CN115338382A - 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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- CN115338382A CN115338382A CN202210968435.XA CN202210968435A CN115338382A CN 115338382 A CN115338382 A CN 115338382A CN 202210968435 A CN202210968435 A CN 202210968435A CN 115338382 A CN115338382 A CN 115338382A
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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 for analyzing the head position of a continuous casting square billet and related equipment, wherein the method comprises the following steps: acquiring the real-time rotation linear speed of a withdrawal and straightening machine withdrawal billet; 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 of the PLC system executing all internal programs; based on the current time accumulated value T and the last scanning period time accumulated value T n‑1 Determining the current scanning period; calculating the forward numerical value of the continuous casting billet head in the current scanning period based on the real-time rotating linear speed and the current scanning period; and carrying out rounding operation on the forward numerical value of the continuous casting billet head, and taking the forward numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet. 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 steel, in particular to a method for analyzing the head position of a continuous casting square billet and related equipment.
Background
In a PLC control system for continuous casting machine production, the following method is generally adopted for tracking the position of a continuous casting head:
the first method comprises the following steps: an encoder coaxial with the driving motor is installed on the withdrawal and straightening machine device, when the withdrawal and straightening machine motor is driven to produce, the encoder coaxially installed 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 through a signal fed back by the encoder.
And the second method comprises the following steps: and setting a time pulse signal with a fixed period in a PLC control program, and calculating the real-time position of the head of the continuous casting billet by using a withdrawal and straightening machine to pull the real-time speed value of the continuous casting billet every time when a fixed time passes.
For the first mode, because the continuous casting machine is in normal production, the position of the withdrawal and straightening unit is high in temperature and humidity, the encoder and the electric line thereof are prone to faults, and when the faults occur, because the continuous casting machine is in production, when the fault processing is performed manually in the area, great danger exists. For the second mode, because the time pulse signal period is fixed, generally, the time pulse signal period is tens of milliseconds to several seconds, when in actual production, the real-time speed value of the withdrawal and straightening unit for withdrawing the continuous casting billet is difficult to avoid to have certain fluctuation, and the real-time position data precision of the continuous casting billet head obtained by the method is not high.
The prior art is therefore less accurate in determining the real-time position of the strand head.
Disclosure of Invention
The invention aims to provide a method for analyzing the head position of a continuous casting square billet, which can improve the accuracy of analyzing the head position of the continuous casting square billet.
In order to achieve the above purpose, the embodiments of the present application employ the following technical solutions:
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 a withdrawal and straightening machine withdrawal billet;
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 of the PLC system executing all internal programs;
accumulating based on the current time accumulated value T and the previous scanning period timeValue T n-1 Determining the current scanning period;
calculating the continuous casting billet head advancing numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period;
and performing rounding operation on the advancing numerical value of the continuous casting billet head, and taking the advancing numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet.
In an alternative embodiment, the method further comprises:
determining the residual decimal value of the forward numerical value of the continuous casting head after the rounding operation of the forward numerical value of the continuous casting head is performed;
returning to the step of executing the step of obtaining the real-time rotating linear velocity of the withdrawal and straightening machine withdrawal billet to calculate the continuous casting billet head forward numerical value in the real-time scanning period based on the real-time rotating linear velocity and the real-time scanning period, and adding the continuous casting billet head forward numerical value and the small numerical value to obtain the updated continuous casting billet head forward numerical value;
the step of rounding the forward numerical value of the continuous casting billet head to obtain the head position of the continuous casting billet comprises the following steps of:
and performing rounding operation on the updated continuous casting billet head advancing numerical value, and taking the updated continuous casting billet head advancing numerical value after the rounding operation as the head position of the continuous casting billet.
In an alternative embodiment, said accumulated value based on said current time and said last scanning period time is based on said current time accumulated value T and said last scanning period time accumulated value T n-1 Determining a current scanning period, comprising:
calculating the current time accumulated value T and the previous scanning period time accumulated value T n-1 Determining the difference as the current scanning period.
In an alternative embodiment, the step of calculating the forward values of the continuous casting billet in the real-time scanning period and the continuous casting billet head in the real-time scanning period based on the real-time rotational linear velocity and the real-time scanning period includes:
converting the real-time rotation linear velocity into a 32-bit real number format;
converting the real-time scanning period into a 32-bit real number format;
and multiplying the real-time rotating linear speed in the 32-bit real number format with the real-time scanning period in the 32-bit real number format to obtain the continuous casting billet head advancing value in the real-time scanning period.
In an optional embodiment, the step of obtaining a real-time rotation linear speed of a withdrawal and straightening unit withdrawal billet includes:
acquiring an address of a frequency converter of a withdrawal and straightening machine;
and obtaining the real-time rotation linear speed of the withdrawal and straightening machine withdrawal billet 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, an embodiment of the present application provides an apparatus for analyzing a head position of a continuous casting billet, the apparatus including:
the first acquisition module is used for acquiring the real-time rotation linear speed of a withdrawal and straightening machine withdrawal billet;
a second obtaining module 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 of the PLC system executing all internal programs;
a first determination module for determining the current time cumulative value T and the last scanning period time cumulative value T based on the current time cumulative value T n-1 Determining the current scanning period;
the calculation module is used for calculating the continuous casting billet head advancing numerical value in the real-time scanning period based on the real-time rotating linear velocity and the real-time scanning period;
and the second determining module is used for rounding the continuous casting billet head advancing numerical value and taking the continuous casting billet head advancing numerical value after rounding operation as the continuous casting billet head position.
In an optional embodiment, the second determining module is further configured to:
determining the residual decimal value of the forward numerical value of the continuous casting head after the rounding operation of the forward numerical value of the continuous casting head is performed;
returning to execute the step of calculating the continuous casting billet head advancing numerical value in the real-time scanning period based on the real-time rotating linear speed of the withdrawal and straightening machine withdrawal to obtain the updated continuous casting billet head advancing numerical value by adding the continuous casting billet head advancing numerical value and the small numerical value;
and performing rounding operation on the updated continuous casting billet head advancing numerical value, and taking the updated continuous casting billet head advancing numerical value after the rounding operation as the head position of the continuous casting billet.
In a third aspect, the present application provides a PLC system including a memory storing a computer program and a processor implementing the steps of the method for analyzing the position of the head of a continuous casting billet when the processor executes the computer program.
In a fourth aspect, embodiments of the present application provide a storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the steps of the method for analyzing the position of a head of a continuous casting billet.
The application has the following beneficial effects:
the method comprises the steps of obtaining the real-time rotation linear speed of a withdrawal and straightening machine withdrawal billet; 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 of the PLC system executing all internal programs; based on the current time accumulated value T and the last scanning period time accumulated value T n-1 Determining the current scanning period; calculating the forward numerical value of the continuous casting billet head in the current scanning period based on the real-time rotating linear speed and the current scanning period; and carrying out rounding operation on the forward numerical value of the continuous casting billet head, and taking the forward numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet. 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 tension leveler motor, reduce the equipment cost of continuous casting machine production investment, and stop the continuous casting machineThe personal safety problem caused by the urgent repair of the encoder and the electric circuit thereof during the production of the casting machine.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
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 position of the head of a continuous casting billet according to an embodiment of the present invention;
FIG. 3 is a second schematic flow chart of a method for analyzing the position of the head of a continuous casting billet according to an embodiment of the present invention;
fig. 4 is a block diagram of a device for analyzing the position of the head of a continuous casting billet according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of 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 present invention, 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are only used to distinguish one description from another and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
Through a great deal of research by the inventor, in many application programs, an encoder coaxial with a driving motor is installed on a withdrawal and straightening machine device, when the withdrawal and straightening machine motor is driven to produce, the encoder coaxially installed 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 through a signal fed back by the encoder. Or setting a time pulse signal with a fixed period in a PLC control program, pulling a continuous casting billet real-time speed value by using a withdrawal and straightening unit every time a fixed time passes, and calculating the real-time position of the head of the continuous casting billet through the PLC program. The analysis of the head position of the continuous casting square billet is inaccurate by the two methods.
In view of the above-mentioned problems, the present inventionThe embodiment provides a method for analyzing the head position of a continuous casting square billet and related equipment, which can obtain the real-time rotation linear speed of a withdrawal and straightening machine withdrawal billet; 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 of the PLC system executing all internal programs; based on the current time accumulated value T and the last scanning period time accumulated value T n-1 Determining the current scanning period; calculating the continuous casting billet head advancing numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period; and carrying out rounding operation on the forward numerical value of the continuous casting billet head, and taking the forward numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet. 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 elaborated 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 are shown in fig. 1, or have a different configuration than that 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 continuous casting billet head position analyzing device 110, a memory 120, and a processor 130.
The elements of the memory 120 and the processor 130 are electrically connected to each other directly or indirectly to achieve 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 continuous casting billet 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 apparatus for analyzing the position of a head of a continuous casting billet 110.
The Memory 120 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory 120 is used for storing a program, and the processor 130 executes the program after receiving the execution instruction.
Referring to fig. 2, fig. 2 is a flowchart illustrating a method for analyzing a position of a head of a continuous casting billet applied to the PLC system 100 of fig. 1, and the method including various steps will be described in detail.
Step 201: and acquiring the real-time rotation linear speed of the withdrawal and straightening machine withdrawal billet.
The PLC system is used for controlling the operation of the withdrawal and straightening machine billet, so that the PLC system can acquire the address of the frequency converter of the withdrawal and straightening machine; and obtaining the real-time rotation linear speed of the withdrawal and straightening machine billet based on the address of the frequency converter of the withdrawal and straightening machine.
Step 202: 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 of the PLC system executing all the internal programs.
And when the PLC system finishes executing all internal programs each time, representing a scanning period, and performing a withdrawal operation on the continuous casting square billet by the withdrawal and straightening machine in the scanning period.
Step 203: based on the current time accumulated value T and the last scanning period time accumulated value T n-1 And determining the current scanning period.
And determining the scanning period of the current PLC system based on the difference value between the current moment accumulated value T and the previous scanning period time accumulated value.
Each scanning period may be different, and in order to ensure the accuracy of the determined scanning period, the precise time value of the current scanning period is obtained based on the difference between the current time accumulated value T and the previous scanning period time accumulated value.
Step 204: and calculating the continuous casting billet head advancing numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period.
The real-time rotating linear velocity read by the PLC system is a 16-bit type integer with the unit of mm/min, when conversion is carried out by taking mm/ms as the unit, in order to ensure the numerical precision, the conversion result is a real number type with decimal, according to the PLC arithmetic operation instruction rule, corresponding numerical system conversion is carried out before calculation, namely, the real-time rotating linear velocity and the current scanning period time value are converted into real numbers to participate in the operation.
The method specifically comprises the following steps:
converting the real-time rotation linear velocity into a 32-bit real number format; converting the current scanning period into a 32-bit real number format; and multiplying the real-time rotating linear speed in the 32-bit real number format with the current scanning period in the 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 forward numerical value of the continuous casting billet head, and taking the forward numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting square billet.
Rounding the determined advancing value of the strand head, for example: and if the forward numerical value of the continuous casting billet head is 10.2, rounding 10.2, and taking 10 as the position of the continuous casting billet head, thereby ensuring the requirement of the production precision of a continuous casting machine.
And 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 the real-time rotation linear speed of a withdrawal and straightening machine withdrawal billet; 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 of the PLC system executing all internal programs; based on the current time accumulated value T and the last scanning period time accumulated value T n-1 Determining the current scanning period; calculating the forward numerical value of the continuous casting billet head in the current scanning period based on the real-time rotating linear speed and the current scanning period; rounding the advancing numerical value of the continuous casting head, and advancing the continuous casting head after roundingThe value is used as the position of the head of the continuous casting billet. The method 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 motor of the withdrawal and straightening machine, reduce the equipment cost of continuous casting machine production investment, and avoid the personal safety problem caused by the rush repair of the encoder and the electric line thereof during the production of the continuous casting machine.
In another embodiment of the present application, as shown in fig. 3, when determining the head position of the continuous casting billet next time, there is provided a method for analyzing the head position of the continuous casting billet, which specifically includes the following steps:
step 301: and determining the residual decimal value of the forward numerical value of the continuous casting head after the rounding operation is performed on the forward numerical value of the continuous casting head.
Step 302: and acquiring the real-time rotation linear speed of the withdrawal and straightening machine withdrawal billet.
Step 303: 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 of the PLC system executing all the internal programs.
Step 304: based on the current time accumulated value T and the last scanning period time accumulated value T n-1 And determining the current scanning period.
Step 305: and calculating the continuous casting billet head advancing numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period, and adding the continuous casting billet head advancing numerical value and the decimal value to obtain the updated continuous casting billet head advancing numerical value.
Step 306: and performing rounding operation on the updated advancing numerical value of the continuous casting billet head, and taking the updated advancing numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet.
When the integral part and the decimal part of the forward numerical value of the continuous casting billet head are carried out, after the forward numerical value of the continuous casting billet head is rounded, in order to avoid the error caused by the forward numerical value of the continuous casting billet head obtained in the next scanning period being subjected to the forward numerical value decimal part of the continuous casting billet head in the previous period, the real-time rotation linear speed of the withdrawal and straightening machine is obtained,obtaining the current time accumulated value T and the last scanning period time accumulated value T n-1 Based on the current time accumulated value T and the last scanning period time accumulated value T n-1 And determining a current scanning period, calculating the continuous casting square billet in the current scanning period based on the real-time rotating linear velocity and the current scanning period, adding the decimal part of the continuous casting billet head forward numerical value of the previous period to the current continuous casting billet head forward numerical value to obtain an updated continuous casting billet head forward numerical value, and performing rounding operation on the new continuous casting billet head forward numerical value to obtain the head position of the continuous casting square billet. Thereby the head position of the billet can be accurately continuously 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 by adopting the mode, accumulating the obtained integral part to the real-time value of the head position of the casting billet, accumulating the rest decimal part with the head advancing value of the casting billet in the new scanning period in the next scanning period to obtain the new advancing value of the head position of the casting billet, and then rounding, accumulating and continuously circulating, so that the requirement on the production precision 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 apparatus 110 applied to the PLC system 100 of fig. 1, where the continuous casting billet head position analysis apparatus 110 includes:
the first acquisition module 111 is used for acquiring the real-time rotation linear speed of a withdrawal and straightening machine withdrawal billet;
a second obtaining module 112, configured to obtain the current time accumulated value T and the previous scanning period time accumulated value T n-1 Wherein, the scanning period is the period of the PLC system executing all internal programs;
a first determining module 113, configured to determine the cumulative value T of the current time and the cumulative value T of the last scanning period time based on the current time n-1 Determining the current scanning period;
a calculating module 114, configured to calculate, based on the real-time rotational linear velocity and the current scanning period, a continuous casting billet head forward numerical value in the current scanning period;
and the second determining module 115 is configured to perform rounding operation on the continuous casting billet head forward numerical value, and use the continuous casting billet head forward numerical 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 forward numerical value of the continuous casting head after the rounding operation of the forward numerical value of the continuous casting head is performed;
when the continuous casting billet head forward numerical value of the next scanning period is calculated, returning to execute the step of obtaining the real-time rotating linear speed of the withdrawal and straightening unit withdrawal billet to calculate the continuous casting billet head forward numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period, and adding the continuous casting billet head forward numerical value and the decimal value to obtain the updated continuous casting billet head forward numerical value;
and performing rounding operation on the updated advancing numerical value of the continuous casting billet head, and taking the updated advancing numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet.
In conclusion, the method comprises the steps of obtaining the real-time rotation linear speed of a withdrawal and straightening machine withdrawal billet; 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 of the PLC system executing all internal programs; based on the current time accumulated value T and the last scanning period time accumulated value T n-1 Determining the current scanning period; calculating the continuous casting billet head advancing numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period; and carrying out rounding operation on the forward numerical value of the continuous casting billet head, and taking the forward numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet. The method 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 motor of the withdrawal and straightening machine, reduce the equipment cost of continuous casting machine production investment, and avoid the personal safety problem caused by the rush repair of the encoder and the electric line thereof during the production of the continuous casting machine.
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 for analyzing the position of the head of a continuous casting billet.
The embodiment of the present application also provides a storage medium, which stores a computer program, 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 ways. The apparatus embodiments described above are merely illustrative and, for example, the flowcharts 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 that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent 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 or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to 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), a magnetic disk, or an optical disk, and various media capable of storing program codes.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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 phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The above description is only for 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 of the changes or substitutions within the technical scope of the present application, and shall be covered by 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. A continuous casting billet head position analysis method is applied to a PLC system, the PLC system is used for controlling a withdrawal and straightening machine to withdraw billets, and the method is characterized by comprising the following steps:
acquiring the real-time rotation linear speed of a withdrawal and straightening machine withdrawal billet;
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 of the PLC system executing all internal programs;
based on the current time accumulated value T and the last scanning period time accumulated value T n-1 Determining the current scanning period;
calculating the continuous casting billet head advancing numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period;
and carrying out rounding operation on the advancing numerical value of the continuous casting billet head, and taking the advancing numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet.
2. The method of claim 1, further comprising:
determining the residual decimal value of the forward numerical value of the continuous casting head after the rounding operation of the forward numerical value of the continuous casting head is performed;
when the continuous casting billet head forward numerical value of the next scanning period is calculated, returning to the step of executing the step of acquiring the real-time rotating linear speed of the withdrawal and straightening machine withdrawal to calculate the continuous casting billet head forward numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period, and adding the continuous casting billet head forward numerical value and the small numerical value to obtain the updated continuous casting billet head forward numerical value;
the step of rounding the forward numerical value of the continuous casting billet head to obtain the position of the head of the continuous casting billet comprises the following steps of:
and performing rounding operation on the updated advancing numerical value of the continuous casting billet head, and taking the updated advancing numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet.
3. The method of claim 1, wherein said accumulating is based on said current time accumulated value T and said last scan cycle timeValue T n-1 Determining a current scanning period, comprising:
calculating the current time accumulated value T and the previous scanning period time accumulated value T n-1 Determining the difference as the current scanning period.
4. The method of claim 1, wherein the step of calculating a continuous casting billet head advance value in the current scanning period based on the real-time rotational linear velocity and the current scanning period comprises:
converting the real-time rotation linear velocity into a 32-bit real number format;
converting the current scanning period into a 32-bit real number format;
and multiplying the real-time rotating linear speed in the 32-bit real number format with the current scanning period in the 32-bit real number format to obtain the continuous casting billet head advancing value in the current scanning period.
5. The method as claimed in claim 4, wherein the step of obtaining the real-time rotation linear velocity of the withdrawal and straightening unit billet comprises:
acquiring an address of a frequency converter of a withdrawal and straightening machine;
and obtaining the real-time rotation linear speed of the withdrawal and straightening machine withdrawal billet based on the address of the withdrawal and straightening machine frequency converter.
6. The method of claim 1, further comprising:
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 analyzing apparatus, characterized in that the apparatus comprises:
the first acquisition module is used for acquiring the real-time rotation linear speed of a withdrawal and straightening machine withdrawal billet;
a second obtaining module 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 of the PLC system executing all internal programs;
a first determination module for determining the current time cumulative value T and the last scanning period time cumulative value T based on the current time cumulative value T n-1 Determining the current scanning period;
the calculation module is used for calculating the continuous casting billet head advancing numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period;
and the second determination module is used for carrying out rounding operation on the continuous casting billet head advancing numerical value, and taking the continuous casting billet head advancing numerical value after the rounding operation as the head position of the continuous casting billet.
8. The apparatus of claim 7, wherein the second determining module is further configured to:
determining the residual decimal value of the forward numerical value of the continuous casting head after the rounding operation is performed on the forward numerical value of the continuous casting head;
when the continuous casting billet head forward numerical value of the next scanning period is calculated, returning to the step of executing the step of acquiring the real-time rotating linear speed of the withdrawal and straightening machine withdrawal to calculate the continuous casting billet head forward numerical value in the current scanning period based on the real-time rotating linear speed and the current scanning period, and adding the continuous casting billet head forward numerical value and the small numerical value to obtain the updated continuous casting billet head forward numerical value;
and performing rounding operation on the updated advancing numerical value of the continuous casting billet head, and taking the updated advancing numerical value of the continuous casting billet head after the rounding operation as the head position of the continuous casting billet.
9. A PLC system comprising a memory having a computer program stored therein and a processor that when executed performs the steps of the method of any of claims 1-6.
10. A storage medium having a computer program stored thereon, the computer program, when being executed by a processor, performing the steps of the method as set forth in any one of the 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 |
| 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 |
| CN111531143A (en) * | 2020-05-29 | 2020-08-14 | 山东莱钢永锋钢铁有限公司 | Continuous casting machine system |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN111531143A (en) * | 2020-05-29 | 2020-08-14 | 山东莱钢永锋钢铁有限公司 | Continuous casting machine system |
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