A rolling mill thermal imaging plate shape control method

Abstract

The invention relates to the technical field of rolling mill plate processing control, and discloses a rolling mill thermal imaging plate shape control method, the operation system of the method comprises a rolling plate surface temperature and plate thickness data acquisition module, a rolling plate surface coolant spraying amount processing module, a rolling plate width direction thickness error analysis module, and a rolling plate width direction thickness error adjustment module; by using multiple groups of hot forming instruments and high-temperature laser position sensors respectively to uniformly and accurately collect the rolled plate surface width direction thermal imaging temperature image data and the rolled plate surface width direction thickness data at the input side and output side of the rolling mill along the rolled plate surface width direction, thereby achieving point-to-point precise measurement of the surface temperature of the rolled plate input side, improving the differentiated operation of the rolled plate surface cooling operation, and also achieving point-to-point scientific measurement of the rolled plate output side plate thickness, ensuring accurate feedback of the rolled plate shape result.

Description

Technical Field

[0001] The invention relates to the technical field of rolling mill plate processing control, and in particular to a rolling mill thermal imaging plate shape control method. Background Art

[0002] The rolling mill is the equipment to realize the metal rolling process, which generally refers to the equipment to complete the whole process of rolling production. The rolling mill can be divided into two-roller, four-roller, six-roller, eight-roller, twelve-roller, eighteen-roller, etc. according to the number of rollers; according to the arrangement of rollers, it can be divided into "L" type, "T" type, "F" type, "Z" type and "S" type; the ordinary rolling mill is mainly composed of rollers, frames, roller spacing adjustment devices, roller temperature adjustment devices, transmission devices, lubrication systems, control systems and roller removal devices. In addition to the main parts and devices of ordinary rolling mills, precision calenders have added devices to ensure the accuracy of calendering. Thermal imaging is the result of the thermal motion of molecules inside the object when the temperature of the object is higher than the absolute zero -273℃. Its radiation energy is proportional to the fourth power of its own temperature, and the wavelength of radiation is inversely proportional to its temperature. Infrared imaging technology is based on the level of radiation energy of the detected object. After system processing, it is converted into a thermal image of the target object and displayed in grayscale or pseudo-color, that is, the temperature distribution of the measured target is obtained to judge the state of the object. Therefore, detecting the amount of heat emitted by an object is the innate gene of infrared thermal imaging technology; thermal imaging is a detection device that detects infrared energy through non-contact and converts it into electrical signals, and then generates thermal images and temperature values ​​on the display, and can calculate the temperature value. The functions of thermal imaging include: prompting inflammation, early warning of tumors, prompting peripheral nerve diseases, analysis of other difficult diseases, and tracking of therapeutic effects. Thermal imaging is also called long-wave infrared imaging. The working band is passive infrared imaging in the range of 3 to 14 microns. It mainly records the infrared radiation of the object when it is heated, and can convert the thermal image radiated by the scene into a visible two-dimensional image. The thermal imaging system mainly includes two basic categories: thermal radiation electronic imaging and thermal photography. The current rolling process of the rolling mill needs to control the spraying amount of the plate coolant by detecting the surface temperature of the plate and adjust the position of the working roller to ensure the consistency of the thickness of the plate shape of the rolling mill. However, the existing rolling mill cannot accurately control the spraying amount of the coolant according to the thermal imaging temperature of the plate surface, which can easily cause uneven cooling temperature on the surface of the rolled plate and affect the consistency of the thickness of the rolled plate. At the same time, after rolling the plate, the rolling mill cannot accurately feedback and adjust the distance between the upper and lower working rollers of the rolling according to the rolling thickness data of the plate to achieve precise control of the shape of the rolling mill plate. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In order to solve the problem that the existing rolling mill cannot accurately control the spray amount of coolant according to the thermal imaging temperature of the plate surface, which easily causes uneven cooling temperature on the surface of the rolled plate and affects the thickness consistency of the rolled plate, and at the same time, after the rolling mill rolls the plate, it cannot accurately feedback and adjust the distance between the upper and lower working rolls according to the rolling thickness data of the plate to achieve precise control of the plate shape of the rolling mill, the above purposes of differentially and accurately controlling the spray amount of coolant and accurately adjusting the distance between the upper and lower working rolls are achieved.

[0005] (II) Technical solution

[0006] The present invention is implemented by the following technical scheme: a rolling mill thermal imaging plate shape control method, the method comprising the following steps:

[0007] S1, collecting thermal imaging temperature image data of the rolled plate surface in the width direction at the input side of the rolling mill and thickness data of the rolled plate surface in the width direction at the output side of the rolling mill;

[0008] S2, preprocessing the thermal imaging temperature image data in the width direction of the rolled plate surface and the thickness data in the width direction of the rolled plate surface;

[0009] S3, using an image recognition algorithm to measure the pre-processed thermal imaging temperature image data of the rolled plate surface in the width direction and the thermal imaging temperature numerical recognition image data of the rolled plate, and outputting the temperature distribution data of the rolled plate surface in the width direction;

[0010] S4. Establishing a mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed according to the temperature distribution data of the rolled plate surface in the width direction and the relationship between the surface cooling of the rolled plate, and calculating and outputting the data of the amount of coolant sprayed in the width direction of the rolled plate surface;

[0011] S5. After the surface of the rolled plate is cooled and rolled, numerical comparison is performed based on the thickness data of the rolled plate surface in the width direction and the designed thickness data of the rolled plate in the width direction, and the thickness error data of the rolled plate in the width direction is calculated and output;

[0012] S6. Analyzing the thickness error data of the rolled plate in the width direction by using a statistical method to obtain the mean value data of the thickness error in the width direction of the rolled plate;

[0013] S7. Call the mean value data of thickness error in the width direction of the rolled plate to adjust the distance between the working rolls of the rolling mill to eliminate the thickness processing error of the rolled plate.

[0014] Preferably, the operation steps of collecting thermal imaging temperature image data of the rolled plate surface in the width direction at the input side of the rolling mill and thickness data of the rolled plate surface in the width direction at the output side of the rolling mill are as follows:

[0015] S11, using multiple groups of thermal imagers horizontally arranged along the width direction of the rolled plate to collect online thermal imaging temperature image data of the rolled plate surface width direction at the input side of the rolling mill and establish a collection , ;in Indicates the width direction of the rolled plate. The thermal imaging temperature image data of the rolled plate surface width direction collected by the thermal imager, Indicates the maximum value of the number of thermal imaging temperature image data in the width direction of the rolled plate surface;

[0016] S12, multiple groups of high-temperature laser position sensors are horizontally arranged along the width direction of the rolled plate to collect online the thickness data of the rolled plate surface in the width direction at the output side of the rolling mill and establish a collection , ;in Indicates the width direction of the rolled plate. The thickness data of the rolled plate surface in the width direction is collected by a high-temperature laser position sensor. Indicates the maximum value of the thickness data in the width direction of the rolled plate surface.

[0017] Preferably, the steps of preprocessing the thermal imaging temperature image data in the width direction of the rolled plate surface and the thickness data in the width direction of the rolled plate surface are as follows:

[0018] S21. Using Gaussian filtering algorithm to collect thermal imaging temperature image data in the width direction of the rolled plate surface and the thickness data set of the rolled plate surface in the width direction Perform data noise reduction preprocessing to generate standard rolled plate surface width direction thermal imaging temperature image data sets and standard rolled plate surface width thickness data set .

[0019] Preferably, the steps of measuring the pre-processed thermal imaging temperature image data in the width direction of the rolled plate surface and the thermal imaging temperature numerical recognition image data of the rolled plate surface using an image recognition algorithm and outputting the temperature distribution data in the width direction of the rolled plate surface are as follows:

[0020] S31. Obtaining a thermal imaging temperature image data set in the width direction of the standard rolled plate surface

[0021] S32. Establishing a rolled plate thermal imaging temperature numerical recognition image data set , ;in Indicates A kind of rolled plate thermal imaging temperature numerical recognition image data, Indicates the maximum value of the number of rolled plate thermal imaging temperature numerical recognition image data;

[0022] S33, using image recognition algorithm to collect thermal imaging temperature image data of standard rolled plate surface width direction Thermal imaging temperature image data of the surface width direction of standard rolled plate Thermal imaging temperature numerical recognition image data set of rolled plate Thermal imaging temperature numerical recognition image data of rolled plate Image matching is used to measure the thermal imaging temperature image data of the standard rolled plate surface in the width direction. Corresponding temperature distribution data of the rolled plate surface in the width direction And create a collection ,in Indicates Thermal imaging temperature image data of standard rolled plate surface width direction Corresponding temperature distribution data of the rolled plate surface in the width direction;

[0023] The image recognition algorithm consists of the following steps:

[0024] Step 1: Set the maximum number of iterations T, search for prey, and search for the surface temperature of the rolled plate. To solve the problem of food and clothing, the chameleon begins to search for prey, that is, in the rolled plate thermal imaging temperature numerical recognition image data set. Search and standard rolled plate surface width direction thermal imaging temperature image data Matching rolled plate thermal imaging temperature numerical recognition image data , the search formula for prey is

[0025] ,in , Search for chameleon i in dimension j for the surface temperature of the rolled plate The location and number of iterations The position of the iteration number, where dimension j corresponds to the dimension A data set of rolled plate thermal imaging temperature numerical recognition images Search space, for The current optimal individual position in the search space of dimension j after the number of iterations; Search Chameleon i for rolled plate surface temperature The best position in the search space of dimension j after the number of iterations; , are two parameters that control exploration capabilities; , , are all random numbers in [0,1]. represent , , , represents the probability of the surface temperature of the rolling plate searching chameleon sensing its prey, , They represent the upper and lower limits of the jth dimension, that is, the image data set of the thermal imaging temperature numerical recognition of the rolled plate The upper and lower limits, sgn(rand-0.5), take the value of 1 or -1, which affects the direction of exploration and development;

[0026] Step 2: Prey positioning. The eyes of the rolling plate surface temperature search chameleon move independently. They are able to skillfully explore space to locate prey. Their eyes can look in two different directions at the same time and rotate and focus at the same time, so that they can see the panoramic view of the surroundings. In order to simulate this process, the author made four settings: translate the original position of the rolling plate surface temperature search chameleon to the center of gravity, find the rotation matrix that identifies the prey position, use the rotation matrix at the center of gravity to update the position of the rolling plate surface temperature search chameleon, and move the rolling plate surface temperature search chameleon back to the original position;

[0027] This stage simulates the surface temperature of the rolling plate. The position of the search chameleon when it locates the prey by rotating its eyes is updated as

[0028] , where for The average position of each dimension of the surface temperature of the rolling plate before the position rotation after the number of iterations. Indicates the surface temperature of the rolled plate Search Chameleon i in The coordinates after the number of iterations rotation, Search Chameleon i for rolled plate surface temperature The coordinates of the rotation center at the iteration number, ,in Search Chameleon i for rolled plate surface temperature Centering coordinates for iteration number, ; The rotation matrix representing the rotation of the position of the chameleon i in the surface temperature search of the rolled plate, ,in , are two orthogonal vectors in the coordinate space, and R represents the rotation matrix in each axis; is the rotation angle of the chameleon's eyes searching for the surface temperature of the rolled plate, , It is a random value in [0,1], sgn(rand-0.5) takes the value 1 or -1;

[0029] Step 3: Capture the prey. The chameleon that is close to the prey should be the best positioned one. This chameleon attacks the prey with its tongue. Its position is updated because its tongue can drop to twice its original length. The speed of the chameleon's tongue falling toward the prey is defined as:

[0030] , where , Search for chameleon i in dimension j for the surface temperature of the rolled plate The location and number of iterations The number of iterations of the speed at which the tongue falls towards the prey, = =1.75Control and Effects on tongue velocity, The update method is , where T represents the maximum number of iterations, t represents the current number of iterations, =1 is a parameter that controls the development ability, and when the tongue of the rolling plate surface temperature searching chameleon is projected toward the prey, its position implicitly indicates the position of the rolling plate surface temperature searching chameleon;

[0031] Step 4: When the chameleon search of the surface temperature of the rolled plate meets the maximum number of iterations, the temperature distribution data set of the surface width direction of the rolled plate is output. , when the chameleon search for the surface temperature of the rolled plate does not meet the maximum number of iterations, continue to execute steps 1 to 3 until the chameleon search for the surface temperature of the rolled plate meets the maximum number of iterations.

[0032] Preferably, the steps of establishing a mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed based on the temperature distribution data of the rolled plate surface in the width direction and the relationship between the surface cooling of the rolled plate and calculating and outputting the data of the amount of coolant sprayed in the width direction of the rolled plate surface are as follows:

[0033] S41. Obtaining a data set of temperature distribution in the width direction of the rolled plate surface ;

[0034] S42. Establish the mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed ,in Indicates the surface temperature of the rolled plate and the coolant spraying amount factor, is a fixed parameter, The value of is determined by the ratio of the surface temperature of the rolled plate to the amount of coolant sprayed in the practice of cooling the rolled plate. The temperature distribution data of the rolled plate surface in the width direction at the location where the thermoforming instrument thermal imaging temperature image is collected. Indicates the coolant spray flow rate. Since the plate conveying speed is the same during the rolling process, the coolant spraying time along the width direction of the rolled plate surface is the same. The amount of coolant spraying is positively correlated with the spray flow rate of each coolant spraying position in the width direction of the rolled plate surface.

[0035] S43, using the temperature distribution data set of the rolled plate surface in the width direction Temperature distribution data of the surface width of the rolled plate Combined with the mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed Calculate the coolant spray flow rate data of the thermal imaging temperature image data collection point in the width direction of the rolled plate surface corresponding to the thermal imager.

[0036] Preferably, after the surface of the rolled plate is cooled and rolled, the thickness data of the rolled plate surface in the width direction is numerically compared with the designed thickness data of the rolled plate in the width direction, and the operation steps of calculating and outputting the thickness error data of the rolled plate in the width direction are as follows:

[0037] S51. Obtaining a data set of thickness in the width direction of a standard rolled plate surface ;

[0038] S52. Establish design thickness data for rolled plate in width direction , The size depends on the model, material and specification of the rolled plate;

[0039] S53, collect the thickness data of the standard rolled plate surface in the width direction All standard rolled plate surface width direction thickness data Design thickness data of rolled plate in width direction Perform difference comparison calculation to generate the thickness error data set of the rolled plate in the width direction , ;in Indicates the width direction of the rolled plate. Standard rolled plate surface width direction thickness data Design thickness data of rolled plate in width direction Thickness error data of rolled plate in width direction, Indicates the maximum value of the thickness error data in the width direction of the rolled plate. Pick and The absolute value of the difference calculation result is taken. During the plate rolling process, the rolling mill usually rolls the large-sized plate into a small-sized plate of a certain shape. Therefore, after the plate is rolled, the thickness specification of the rolled plate meets the design specification requirements and the thickness specification of the rolled plate is greater than the design specification requirements.

[0040] Preferably, the operation steps of measuring and analyzing the thickness error data of the rolled plate in the width direction by using a statistical method to obtain the mean value data of the thickness error in the width direction of the rolled plate are as follows:

[0041] S61. Obtaining a data set of thickness error in the width direction of the rolled plate ;

[0042] S62, calculate the thickness error data set of the rolled plate in the width direction All the thickness error data of rolled plates in the width direction The mean value of thickness error in the width direction of rolled plate .

[0043] Preferably, the operation steps of calling the mean value data of thickness error in the width direction of the rolled plate to adjust the distance between the working rolls of the rolling mill to eliminate the thickness processing error of the rolled plate are as follows:

[0044] S71. Obtaining the mean value data of thickness error in the width direction of the rolled plate And based on The numerical value controls the movement of the working rolls of the rolling mill to reduce the distance between the two working rolls and eliminate the thickness processing error of the rolled plate.

[0045] An operating system for implementing the rolling mill thermal imaging plate shape control method, the system comprises a rolling plate surface temperature and plate thickness data acquisition module, a rolling plate surface coolant spraying amount processing module, a rolling plate width direction thickness error analysis module, and a rolling plate width direction thickness error adjustment module;

[0046] The rolled plate surface temperature and plate thickness data acquisition module includes a rolled plate surface width direction thermal imaging temperature image data acquisition unit, a rolled plate width direction thickness data acquisition unit, and a rolled plate thermal imaging temperature image and thickness data preprocessing unit;

[0047] The rolled plate surface width direction thermal imaging temperature image data acquisition unit uses a hot forming instrument to acquire the rolled plate surface width direction thermal imaging temperature image data at the input side of the rolling mill; the rolled plate width direction thickness data acquisition unit uses a high-temperature laser position sensor to acquire the rolled plate surface width direction thickness data at the output side of the rolling mill; the rolled plate thermal imaging temperature image and thickness data preprocessing unit uses a Gaussian filtering algorithm to perform data noise reduction preprocessing on the rolled plate surface width direction thermal imaging temperature image data and the rolled plate surface width direction thickness data;

[0048] The rolling plate surface coolant spraying amount processing module includes a rolling plate thermal imaging temperature value recognition image data storage unit, a rolling plate surface width direction temperature measurement unit, and a rolling plate surface width direction coolant spraying amount metering unit;

[0049] The rolled plate thermal imaging temperature numerical recognition image data storage unit is used to store rolled plate thermal imaging temperature numerical recognition image data; the rolled plate surface width direction temperature measurement unit uses an image recognition algorithm to measure the pre-processed rolled plate surface width direction thermal imaging temperature image data and the rolled plate thermal imaging temperature numerical recognition image data, and outputs the rolled plate surface width direction temperature distribution data; the rolled plate surface width direction coolant spray quantity metering unit establishes a mathematical formula of rolled plate surface temperature and coolant spray quantity based on the relationship between the rolled plate surface width direction temperature distribution data and the rolled plate surface cooling, and calculates and outputs the rolled plate surface width direction coolant spray quantity data;

[0050] The rolled plate width direction thickness error analysis module includes a rolled plate width direction design thickness data storage unit, a rolled plate width direction thickness error data measurement unit, and a rolled plate width direction thickness error data statistical analysis unit;

[0051] The storage unit for the designed thickness data in the width direction of the rolled plate is used to store the designed thickness data in the width direction of the rolled plate; the measurement unit for the thickness error data in the width direction of the rolled plate is used to compare the thickness data in the width direction of the rolled plate surface with the designed thickness data in the width direction of the rolled plate after the rolled plate surface is cooled and rolled, and calculate and output the thickness error data in the width direction of the rolled plate; the statistical analysis unit for the thickness error data in the width direction of the rolled plate is used to measure and analyze the thickness error data in the width direction of the rolled plate using a statistical method to obtain the mean value data of the thickness error in the width direction of the rolled plate;

[0052] The rolled plate width direction thickness error adjustment module comprises a rolled plate width direction thickness error statistical data calling unit and a rolled plate width direction thickness error adjustment execution unit;

[0053] The rolled plate width direction thickness error statistical data calling unit is used to call the rolled plate width direction thickness error mean data; the rolled plate width direction thickness error adjustment execution unit adjusts the distance between the rolling mill working rolls according to the rolled plate width direction thickness error mean data to eliminate the rolled plate thickness processing error.

[0054] (III) Beneficial effects

[0055] The present invention provides a rolling mill thermal imaging plate shape control method, which has the following beneficial effects:

[0056] 1. Through the cooperation of the thermal imaging temperature image data acquisition unit in the width direction of the rolled plate surface and the thickness data acquisition unit in the width direction of the rolled plate surface, multiple sets of hot forming instruments and high-temperature laser position sensors are used to uniformly and accurately collect the thermal imaging temperature image data in the width direction of the rolled plate surface and the thickness data in the width direction of the rolled plate surface at the input side and output side of the rolling mill, thereby realizing point-to-point precise measurement of the surface temperature on the input side of the rolled plate, improving the differentiated operation of the surface cooling operation of the rolled plate, and also realizing point-to-point scientific measurement of the thickness on the output side of the rolled plate, ensuring accurate feedback of the plate shape results of the rolled plate.

[0057] 2. The temperature measurement unit on the width direction of the rolled plate surface uses the chameleon optimization algorithm to identify and measure the temperature distribution data on the width direction of the rolled plate surface by combining the thermal imaging temperature image data on the width direction of the standard rolled plate surface with the thermal imaging temperature numerical recognition image data on the rolled plate surface, thereby achieving safe and reliable measurement of the temperature on the surface of the rolled plate; the coolant spray amount metering unit on the width direction of the rolled plate surface accurately measures the coolant spray amount data of the temperature measurement points along the width of the rolled plate surface based on the temperature distribution data on the width direction of the rolled plate surface and the relationship between the surface temperature of the rolled plate and the coolant spray amount, thereby ensuring uniform cooling temperature on the surface of the rolled plate and improving the consistency of the rolled plate shape.

[0058] 3. The error data of the thickness of the rolled plate in the width direction is calculated by numerically subtracting the thickness data of the rolled plate surface in the width direction from the design thickness data of the rolled plate in the width direction, so as to realize the online precise measurement and feedback of the thickness error of the rolled plate; at the same time, the statistical analysis unit of the thickness error data in the width direction of the rolled plate performs mean processing on the thickness error data in the width direction of the rolled plate, calculates the mean value of the thickness error of the rolled plate, and ensures the scientific and uniform adjustment of the thickness of the rolled plate; the thickness error adjustment execution unit in the width direction of the rolled plate adjusts the distance between the working rolls of the rolling mill based on the mean value data of the thickness error in the width direction of the rolled plate to eliminate the thickness processing error of the rolled plate, realizes the automatic analysis, measurement and adjustment of the thickness of the rolled plate, and ensures the quality and efficiency of the plate shape of the rolled plate of the rolling mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 A diagram of the operating system composition of a rolling mill thermal imaging plate shape control method provided by the present invention;

[0060] Figure 2 for Figure 1 The figure shows an operation structure diagram of a rolling mill thermal imaging plate shape control method. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] The embodiment of the rolling mill thermal imaging plate shape control method is as follows:

[0063] See also Figure 1 - Figure 2 , a rolling mill thermal imaging plate shape control method, the method comprising the following steps:

[0064] S1, collecting thermal imaging temperature image data of the rolled plate surface in the width direction at the input side of the rolling mill and thickness data of the rolled plate surface in the width direction at the output side of the rolling mill;

[0065] S2, preprocessing the thermal imaging temperature image data in the width direction of the rolled plate surface and the thickness data in the width direction of the rolled plate surface;

[0066] S3, using an image recognition algorithm to measure the pre-processed thermal imaging temperature image data of the rolled plate surface in the width direction and the thermal imaging temperature numerical recognition image data of the rolled plate, and outputting the temperature distribution data of the rolled plate surface in the width direction;

[0067] S4. Establishing a mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed according to the temperature distribution data of the rolled plate surface in the width direction and the relationship between the surface cooling of the rolled plate, and calculating and outputting the data of the amount of coolant sprayed in the width direction of the rolled plate surface;

[0068] S5. After the surface of the rolled plate is cooled and rolled, numerical comparison is performed based on the thickness data of the rolled plate surface in the width direction and the designed thickness data of the rolled plate in the width direction, and the thickness error data of the rolled plate in the width direction is calculated and output;

[0069] S6. Analyzing the thickness error data of the rolled plate in the width direction by using a statistical method to obtain the mean value data of the thickness error in the width direction of the rolled plate;

[0070] S7. Call the mean value data of thickness error in the width direction of the rolled plate to adjust the distance between the working rolls of the rolling mill to eliminate the thickness processing error of the rolled plate.

[0071] For further information, see Figure 1 - Figure 2 The operation steps for collecting the thermal imaging temperature image data of the rolled plate surface width direction at the input side of the rolling mill and the thickness data of the rolled plate surface width direction at the output side of the rolling mill are as follows:

[0072] S11, using multiple groups of thermal imagers horizontally arranged along the width direction of the rolled plate to collect online thermal imaging temperature image data of the rolled plate surface width direction at the input side of the rolling mill and establish a collection , ;in Indicates the width direction of the rolled plate. The thermal imaging temperature image data of the rolled plate surface width direction collected by the thermal imager, Indicates the maximum value of the number of thermal imaging temperature image data in the width direction of the rolled plate surface;

[0073] S12, multiple groups of high-temperature laser position sensors are horizontally arranged along the width direction of the rolled plate to collect online the thickness data of the rolled plate surface in the width direction at the output side of the rolling mill and establish a collection , ;in Indicates the width direction of the rolled plate. The thickness data of the rolled plate surface in the width direction is collected by a high-temperature laser position sensor. Indicates the maximum value of the thickness data in the width direction of the rolled plate surface.

[0074] The steps for data preprocessing of thermal imaging temperature image data in the width direction of the rolled plate surface and thickness data in the width direction of the rolled plate surface are as follows:

[0075] S21. Using Gaussian filtering algorithm to collect thermal imaging temperature image data in the width direction of the rolled plate surface and the thickness data set of the rolled plate surface in the width direction Perform data noise reduction preprocessing to generate standard rolled plate surface width direction thermal imaging temperature image data sets and standard rolled plate surface width thickness data set .

[0076] By cooperating with the thermal imaging temperature image data acquisition unit in the width direction of the rolled plate surface and the thickness data acquisition unit in the width direction of the rolled plate, multiple sets of hot forming instruments and high-temperature laser position sensors are used to uniformly and accurately collect the thermal imaging temperature image data in the width direction of the rolled plate surface and the thickness data in the width direction of the rolled plate surface at the input side and output side of the rolling mill, thereby realizing point-to-point precise measurement of the surface temperature on the input side of the rolled plate, improving the differentiated operation of the surface cooling operation of the rolled plate, and also realizing point-to-point scientific measurement of the thickness on the output side of the rolled plate, ensuring accurate feedback of the plate shape results of the rolled plate.

[0077] For further information, see Figure 1 - Figure 2 The steps of measuring the pre-processed thermal imaging temperature image data in the width direction of the rolled plate surface and the thermal imaging temperature numerical recognition image data of the rolled plate surface using the image recognition algorithm and outputting the temperature distribution data in the width direction of the rolled plate surface are as follows:

[0078] S31. Obtaining a thermal imaging temperature image data set in the width direction of the standard rolled plate surface

[0079] S32. Establishing a rolled plate thermal imaging temperature numerical recognition image data set , ;in Indicates A kind of rolled plate thermal imaging temperature numerical recognition image data, Indicates the maximum value of the number of rolled plate thermal imaging temperature numerical recognition image data;

[0080] S33, using image recognition algorithm to collect thermal imaging temperature image data of standard rolled plate surface width direction Thermal imaging temperature image data of the surface width direction of standard rolled plate Thermal imaging temperature numerical recognition image data set of rolled plate Thermal imaging temperature numerical recognition image data of rolled plate Image matching is used to measure the thermal imaging temperature image data of the standard rolled plate surface in the width direction. Corresponding temperature distribution data of the rolled plate surface in the width direction And create a collection ,in Indicates Thermal imaging temperature image data of standard rolled plate surface width direction Corresponding temperature distribution data of the rolled plate surface in the width direction;

[0081] The image recognition algorithm consists of the following steps:

[0082] Step 1: Set the maximum number of iterations T, search for prey, and search for the surface temperature of the rolled plate. To solve the problem of food and clothing, the chameleon begins to search for prey, that is, in the rolled plate thermal imaging temperature numerical recognition image data set. Search and standard rolled plate surface width direction thermal imaging temperature image data Matching rolled plate thermal imaging temperature numerical recognition image data , the search formula for prey is

[0083] ,in , Search for chameleon i in dimension j for the surface temperature of the rolled plate The location and number of iterations The position of the iteration number, where dimension j corresponds to the dimension A data set of rolled plate thermal imaging temperature numerical recognition images Search space, for The current optimal individual position in the search space of dimension j after the number of iterations; Search Chameleon i for rolled plate surface temperature The best position in the search space of dimension j after the number of iterations; , are two parameters that control exploration capabilities; , , are all random numbers in [0,1]. represent , , , represents the probability of the surface temperature of the rolling plate searching chameleon sensing its prey, , They represent the upper and lower limits of the jth dimension, that is, the image data set of the thermal imaging temperature numerical recognition of the rolled plate The upper and lower limits, sgn(rand-0.5), take the value of 1 or -1, which affects the direction of exploration and development;

[0084] Step 2: Prey positioning. The eyes of the rolling plate surface temperature search chameleon move independently. They are able to skillfully explore space to locate prey. Their eyes can look in two different directions at the same time and rotate and focus at the same time, so that they can see the panoramic view of the surroundings. In order to simulate this process, the author made four settings: translate the original position of the rolling plate surface temperature search chameleon to the center of gravity, find the rotation matrix that identifies the prey position, use the rotation matrix at the center of gravity to update the position of the rolling plate surface temperature search chameleon, and move the rolling plate surface temperature search chameleon back to the original position;

[0085] This stage simulates the surface temperature of the rolling plate. The position of the search chameleon when it locates the prey by rotating its eyes is updated as

[0086] , where for The average position of each dimension of the surface temperature of the rolling plate before the position rotation after the number of iterations. Indicates the surface temperature of the rolled plate Search Chameleon i in The coordinates after the number of iterations rotation, Search Chameleon i for rolled plate surface temperature The coordinates of the rotation center at the iteration number, ,in Search Chameleon i for rolled plate surface temperature Centering coordinates for iteration number, ; The rotation matrix representing the rotation of the position of the chameleon i in the surface temperature search of the rolled plate, ,in , are two orthogonal vectors in the coordinate space, and R represents the rotation matrix in each axis; is the rotation angle of the chameleon's eyes searching for the surface temperature of the rolled plate, , It is a random value in [0,1], sgn(rand-0.5) takes the value 1 or -1;

[0087] Step 3: Capture the prey. The chameleon that is close to the prey should be the best positioned one. This chameleon attacks the prey with its tongue. Its position is updated because its tongue can drop to twice its original length. The speed of the chameleon's tongue falling toward the prey is defined as:

[0088] , where , Search for chameleon i in dimension j for the surface temperature of the rolled plate The location and number of iterations The number of iterations of the speed at which the tongue falls towards the prey, = =1.75Control and Effects on tongue speed, The update method is , where T represents the maximum number of iterations, t represents the current number of iterations, =1 is a parameter that controls the development ability, and when the tongue of the rolling plate surface temperature searching chameleon is projected toward the prey, its position implicitly indicates the position of the rolling plate surface temperature searching chameleon;

[0089] Step 4: When the chameleon search of the surface temperature of the rolled plate meets the maximum number of iterations, the temperature distribution data set of the surface width direction of the rolled plate is output. , when the chameleon search for the surface temperature of the rolled plate does not meet the maximum number of iterations, continue to execute steps 1 to 3 until the chameleon search for the surface temperature of the rolled plate meets the maximum number of iterations.

[0090] According to the temperature distribution data of the rolled plate surface in the width direction and the relationship between the rolled plate surface cooling, the mathematical formula of the rolled plate surface temperature and the coolant spraying amount is established. The operation steps for calculating and outputting the coolant spraying amount data of the rolled plate surface in the width direction are as follows:

[0091] S41. Obtaining a data set of temperature distribution in the width direction of the rolled plate surface ;

[0092] S42. Establish the mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed ,in Indicates the surface temperature of the rolled plate and the coolant spraying amount factor, is a fixed parameter, The value of is determined by the ratio of the surface temperature of the rolled plate to the amount of coolant sprayed in the practice of cooling the rolled plate. The temperature distribution data of the rolled plate surface in the width direction at the location where the thermoforming instrument thermal imaging temperature image is collected. Indicates the coolant spray flow rate. Since the plate conveying speed is the same during the rolling process, the coolant spraying time along the width direction of the rolled plate surface is the same. The amount of coolant spraying is positively correlated with the spray flow rate of each coolant spraying position in the width direction of the rolled plate surface.

[0093] S43, using the temperature distribution data set of the rolled plate surface in the width direction Temperature distribution data of the surface width of the rolled plate Combined with the mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed Calculate the coolant spray flow rate data of the thermal imaging temperature image data collection point in the width direction of the rolled plate surface corresponding to the thermal imager.

[0094] The temperature measurement unit on the width direction of the rolled plate surface uses the chameleon optimization algorithm to identify and measure the temperature distribution data on the width direction of the rolled plate surface by combining the thermal imaging temperature image data on the width direction of the standard rolled plate surface with the thermal imaging temperature numerical recognition image data of the rolled plate surface, thereby realizing safe and reliable measurement of the temperature of the rolled plate surface; the coolant spray amount metering unit on the width direction of the rolled plate surface accurately measures the coolant spray amount data of the temperature measurement points along the width of the rolled plate surface based on the temperature distribution data on the width direction of the rolled plate surface and the relationship between the surface temperature of the rolled plate and the coolant spray amount, thereby ensuring the uniform cooling temperature on the surface of the rolled plate and improving the consistency of the rolled plate shape.

[0095] For further information, see Figure 1 - Figure 2 After the surface of the rolled plate is cooled and rolled, the thickness data of the rolled plate in the width direction is compared with the design thickness data of the rolled plate in the width direction, and the operation steps for calculating and outputting the thickness error data in the width direction of the rolled plate are as follows:

[0096] S51. Obtaining a data set of thickness in the width direction of a standard rolled plate surface ;

[0097] S52. Establish design thickness data for rolled plate in width direction , The size depends on the model, material and specification of the rolled plate;

[0098] S53, collect the thickness data of the standard rolled plate surface in the width direction All standard rolled plate surface width direction thickness data Design thickness data of rolled plate in width direction Perform difference comparison calculation to generate the thickness error data set of the rolled plate in the width direction , ;in Indicates the width direction of the rolled plate. Standard rolled plate surface width direction thickness data Design thickness data of rolled plate in width direction Thickness error data of rolled plate in width direction, Indicates the maximum value of the thickness error data in the width direction of the rolled plate. Pick and The absolute value of the difference calculation result is taken. During the plate rolling process, the rolling mill usually rolls the large-sized plate into a small-sized plate of a certain shape. Therefore, after the plate is rolled, the thickness specification of the rolled plate meets the design specification requirements and the thickness specification of the rolled plate is greater than the design specification requirements.

[0099] The steps for measuring and analyzing the thickness error data of the rolled plate in the width direction by using statistical methods to obtain the mean value data of the thickness error in the width direction of the rolled plate are as follows:

[0100] S61. Obtaining a data set of thickness error in the width direction of the rolled plate ;

[0101] S62, calculate the thickness error data set of the rolled plate in the width direction All the thickness error data of rolled plates in the width direction The mean value of thickness error in the width direction of rolled plate .

[0102] The steps for calling the mean value data of thickness error in the width direction of the rolled plate to adjust the distance between the working rolls of the rolling mill and eliminate the thickness processing error of the rolled plate are as follows:

[0103] S71. Obtaining the mean value data of thickness error in the width direction of the rolled plate And based on The numerical value controls the movement of the working rolls of the rolling mill, reduces the distance between the two working rolls, and eliminates the thickness processing error of the rolled plate.

[0104] The error data of the thickness of the rolled plate in the width direction is calculated by numerically subtracting the thickness data of the rolled plate surface in the width direction from the design thickness data of the rolled plate in the width direction, thereby realizing online precise measurement and feedback of the thickness error of the rolled plate; at the same time, the statistical analysis unit of the thickness error data in the width direction of the rolled plate performs mean processing on the thickness error data in the width direction of the rolled plate, calculates the mean value of the thickness error of the rolled plate, and ensures that the thickness of the rolled plate is scientifically and evenly adjusted; the thickness error adjustment execution unit of the rolled plate in the width direction adjusts the distance between the working rolls of the rolling mill based on the mean value data of the thickness error in the width direction of the rolled plate, thereby eliminating the thickness processing error of the rolled plate, realizing automatic analysis, measurement and adjustment of the thickness of the rolled plate, and ensuring the quality and efficiency of the plate shape of the rolled plate of the rolling mill.

[0105] An operating system for implementing a rolling mill thermal imaging plate shape control method, the system comprises a rolling plate surface temperature and plate thickness data acquisition module, a rolling plate surface coolant spraying amount processing module, a rolling plate width direction thickness error analysis module, and a rolling plate width direction thickness error adjustment module;

[0106] The rolled plate surface temperature and plate thickness data acquisition module includes a rolled plate surface width direction thermal imaging temperature image data acquisition unit, a rolled plate width direction thickness data acquisition unit, and a rolled plate thermal imaging temperature image and thickness data preprocessing unit;

[0107] The rolled plate surface width direction thermal imaging temperature image data acquisition unit uses a hot forming instrument to collect the rolled plate surface width direction thermal imaging temperature image data on the rolling mill input side; the rolled plate width direction thickness data acquisition unit uses a high-temperature laser position sensor to collect the rolled plate surface width direction thickness data on the rolling mill output side; the rolled plate thermal imaging temperature image and thickness data preprocessing unit uses a Gaussian filter algorithm to perform data noise reduction preprocessing on the rolled plate surface width direction thermal imaging temperature image data and the rolled plate surface width direction thickness data;

[0108] The rolling plate surface coolant spraying amount processing module includes a rolling plate thermal imaging temperature numerical recognition image data storage unit, a rolling plate surface width direction temperature measurement unit, and a rolling plate surface width direction coolant spraying amount metering unit;

[0109] The rolled plate thermal imaging temperature numerical recognition image data storage unit is used to store the rolled plate thermal imaging temperature numerical recognition image data; the rolled plate surface width direction temperature measurement unit uses the image recognition algorithm to measure the pre-processed rolled plate surface width direction thermal imaging temperature image data and the rolled plate thermal imaging temperature numerical recognition image data, and outputs the rolled plate surface width direction temperature distribution data; the rolled plate surface width direction coolant spray quantity metering unit establishes the rolled plate surface temperature and coolant spray quantity mathematical formula according to the rolled plate surface width direction temperature distribution data and the rolled plate surface cooling relationship, and calculates and outputs the rolled plate surface width direction coolant spray quantity data;

[0110] The thickness error analysis module of the rolled plate in the width direction includes a storage unit for the designed thickness data of the rolled plate in the width direction, a measurement unit for the thickness error data of the rolled plate in the width direction, and a statistical analysis unit for the thickness error data of the rolled plate in the width direction;

[0111] The storage unit for the designed thickness data in the width direction of the rolled plate is used to store the designed thickness data in the width direction of the rolled plate; the measurement unit for the thickness error data in the width direction of the rolled plate is used to compare the thickness data in the width direction of the rolled plate surface with the designed thickness data in the width direction of the rolled plate after the rolled plate surface is cooled and rolled, and calculate and output the thickness error data in the width direction of the rolled plate; the statistical analysis unit for the thickness error data in the width direction of the rolled plate is used to measure and analyze the thickness error data in the width direction of the rolled plate using a statistical method to obtain the mean value data of the thickness error in the width direction of the rolled plate;

[0112] The thickness error adjustment module of the rolled plate in the width direction includes a rolled plate in the width direction thickness error statistical data calling unit and a rolled plate in the width direction thickness error adjustment execution unit;

[0113] The rolled plate width direction thickness error statistical data calling unit is used to call the rolled plate width direction thickness error mean data; the rolled plate width direction thickness error adjustment execution unit adjusts the distance between the rolling mill working rolls according to the rolled plate width direction thickness error mean data to eliminate the rolled plate thickness processing error.

[0114] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rolling mill thermal imaging plate shape control method, It is characterized in that The method comprises the following steps: S1, collecting thermal imaging temperature image data of the rolled plate surface width direction at the rolling mill input side and thickness data of the rolled plate surface width direction at the rolling mill output side, wherein S1 comprises the following steps: S11, using multiple groups of thermal imagers horizontally arranged along the width direction of the rolled plate to collect online thermal imaging temperature image data of the rolled plate surface width direction at the input side of the rolling mill and establish a collection , ;in Indicates the width direction of the rolled plate. The thermal imaging temperature image data of the rolled plate surface width direction collected by the thermal imager, Indicates the maximum value of the number of thermal imaging temperature image data in the width direction of the rolled plate surface; S12, multiple groups of high-temperature laser position sensors are horizontally arranged along the width direction of the rolled plate to collect online the thickness data of the rolled plate surface in the width direction at the output side of the rolling mill and establish a collection , ;in Indicates the width direction of the rolled plate. The thickness data of the rolled plate surface in the width direction is collected by a high-temperature laser position sensor. Indicates the maximum value of the thickness data in the width direction of the rolled plate surface; S2, preprocessing the thermal imaging temperature image data in the width direction of the rolled plate surface and the thickness data in the width direction of the rolled plate surface, wherein S2 comprises the following steps: S21. Using Gaussian filtering algorithm to collect thermal imaging temperature image data in the width direction of the rolled plate surface and the thickness data set of the rolled plate surface in the width direction Perform data noise reduction preprocessing to generate standard rolled plate surface width direction thermal imaging temperature image data sets and standard rolled plate surface width thickness data set ; S3, using an image recognition algorithm to measure the pre-processed thermal imaging temperature image data of the rolled plate surface in the width direction and the thermal imaging temperature numerical recognition image data of the rolled plate, and outputting the temperature distribution data of the rolled plate surface in the width direction, wherein S3 comprises the following steps: S31. Obtaining a thermal imaging temperature image data set in the width direction of the standard rolled plate surface S32. Establishing a rolled plate thermal imaging temperature numerical recognition image data set , ;in Indicates A kind of rolled plate thermal imaging temperature numerical recognition image data, Indicates the maximum value of the number of rolled plate thermal imaging temperature numerical recognition image data; S33, using image recognition algorithm to collect thermal imaging temperature image data of standard rolled plate surface width direction Thermal imaging temperature image data of the surface width direction of standard rolled plate Thermal imaging temperature numerical recognition image data set of rolled plate Thermal imaging temperature numerical recognition image data of rolled plate Image matching is used to measure the thermal imaging temperature image data of the standard rolled plate surface in the width direction. Corresponding temperature distribution data of the rolled plate surface in the width direction And create a collection ,in Indicates Thermal imaging temperature image data of standard rolled plate surface width direction Corresponding temperature distribution data of the rolled plate surface in the width direction; The image recognition algorithm consists of the following steps: Step 1: Set the maximum number of iterations T, search for prey, and search for the surface temperature of the rolled plate. To solve the problem of food and clothing, the chameleon begins to search for prey, that is, in the rolled plate thermal imaging temperature numerical recognition image data set. Search and standard rolled plate surface width direction thermal imaging temperature image data Matching rolled plate thermal imaging temperature numerical recognition image data , the search formula for prey is ,in , Search for chameleon i in dimension j for the surface temperature of the rolled plate The location and number of iterations The position of the iteration number, where dimension j corresponds to the dimension A data set of thermal imaging temperature numerical recognition images of rolled plates Search space, for The current optimal individual position in the search space of dimension j after the number of iterations; Search Chameleon i for rolled plate surface temperature The best position in the search space of dimension j after the number of iterations; , are two parameters that control exploration capabilities; , , are all random numbers in [0,1]. represent , , , represents the probability of the surface temperature of the rolling plate searching chameleon sensing its prey, , They represent the upper and lower limits of the jth dimension, that is, the image data set of the thermal imaging temperature numerical recognition of the rolled plate The upper and lower limits, sgn(rand-0.5), take the value of 1 or -1, which affects the direction of exploration and development; Step 2: Prey positioning. The eyes of the rolling plate surface temperature search chameleon move independently. They are able to skillfully explore space to locate prey. Their eyes can look in two different directions at the same time and rotate and focus at the same time, so that they can see the panoramic view of the surroundings. In order to simulate this process, the author made four settings: translate the original position of the rolling plate surface temperature search chameleon to the center of gravity, find the rotation matrix that identifies the prey position, use the rotation matrix at the center of gravity to update the position of the rolling plate surface temperature search chameleon, and move the rolling plate surface temperature search chameleon back to the original position; This stage simulates the surface temperature of the rolling plate. The position of the search chameleon when it locates the prey by rotating its eyes is updated as , where for The average position of each dimension of the surface temperature of the rolling plate before the position rotation after the number of iterations. Indicates the surface temperature of the rolled plate Search Chameleon i in The coordinates after the number of iterations rotation, Search Chameleon i for rolled plate surface temperature The coordinates of the rotation center at the iteration number, ,in Search Chameleon i for rolled plate surface temperature Centering coordinates for iteration number, ; The rotation matrix representing the rotation of the position of the chameleon i in the surface temperature search of the rolled plate, ,in , are two orthogonal vectors in the coordinate space, and R represents the rotation matrix in each axis; is the rotation angle of the chameleon's eyes searching for the surface temperature of the rolled plate, , It is a random value in [0,1], sgn(rand-0.5) takes the value 1 or -1; Step 3: Capture the prey. The chameleon that is close to the prey should be the best positioned one. This chameleon attacks the prey with its tongue. Its position is updated because its tongue can drop to twice its original length. The speed of the chameleon's tongue falling toward the prey is defined as: , where , Search for chameleon i in dimension j for the surface temperature of the rolled plate The location and number of iterations The number of iterations of the speed at which the tongue falls towards the prey, = =1.75Control and Effects on tongue velocity, The update method is , where T represents the maximum number of iterations, t represents the current number of iterations, =1 is a parameter that controls the development ability, and when the tongue of the rolling plate surface temperature searching chameleon is projected toward the prey, its position implicitly indicates the position of the rolling plate surface temperature searching chameleon; Step 4: When the chameleon search of the surface temperature of the rolled plate meets the maximum number of iterations, the temperature distribution data set of the surface width direction of the rolled plate is output. , when the chameleon search for the surface temperature of the rolled plate does not meet the maximum number of iterations, continue to perform steps 1 to 3 until the chameleon search for the surface temperature of the rolled plate meets the maximum number of iterations; S4, establishing a mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed according to the temperature distribution data of the rolled plate surface in the width direction and the relationship between the surface cooling of the rolled plate, and calculating and outputting the data of the amount of coolant sprayed in the width direction of the rolled plate surface, wherein S4 comprises the following steps: S41. Obtaining a data set of temperature distribution in the width direction of the rolled plate surface ; S42. Establish the mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed ,in Indicates the surface temperature of the rolled plate and the coolant spraying amount factor, is a fixed parameter, The value of is determined by the ratio of the surface temperature of the rolled plate to the amount of coolant sprayed in the practice of cooling the rolled plate. The temperature distribution data of the rolled plate surface in the width direction at the location where the thermoforming instrument thermal imaging temperature image is collected. Indicates the coolant spray flow rate. Since the plate conveying speed is the same during the rolling process, the coolant spraying time along the width direction of the rolled plate surface is the same. The amount of coolant spraying is positively correlated with the spray flow rate of each coolant spraying position in the width direction of the rolled plate surface. S43, using the temperature distribution data set of the rolled plate surface in the width direction Temperature distribution data of the surface width of the rolled plate Combined with the mathematical formula of the surface temperature of the rolled plate and the amount of coolant sprayed Calculate the coolant spray flow rate data of the thermal imaging temperature image data collection point in the width direction of the rolled plate surface corresponding to the thermal imager; S5, after the surface of the rolled plate is cooled and rolled, numerical comparison is performed based on the thickness data of the rolled plate surface in the width direction and the designed thickness data of the rolled plate in the width direction, and the thickness error data of the rolled plate in the width direction is calculated and output, wherein S5 comprises the following steps: S51. Obtaining a data set of thickness in the width direction of a standard rolled plate surface ; S52. Establish design thickness data for rolled plate in width direction , The size depends on the model, material and specification of the rolled plate; S53, collect the thickness data of the standard rolled plate surface in the width direction All standard rolled plate surface width direction thickness data Design thickness data of rolled plate in width direction Perform difference comparison calculation to generate the thickness error data set of the rolled plate in the width direction , ;in Indicates the width direction of the rolled plate. Standard rolled plate surface width direction thickness data Design thickness data of rolled plate in width direction Thickness error data of rolled plate in width direction, Indicates the maximum value of the thickness error data in the width direction of the rolled plate. Pick and The absolute value of the difference calculation result is taken. In the process of rolling the plate, the rolling mill usually rolls the large-sized plate into a small-sized plate of a certain shape. Therefore, after the plate is rolled, the thickness specification of the rolled plate meets the design specification requirements and the thickness specification of the rolled plate exceeds the design specification requirements. S6, using a statistical method to measure and analyze the thickness error data of the rolled plate in the width direction to obtain the mean value data of the thickness error in the width direction of the rolled plate, wherein S6 comprises the following steps: S61. Obtaining a data set of thickness error in the width direction of the rolled plate ; S62, calculate the thickness error data set of the rolled plate in the width direction All the thickness error data of rolled plates in the width direction The mean value of thickness error in the width direction of rolled plate ; S7, calling the mean value data of thickness error in the width direction of the rolled plate to adjust the distance between the working rolls of the rolling mill to eliminate the thickness processing error of the rolled plate, wherein S7 comprises the following steps: S71. Obtaining the mean value data of thickness error in the width direction of the rolled plate And based on The numerical value controls the movement of the working rolls of the rolling mill, reduces the distance between the two working rolls, and eliminates the thickness processing error of the rolled plate.

2. An operating system for implementing the rolling mill thermal imaging plate shape control method according to claim 1, It is characterized in that The system includes a module for acquiring the surface temperature and thickness data of a rolled plate, a module for processing the amount of coolant sprayed on the surface of a rolled plate, a module for analyzing the thickness error in the width direction of the rolled plate, and a module for adjusting the thickness error in the width direction of the rolled plate; The rolled plate surface temperature and plate thickness data acquisition module includes a rolled plate surface width direction thermal imaging temperature image data acquisition unit, a rolled plate width direction thickness data acquisition unit, and a rolled plate thermal imaging temperature image and thickness data preprocessing unit; The rolled plate surface width direction thermal imaging temperature image data acquisition unit uses a hot forming instrument to acquire the rolled plate surface width direction thermal imaging temperature image data at the input side of the rolling mill; the rolled plate width direction thickness data acquisition unit uses a high-temperature laser position sensor to acquire the rolled plate surface width direction thickness data at the output side of the rolling mill; the rolled plate thermal imaging temperature image and thickness data preprocessing unit uses a Gaussian filtering algorithm to perform data noise reduction preprocessing on the rolled plate surface width direction thermal imaging temperature image data and the rolled plate surface width direction thickness data; The rolling plate surface coolant spraying amount processing module includes a rolling plate thermal imaging temperature value recognition image data storage unit, a rolling plate surface width direction temperature measurement unit, and a rolling plate surface width direction coolant spraying amount metering unit; The rolled plate thermal imaging temperature numerical recognition image data storage unit is used to store rolled plate thermal imaging temperature numerical recognition image data; the rolled plate surface width direction temperature measurement unit uses an image recognition algorithm to measure the pre-processed rolled plate surface width direction thermal imaging temperature image data and the rolled plate thermal imaging temperature numerical recognition image data, and outputs the rolled plate surface width direction temperature distribution data; the rolled plate surface width direction coolant spray quantity metering unit establishes a mathematical formula of rolled plate surface temperature and coolant spray quantity based on the relationship between the rolled plate surface width direction temperature distribution data and the rolled plate surface cooling, and calculates and outputs the rolled plate surface width direction coolant spray quantity data; The rolled plate width direction thickness error analysis module includes a rolled plate width direction design thickness data storage unit, a rolled plate width direction thickness error data measurement unit, and a rolled plate width direction thickness error data statistical analysis unit; The storage unit for the designed thickness data in the width direction of the rolled plate is used to store the designed thickness data in the width direction of the rolled plate; the measurement unit for the thickness error data in the width direction of the rolled plate is used to compare the thickness data in the width direction of the rolled plate surface with the designed thickness data in the width direction of the rolled plate after the rolled plate surface is cooled and rolled, and calculate and output the thickness error data in the width direction of the rolled plate; the statistical analysis unit for the thickness error data in the width direction of the rolled plate is used to measure and analyze the thickness error data in the width direction of the rolled plate using a statistical method to obtain the mean value data of the thickness error in the width direction of the rolled plate; The rolled plate width direction thickness error adjustment module comprises a rolled plate width direction thickness error statistical data calling unit and a rolled plate width direction thickness error adjustment execution unit; The rolled plate width direction thickness error statistical data calling unit is used to call the rolled plate width direction thickness error mean data; the rolled plate width direction thickness error adjustment execution unit adjusts the distance between the rolling mill working rolls according to the rolled plate width direction thickness error mean data to eliminate the rolled plate thickness processing error.

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