scanning period into a 32-bit real number format;
multiplying the real-time rotation line speed of the 32-bit real number format by the real-time scanning period of the 32-bit real number format to obtain the continuous casting billet head advancing value in the real-time scanning period.
In an alternative embodiment, the step of obtaining the real-time rotational linear velocity of the withdrawal and straightening machine withdrawal blank includes:
acquiring an address of a frequency converter of the tension leveler;
and obtaining the real-time rotation linear speed of the withdrawal and straightening machine withdrawal blank based on the address of the withdrawal and straightening machine frequency converter.
In an alternative embodiment, the method further comprises:
and cutting the continuous casting square billet based on the head position of the continuous casting square billet.
In a second aspect, embodiments of the present application provide a continuous casting billet head position analysis apparatus, the apparatus including:
the first acquisition module is used for acquiring the real-time rotation linear speed of the withdrawal and straightening machine;
a second acquisition module for acquiring the current time accumulated value T and the last scanning period time accumulated value T n-1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside;
a first determining module for determining a current time accumulated value T and a last scanning period time accumulated value T n-1 Determining a current scanning period;
the calculation module is used for calculating the forward numerical value of the continuous casting billet head in the real-time scanning period based on the real-time rotation line speed and the real-time scanning period;
and the second determining module is used for carrying out rounding operation on the continuous casting billet head advancing value, and taking the continuous casting billet head advancing value after the rounding operation as the continuous casting billet head position.
In an alternative embodiment, the second determining module is further configured to:
determining the residual decimal value of the continuous casting billet head advancing numerical value after the continuous casting billet head advancing numerical value is rounded;
returning to the step of executing the real-time rotating line speed of the withdrawal and straightening machine to obtain the continuous casting billet forward numerical value in the real-time scanning period based on the real-time rotating line speed and the real-time scanning period, and adding the continuous casting billet forward numerical value and the small numerical value to obtain the updated continuous casting billet forward numerical value;
and carrying out rounding operation on the updated continuous casting billet head advancing value, and taking the updated continuous casting billet head advancing value after the rounding operation as the position of the continuous casting billet head.
In a third aspect, an embodiment of the present application provides a PLC system, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the continuous casting billet head position analysis method when executing the computer program.
In a fourth aspect, embodiments of the present application provide a storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method for analyzing the head position of a continuous casting billet.
The application has the following beneficial effects:
the method comprises the steps of obtaining real-time rotation linear speed of a withdrawal and straightening machine withdrawal blank; acquiring a current time accumulated value T and a last scanning period time accumulated value T n-1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside; based on the accumulated value T of the current moment and the accumulated value T of the time of the previous scanning period n-1 Determining a current scanning period; calculating the forward numerical value of a continuous casting billet head in the current scanning period based on the real-time rotation line speed and the current scanning period; and (3) carrying out rounding operation on the continuous casting billet head advancing value, and taking the continuous casting billet head advancing value after the rounding operation as the continuous casting billet head position. The automatic control device can achieve the effect of obtaining the accurate real-time position of the continuous casting billet head, meet the automatic control requirement of continuous casting machine production, cancel the encoder arranged on the withdrawal and straightening machine motor, reduce the equipment cost of continuous casting machine production investment, and avoid the personal safety problem caused by repairing the encoder and the electric circuit thereof during continuous casting machine production.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a PLC system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for analyzing the head position of a continuous casting billet according to an embodiment of the present invention;
FIG. 3 is a second flow chart of a method for analyzing the head position of a continuous casting billet according to the embodiment of the present invention;
fig. 4 is a block diagram of a device for analyzing the head position of a continuous casting billet according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Through a great deal of researches, the inventor finds that in many application programs, an encoder coaxial with a driving motor is arranged on a withdrawal and straightening machine device, when the withdrawal and straightening machine is driven to produce, the encoder coaxial with the driving motor rotates along with the motor, and then the real-time position of the head of the continuous casting blank is calculated by a signal fed back by the encoder. Or setting a time pulse signal with a fixed period in a PLC control program, and drawing a real-time speed value of the continuous casting blank by using a withdrawal and straightening machine every time a fixed time passes, and calculating by the PLC program to obtain the real-time position of the head of the continuous casting blank. The head position analysis of the continuous casting square billet in the two methods is inaccurate.
In view of the above-mentioned problems, the present embodiment provides a method and related apparatus for analyzing the head position of a continuous casting billet, which can obtain the real-time rotational linear velocity of the withdrawal of the billet by a withdrawal machine; acquiring a current time accumulated value T and a last scanning period time accumulated value T n-1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside; based on the accumulated value T of the current moment and the accumulated value T of the time of the previous scanning period n-1 Determining a current scanning period; calculating the forward numerical value of a continuous casting billet head in the current scanning period based on the real-time rotation line speed and the current scanning period; and (3) carrying out rounding operation on the continuous casting billet head advancing value, and taking the continuous casting billet head advancing value after the rounding operation as the continuous casting billet head position. The effect of obtaining the accurate real-time position of the continuous casting billet head can be achieved, and the scheme provided by the embodiment is explained in detail below.
The embodiment provides a PLC system capable of calculating the head position of a continuous casting billet.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a PLC system 100 according to an embodiment of the present disclosure. The PLC system 100 may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1. The components shown in fig. 1 may be implemented in hardware, software, or a combination thereof.
The PLC system 100 includes a strand head position analysis device 110, a memory 120, and a processor 130.
The memory 120 and the processor 130 are electrically connected directly or indirectly to each other to realize data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. The strand head position analyzing device 110 includes at least one software function module that may be stored in the memory 120 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of the PLC system 100. The processor 130 is configured to execute executable modules stored in the memory 120, such as software functional modules and computer programs included in the continuous casting billet head position analysis apparatus 110.
The Memory 120 may be, but is not limited to, a random access Memory (RandomAccess Memory, RAM), a Read Only Memory (ROM), a programmable Read Only Memory (Programmable Read-Only Memory, PROM), an erasable Read Only Memory (Erasable ProgrammableRead-Only Memory, EPROM), an electrically erasable Read Only Memory (Electric Erasable ProgrammableRead-Only Memory, EEPROM), etc. The memory 120 is configured to store a program, and the processor 130 executes the program after receiving an execution instruction.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for analyzing the head position of a continuous casting billet applied to the PLC system 100 of fig. 1, and the method includes various steps described in detail below.
Step 201: and obtaining the real-time rotation linear speed of the withdrawal and straightening machine.
Because the PLC system is used for controlling the operation of pulling the blank of the pulling and straightening machine, the PLC system can acquire the address of the frequency converter of the pulling and straightening machine; and obtaining the real-time rotation linear speed of the withdrawal and straightening machine withdrawal blank based on the address of the withdrawal and straightening machine frequency converter.
Step 202: acquiring a current time accumulated value T and a last scanning period time accumulated value T n-1 。
The scanning period is a period when the PLC system has executed all programs inside.
And when the PLC system finishes all the internal programs each time, representing a scanning period, and under the scanning period, the withdrawal and straightening machine performs withdrawal operation on the continuous casting billets.
Step 203: based on the current time accumulated value T and the last scanning period time accumulated value T n-1 The current scan period is determined.
And determining the scanning period of the current PLC system based on the difference value between the current time accumulated value T and the last scanning period time accumulated value.
Each time there may be a difference in the scanning period, in order to ensure the accuracy of the determined scanning period, the accurate time value of the current scanning period is obtained based on the difference between the current time accumulated value T and the time accumulated value of the previous scanning period.
Step 204: and calculating the continuous casting billet forward numerical value in the current scanning period based on the real-time rotation line speed and the current scanning period.
The real-time rotation linear speed read by the PLC system is an integer of 16 bit type, the unit is mm/min, when the conversion is carried out by taking mm/ms as the unit, the conversion result is a real number type with decimal, and according to the PLC arithmetic operation instruction rule, corresponding number system conversion is carried out before calculation, namely, the real-time rotation linear speed and the current scanning period time value are converted into real numbers to participate in operation.
The method comprises the following steps:
converting the real-time rotational line speed into a 32-bit real number format; converting the current scanning period into a 32-bit real number format; multiplying the real-time rotation line speed in a 32-bit real number format by the current scanning period in a 32-bit real number format to obtain the continuous casting billet head advancing value in the current scanning period.
Step 205: and carrying out rounding operation on the continuous casting billet head advancing numerical value, and taking the casting billet head advancing numerical value after the rounding operation as the position of the continuous casting billet head.
Rounding the determined forward values of the strand head, for example: and if the continuous casting billet head advancing value is 10.2, 10.2 is rounded, and 10 is used as the head position of the continuous casting billet, so that the production precision requirement of the continuous casting machine is ensured.
Cutting the continuous casting square billet based on the head position of the continuous casting square billet to obtain the continuous casting square billet required by steel rolling.
The method comprises the steps of obtaining real-time rotation linear speed of a withdrawal and straightening machine withdrawal blank; acquiring a current time accumulated value T and a last scanning period time accumulated value T n-1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside; based on the accumulated value T of the current moment and the accumulated value T of the time of the previous scanning period n-1 Determining a current scanning period; calculating the forward numerical value of a continuous casting billet head in the current scanning period based on the real-time rotation line speed and the current scanning period; and (3) carrying out rounding operation on the continuous casting billet head advancing value, and taking the continuous casting billet head advancing value after the rounding operation as the continuous casting billet head position. The automatic control device can achieve the effect of obtaining the accurate real-time position of the continuous casting billet head, meet the automatic control requirement of continuous casting machine production, cancel the encoder arranged on the withdrawal and straightening machine motor, reduce the equipment cost of continuous casting machine production investment, and avoid the personal safety problem caused by repairing the encoder and the electric circuit thereof during continuous casting machine production.
In another embodiment of the present application, as shown in fig. 3, there is provided a method for analyzing the position of the head of a continuous casting billet, which specifically includes the steps of:
step 301: and determining the residual decimal value of the continuous casting billet head advancing numerical value after the continuous casting billet head advancing numerical value rounding operation.
Step 302: and obtaining the real-time rotation linear speed of the withdrawal and straightening machine.
Step 303: acquiring a current time accumulated value T and a last scanning period time accumulated value T n-1 。
The scanning period is a period when the PLC system has executed all programs inside.
Step 304: based on the current time accumulated value T and the last scanning period time accumulated value T n-1 The current scan period is determined.
Step 305: and calculating the continuous casting billet forward numerical value of the continuous casting billet in the current scanning period based on the real-time rotation line speed and the current scanning period, and adding the continuous casting billet forward numerical value with the decimal value to obtain the updated continuous casting billet forward numerical value.
Step 306: and carrying out rounding operation on the updated continuous casting billet head advancing value, and taking the updated continuous casting billet head advancing value after the rounding operation as the position of the continuous casting billet head.
When the integral part and the decimal part of the continuous casting billet head advancing value are used, after the continuous casting billet head advancing value is rounded, the current time accumulated value T and the last scanning period time accumulated value T are obtained in order to avoid errors caused by the fact that the continuous casting billet head advancing value obtained in the last scanning period is obtained by the decimal part of the continuous casting billet head advancing value in the last scanning period when the real-time rotating linear speed of the withdrawal machine is obtained n-1 Based on the current time accumulated value T and the last scanning period time accumulated value T n-1 Determining a current scanning period, calculating the forward value of the continuous casting billet in the current scanning period based on the real-time rotation line speed and the current scanning period, adding the decimal part of the forward value of the continuous casting billet in the previous period to the forward value of the current continuous casting billet to obtain an updated forward value of the continuous casting billet, and rounding the forward value of the continuous casting billet after the update to obtain the head position of the continuous casting billet. So that the position of the billet head can be precisely cast.
And in the subsequent scanning period, determining the head position of the continuous casting billet, rounding according to the calculated continuous casting billet head advancing value, accumulating the obtained integer part to a real-time value of the casting billet head position, accumulating the rest decimal part with the advancing value of the casting billet head position in the new scanning period in the next scanning period to obtain the new advancing value of the casting billet head position, rounding and accumulating again, and continuously circulating, so that the production precision requirement of the continuous casting machine can be ensured.
Referring to fig. 4, an embodiment of the present application further provides a continuous casting billet head position analysis device 110 applied to the PLC system 100 of fig. 1, where the continuous casting billet head position analysis device 110 includes:
a first obtaining module 111, configured to obtain a real-time rotational linear velocity of a withdrawal of the withdrawal and straightening machine;
a second obtaining module 112 for obtaining the current time accumulated value T and the last scanning period time accumulated value T n-1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside;
a first determining module 113 for determining a current time accumulated value T and a last scanning period time accumulated value T n-1 Determining a current scanning period;
a calculating module 114, configured to calculate a continuous casting billet forward value in the current scanning period based on the real-time rotation line speed and the current scanning period;
and the second determining module 115 is configured to perform a rounding operation on the continuous casting billet head advancing value, and take the continuous casting billet head advancing value after the rounding operation as the continuous casting billet head position.
Optionally, the second determining module 115 is further configured to:
determining the residual decimal value of the continuous casting billet head advancing numerical value after the continuous casting billet head advancing numerical value is rounded;
when calculating the continuous casting billet head advancing value of the next scanning period, returning to execute the real-time rotating line speed of the withdrawal and straightening machine withdrawal until the continuous casting billet is calculated in the current scanning period based on the real-time rotating line speed and the current scanning period, and adding the continuous casting billet head advancing value and the decimal value to obtain the updated continuous casting billet head advancing value;
and carrying out rounding operation on the updated continuous casting billet head advancing value, and taking the updated continuous casting billet head advancing value after the rounding operation as the position of the continuous casting billet head.
In summary, the real-time rotation linear speed of the withdrawal and straightening machine for withdrawing the blank is obtained; acquiring a current time accumulated value T and a last scanning period time accumulated value T n-1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside; based on the accumulated value T of the current moment and the accumulated value T of the time of the previous scanning period n-1 Determining a current scanning period; calculating the forward numerical value of a continuous casting billet head in the current scanning period based on the real-time rotation line speed and the current scanning period; and (3) carrying out rounding operation on the continuous casting billet head advancing value, and taking the continuous casting billet head advancing value after the rounding operation as the continuous casting billet head position. The automatic control device can achieve the effect of obtaining the accurate real-time position of the continuous casting billet head, meet the automatic control requirement of continuous casting machine production, cancel the encoder arranged on the withdrawal and straightening machine motor, reduce the equipment cost of continuous casting machine production investment, and avoid the personal safety problem caused by repairing the encoder and the electric circuit thereof during continuous casting machine production.
The present application also provides a PLC system 100, the PLC system 100 including a processor 130 and a memory 120. The memory 120 stores computer executable instructions that, when executed by the processor 130, implement the method of analyzing the strand head position.
The embodiment of the present application also provides a storage medium, where a computer program is stored, and when the computer program is executed by the processor 130, the method for analyzing the head position of the continuous casting billet is implemented.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners as well. The apparatus embodiments described above are merely illustrative, for example, flow diagrams and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part. The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely various embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. The method for analyzing the head position of the continuous casting billet is applied to a PLC system, and the PLC system is used for controlling a withdrawal and straightening machine to withdraw the billet, and is characterized by comprising the following steps:
acquiring the real-time rotation linear speed of the withdrawal and straightening machine;
acquiring a current time accumulated value T and a last scanning period time accumulated value T n-1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside;
based on the current time accumulated value T and the last scanning period time accumulated value T n-1 Determining a current scanning period;
calculating the forward numerical value of a continuous casting billet head in the current scanning period based on the real-time rotation line speed and the current scanning period;
and carrying out rounding operation on the continuous casting billet head advancing value, and taking the continuous casting billet head advancing value after the rounding operation as the position of the continuous casting billet head.
2. The method according to claim 1, wherein the method further comprises:
determining the residual decimal value of the continuous casting billet head advancing numerical value after the continuous casting billet head advancing numerical value is rounded;
when calculating the continuous casting billet head advancing value of the next scanning period, returning to execute the real-time rotating line speed of the withdrawal and straightening machine withdrawal until the continuous casting billet is calculated in the current scanning period based on the real-time rotating line speed and the current scanning period, and adding the continuous casting billet head advancing value and the decimal value to obtain the updated continuous casting billet head advancing value;
the step of rounding the continuous casting billet head advancing value to obtain the continuous casting billet head position comprises the following steps:
and carrying out rounding operation on the updated continuous casting billet head advancing value, and taking the updated continuous casting billet head advancing value after the rounding operation as the position of the continuous casting billet head.
3. The method according to claim 1, wherein the step of accumulating the value T based on the current time and the last scanning cycle time n-1 A step of determining a current scan period, comprising:
calculating the accumulated value T of the current moment and the accumulated value T of the previous scanning period time n-1 And determining the difference as the current scan period.
4. The method of claim 1, wherein the step of calculating a continuous casting billet advancement value for the continuous casting billet in the current scanning period based on the real-time rotational line speed and the current scanning period comprises:
converting the real-time rotational line speed into a 32-bit real number format;
converting the current scanning period into a 32-bit real number format;
multiplying the real-time rotation line speed in a 32-bit real number format by the current scanning period in a 32-bit real number format to obtain the continuous casting billet head advancing value in the current scanning period.
5. The method of claim 4, wherein the step of obtaining the real-time rotational linear velocity of the withdrawal apparatus comprises:
acquiring an address of a frequency converter of the tension leveler;
and obtaining the real-time rotation linear speed of the withdrawal and straightening machine withdrawal blank based on the address of the withdrawal and straightening machine frequency converter.
6. The method according to claim 1, wherein the method further comprises:
and cutting the continuous casting square billet based on the head position of the continuous casting square billet.
7. A continuous casting billet head position analysis apparatus, the apparatus comprising:
the first acquisition module is used for acquiring the real-time rotation linear speed of the withdrawal and straightening machine;
a second acquisition module for acquiring the current time accumulated value T and the last scanning period time accumulated value T n-1 Wherein, the scanning period is the period when the PLC system has executed all the programs inside;
a first determining module for determining a current time accumulated value T and a last scanning period time accumulated value T n-1 Determining a current scanning period;
the calculation module is used for calculating the forward numerical value of the continuous casting billet head in the current scanning period based on the real-time rotation line speed and the current scanning period;
and the second determining module is used for carrying out rounding operation on the continuous casting billet head advancing value, and taking the continuous casting billet head advancing value after the rounding operation as the continuous casting billet head position.
8. The apparatus of claim 7, wherein the second determination module is further configured to:
determining the residual decimal value of the continuous casting billet head advancing numerical value after the continuous casting billet head advancing numerical value is rounded;
when calculating the continuous casting billet head advancing value of the next scanning period, returning to execute the real-time rotating line speed of the withdrawal and straightening machine withdrawal until the continuous casting billet is calculated in the current scanning period based on the real-time rotating line speed and the current scanning period, and adding the continuous casting billet head advancing value and the decimal value to obtain the updated continuous casting billet head advancing value;
and carrying out rounding operation on the updated continuous casting billet head advancing value, and taking the updated continuous casting billet head advancing value after the rounding operation as the position of the continuous casting billet head.
9. A PLC system comprising a memory and a processor, the memory storing a computer program, the processor implementing the steps of the method of any one of claims 1-6 when the computer program is executed.
10. A storage medium having stored thereon a computer program, which when executed by a processor performs the steps of the method according to any of claims 1-6.
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| KR200250256Y1 (en) * | 2001-07-07 | 2001-11-17 | (주)새터자동화기술 | cutting casting plate machine controller of constant casting process |
| CN107931554A (en) * | 2017-11-30 | 2018-04-20 | 山信软件股份有限公司 | A kind of continuous casting billet method for calculating and locating |
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| CN114850429A (en) * | 2022-05-11 | 2022-08-05 | 重庆钢铁股份有限公司 | Method for hot resetting of casting blank in square billet continuous casting |
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| KR200250256Y1 (en) * | 2001-07-07 | 2001-11-17 | (주)새터자동화기술 | cutting casting plate machine controller of constant casting process |
| CN109202030A (en) * | 2017-06-30 | 2019-01-15 | 宝山钢铁股份有限公司 | A kind of continuous casting base position tracking detection system and method end to end |
| CN107931554A (en) * | 2017-11-30 | 2018-04-20 | 山信软件股份有限公司 | A kind of continuous casting billet method for calculating and locating |
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