Multi-sensor equipment coordinated thickness control system for aluminum strip production and rolling

Abstract

The present invention discloses a multi-sensor coordinated thickness control system for aluminum sheet and strip production and rolling, which relates to the field of metal processing and includes a rolling pre-test module, a data acquisition module, a feedback control module, and an aluminum sheet and strip acceptance module. The present invention provides a multi-sensor coordinated thickness control system for aluminum sheet and strip production and rolling, integrating multiple modules to form a closed-loop automated rolling control system. Based on real-time monitoring and feedback control, the thickness of the aluminum sheet and strip is precisely controlled to reduce errors. By screening out sensor devices that are not functioning properly in advance, it is ensured that the sensor devices can accurately detect and respond at critical moments. The abnormal rolling pre-test values of each sensor device are used as influencing factors to correct the real-time rolling assessment values of each sub-rolling area of the aluminum sheet and strip, thereby improving measurement accuracy.

Description

Technical Field

[0001] The present invention relates to the field of metal processing, and in particular to a multi-sensor equipment coordinated thickness control system for aluminum plate and strip production and rolling. Background Art

[0002] During the aluminum sheet rolling process, the material's mechanical properties and temperature change, affecting the rolling results. These changes require real-time monitoring and rapid adjustment of rolling parameters. Furthermore, with the continuous progress of industrialization, the requirements for the accuracy of aluminum sheet and strip thickness are becoming increasingly stringent, requiring precise automatic control to achieve high-precision aluminum sheet and strip production and rolling.

[0003] The prior art, such as the invention patent with announcement number: CN107881426B, is a high-strength aluminum-clad plate and strip and a production method. The high-strength aluminum-clad plate and strip is a composite structure of aluminum strip and steel strip. The chemical composition weight percentage of the steel strip is: C: 0.03-0.06%, 0<Si≤0.005%, Mn: 0.4-0.8%, P≤0.015%, S≤0.005%, Al≤0.005%, N: 0.0062-0.02%, O: 0.006-0.05%, Ca: 0.002-0.004%, Ti: 0.01-0.03%, and the rest are Fe and unavoidable impurities; and at the same time, O+N≥0.013%, 0.5≤(O+N) / (P+S)≤5. The aluminum-clad strip of the present invention has the high strength of steel, with a yield strength of 280-400MPa, a tensile strength of more than 420MPa, and an elongation of more than 28%. It also has good plasticity and cold bending, stamping processing properties, as well as the corrosion resistance, heat dissipation and aesthetic characteristics of aluminum. It can be used in the production of radiators, plates, wheels and corrosion-resistant boxes.

[0004] The prior art, such as the invention patent with announcement number: CN107881412B, is a lightweight aluminum-clad plate and strip and its production method, which is a composite structure of aluminum strip and steel strip. The chemical composition weight percentage of the steel strip is: C: 0.04-0.08%, 0<Si≤0.005%, Mn: 0.9-1.8%, P≤0.015%, S≤0.005%, Al≤0.005%, N: 0.0062-0.02%, O: 0.006-0.05%, Ca: 0.002-0.004%, Ti: 0.01-0.03%, Nb: 0.01-0.03%, and the rest are Fe and unavoidable impurities; at the same time, O+N≥0.013%, and 0.5≤(O+N) / (P+S)≤5. The aluminum-clad plate strip of the present invention has a yield strength of more than 400 MPa, a tensile strength of 500-800 MPa, and an elongation A50% of more than 18%. It has the strength of steel, good plasticity, and cold bending and stamping processing properties, while having the corrosion resistance, heat dissipation and aesthetics of aluminum. It can be used in the production of radiators, plates and wheels, and can achieve lightweight design.

[0005] Based on the above scheme, it can be seen that the existing aluminum sheet and strip production and manufacturing technology often only focuses on controlling the production process, and the actual control will be affected by the performance of the device. In actual production, there may be problems of untimely control or poor control quality. Therefore, it is necessary to monitor the sensors and control equipment in the automatic control system of the aluminum sheet and strip production and manufacturing technology. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the present invention provides a multi-sensor device coordinated thickness control system for aluminum strip production and rolling. To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-sensor device coordinated thickness control system for aluminum strip production and rolling, comprising:

[0007] The rolling preparation verification module is used to start each sensor device for automatic verification processing through the collaborative controller after receiving the aluminum plate and strip production rolling start signal, obtain the automatic verification data of each sensor device and generate the rolling preparation verification result.

[0008] The data acquisition module is used to output a rolling execution signal when the rolling preparation verification result indicates that rolling can be executed, and start the rolling equipment to carry out the rolling processing of the aluminum plate and strip production, thereby obtaining the real-time rolling data of each sub-rolling area of the aluminum plate and strip based on the monitoring of each sensor device.

[0009] The feedback control module generates a real-time rolling evaluation value of each sub-rolling area of the aluminum strip based on the real-time rolling data analysis and processing of each sub-rolling area of the aluminum strip, and adjusts and controls the real-time rolling thickness of each sub-rolling area of the aluminum strip based on the real-time rolling evaluation value of each sub-rolling area of the aluminum strip.

[0010] The aluminum sheet and strip acceptance module is used to mark the aluminum sheet and strip as a finished aluminum sheet and strip after rolling is completed, and to collect the thickness data and apparent quality data of the finished aluminum sheet and strip, thereby analyzing the acceptance results of the aluminum sheet and strip and feeding them back to the control and display terminal.

[0011] As a preferred technical solution, the automatic verification data of each sensor device is obtained, specifically including:

[0012] After receiving the aluminum plate and strip production rolling start signal, the collaborative controller starts each sensor device for automatic verification processing to obtain automatic verification data of each sensor device. The automatic verification data of each sensor device specifically includes response time, data transmission rate, data transmission bandwidth, working power and resolution.

[0013] As a preferred technical solution, the automatic verification data of each sensor device is obtained and the rolling preparation verification result is generated. The specific process is as follows:

[0014] Based on the automatic verification data of each sensor device, a set of standard values of automatic verification data of each sensor device is extracted from the database, specifically including the standard value of response time, standard value of data transmission rate, standard value of data transmission bandwidth, standard value of working power and standard value of resolution. Based on the automatic verification data and dynamic verification data standard value of each sensor device, the rolling preparation inspection abnormal value of each sensor device is processed and analyzed to generate.

[0015] Based on the rolling preparation inspection abnormal value of each sensor device, it is compared with the rolling preparation inspection abnormal value threshold of each sensor device stored in the database. If the rolling preparation inspection abnormal value of a certain sensor device is greater than or equal to the rolling preparation inspection abnormal value threshold of the sensor device, the rolling preparation inspection result of the sensor device is determined to be unable to execute rolling, and an early warning is issued.

[0016] As a preferred technical solution, when the rolling preparation check result indicates that rolling can be executed, outputting a rolling execution signal specifically includes:

[0017] When the rolling preparation inspection abnormal value of each sensor device is less than the rolling preparation inspection abnormal value threshold of each sensor device, it is determined that the rolling preparation inspection result of each sensor device is executable rolling, and the aluminum strip production rolling is started.

[0018] As a preferred technical solution, the rolling equipment is started to perform aluminum strip production rolling processing, thereby obtaining real-time rolling data of each sub-rolling area of the aluminum strip based on monitoring by each sensor device, and analyzing and processing to generate real-time rolling evaluation values of each sub-rolling area of the aluminum strip, specifically including:

[0019] Based on the monitoring of each sensor device, real-time rolling data of each sub-rolling area of the aluminum strip is obtained, and the real-time rolling data of each sub-rolling area of the aluminum strip includes the average thickness, center point thickness and thickness extreme value difference corresponding to each sub-rolling area of the aluminum strip.

[0020] A set of real-time rolling data standard values for each sub-rolling area of the aluminum strip is extracted from the database, wherein the real-time rolling data standard value set includes the average thickness standard value, center point thickness standard value and thickness standard extreme value difference corresponding to each sub-rolling area of the aluminum strip.

[0021] The preset standard value of aluminum sheet thickness is extracted from the database, and based on the real-time rolling data of each sub-rolling area of the aluminum sheet and the set of real-time rolling data standard values, the real-time rolling evaluation value of each sub-rolling area of the aluminum sheet is analyzed and processed to generate the real-time rolling evaluation value of each sub-rolling area of the aluminum sheet. The real-time rolling evaluation value of each sub-rolling area of the aluminum sheet is used to characterize the real-time rolling conditions of each sub-rolling area of the aluminum sheet.

[0022] As a preferred technical solution, the real-time rolling data analysis and processing of each sub-rolling area of the aluminum strip is used to generate a real-time rolling evaluation value of each sub-rolling area of the aluminum strip, specifically including:

[0023]

[0024] Among them, A i is the real-time rolling evaluation value of the i-th sub-rolling area of the aluminum strip, is the average thickness of the i-th sub-rolling area of the aluminum strip, H i is the thickness of the center point of the i-th sub-rolling area of the aluminum strip, H i,max-min is the thickness extreme value difference of the i-th sub-rolling area of the aluminum strip, is the standard value of the center thickness, H0 is the standard value of the center thickness, H max-min,0 is the thickness standard extreme value difference, i is the sub-rolling zone number of the aluminum strip, i = 1, 2, 3, ..., n, n is the total number of sub-rolling zones of the aluminum strip, and e is a natural constant. As a preferred technical solution, the real-time rolling thickness of the aluminum strip is adjusted and controlled based on the real-time rolling evaluation value of each sub-rolling zone of the aluminum strip, specifically including:

[0025] Based on the real-time rolling evaluation values of each sub-rolling area of the aluminum strip, the abnormal values of the rolling preparation inspection of each sensor equipment are used as influencing factors to correct the real-time rolling evaluation values of each sub-rolling area of the aluminum strip to obtain the corrected real-time rolling evaluation values of the aluminum strip.

[0026] The corrected real-time rolling evaluation value of each sub-rolling area of the aluminum sheet is compared with the qualified interval of the real-time rolling evaluation value in the database. If the corrected real-time rolling evaluation value of a sub-rolling area of the aluminum sheet is within the qualified interval of the real-time rolling evaluation value, the rolling production will continue with the current rolling working parameters of the sub-rolling area. If the corrected real-time rolling evaluation value of a sub-rolling area of the aluminum sheet is greater than the maximum value of the qualified interval of the real-time rolling evaluation value, it is determined that the control parameters of the aluminum sheet production rolling need to be adjusted, and it is recorded as the sub-rolling area that needs to be adjusted downward. The corrected real-time rolling evaluation value of the sub-rolling area to be adjusted is subtracted from the maximum value of the qualified interval of the real-time rolling evaluation value to obtain the rolling downward adjustment value of the sub-rolling area that needs to be adjusted. If the corrected real-time rolling evaluation value of a sub-rolling area of the aluminum strip is less than the minimum value of the qualified interval of the real-time rolling evaluation value, it is determined that the control parameters of the aluminum strip production rolling need to be adjusted, and it is recorded as the sub-rolling area to be adjusted upward. The corrected real-time rolling evaluation value of the sub-rolling area to be adjusted upward is subtracted from the minimum value of the qualified interval of the real-time rolling evaluation value to obtain the rolling upward adjustment value of the sub-rolling area to be adjusted upward.

[0027] The rolling downward adjustment value and the rolling upward adjustment value are collectively recorded as the rolling adjustment value.

[0028] The adjustment values of each rolling control parameter corresponding to the rolling adjustment value interval of the sub-rolling area of the aluminum strip are extracted, and the rolling control parameters include rolling force, rolling speed, roll gap length and temperature. Based on the rolling adjustment value of the sub-rolling area of the aluminum strip, the rolling control parameter adjustment values corresponding to the interval where each rolling adjustment value is located are mapped and matched to obtain the rolling force adjustment value, rolling speed adjustment value, roll gap length adjustment value and temperature adjustment value of the aluminum strip, thereby adjusting and controlling the real-time rolling thickness of the aluminum strip.

[0029] As a preferred technical solution, the thickness data and apparent quality data of the finished aluminum strip specifically include:

[0030] The thickness data of the finished aluminum strip includes the maximum thickness value, the minimum thickness value and the average thickness value of the finished aluminum strip.

[0031] The apparent quality data includes the defect area, plate curvature and glossiness of the finished aluminum strip.

[0032] As a preferred technical solution, the analysis to obtain the acceptance results of the aluminum strip specifically includes:

[0033] The standard thickness data of the aluminum strip is extracted from the database, wherein the standard thickness data of the aluminum strip includes a maximum thickness standard value, a minimum thickness standard value and an average thickness standard value.

[0034] Based on the thickness data of the finished aluminum sheet and strip and the standard thickness data, the thickness quality acceptance value of the finished aluminum sheet and strip is generated through processing and analysis.

[0035] The standard apparent quality data of the aluminum strip is obtained from the database, wherein the standard apparent quality data of the aluminum strip includes a standard value of defect area, a standard value of plate curvature, and a standard value of glossiness.

[0036] Based on the apparent quality data of the finished aluminum sheet and strip and the standard apparent quality data, the apparent quality acceptance value of the finished aluminum sheet and strip is generated through processing and analysis.

[0037] Based on the thickness quality acceptance value and appearance quality acceptance value of the finished aluminum sheet and strip, the comprehensive acceptance value of the aluminum sheet and strip is generated through processing and analysis.

[0038] The comprehensive acceptance value of the aluminum sheet and strip is compared with the preset comprehensive acceptance value threshold to obtain the acceptance result of the aluminum sheet and strip.

[0039] As a preferred technical solution, the feedback to the control display terminal specifically includes:

[0040] If the comprehensive acceptance value of the finished aluminum sheet is less than the comprehensive acceptance value threshold, the finished aluminum sheet is judged to be unqualified and the feedback is sent to the control display terminal.

[0041] If the comprehensive acceptance value of the finished aluminum sheet is greater than or equal to the comprehensive acceptance value threshold, the finished aluminum sheet is judged to be qualified.

[0042] Compared with the prior art, the embodiments of the present invention have at least the following beneficial effects:

[0043] (1) The present invention provides a multi-sensor equipment collaborative thickness control system for aluminum plate and strip production and rolling. By integrating a rolling verification module, a data acquisition module, a feedback control module, a feedforward control module and an aluminum plate and strip acceptance module, a closed-loop automated rolling control system is formed. Through real-time monitoring and feedback control, the thickness of the aluminum plate and strip is accurately controlled to reduce errors.

[0044] (2) By screening out sensor devices that are not working properly in advance, it is possible to ensure that the sensor devices can accurately detect and respond at critical moments, thereby avoiding safety accidents caused by sensor device failures. Similarly, it also ensures the accuracy of sensor device data and the reliability of transmitted data.

[0045] (3) Using the abnormal rolling pre-test values of each sensor device as an influencing factor to correct the real-time rolling assessment values of each sub-rolling area of the aluminum plate and strip can improve measurement accuracy. The abnormal rolling pre-test values of the sensor device can reflect the current status of the device, including its accuracy and reliability. Using the abnormal rolling pre-test values of each sensor device as an influencing factor, the sensor measurement data is corrected to improve the accuracy of the real-time rolling assessment value.

[0046] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 Schematic diagram of the system module of the present invention. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] See also Figure 1 As shown, an embodiment of the present invention provides a multi-sensor device coordinated thickness control system for aluminum strip production and rolling, comprising:

[0051] The rolling preparation verification module is used to start each sensor device for automatic verification processing through the collaborative controller after receiving the aluminum plate and strip production rolling start signal, obtain the automatic verification data of each sensor device and generate the rolling preparation verification result.

[0052] The automatic verification data of each sensor device is obtained, specifically including:

[0053] In this embodiment, the sensing devices include a pressure sensing device, a temperature sensing device, and a thickness detection device.

[0054] After receiving the aluminum plate and strip production rolling start signal, each sensor device is started by the collaborative controller to perform automatic verification processing to obtain automatic verification data of each sensor device. The automatic verification data of each sensor device specifically includes response time, data transmission rate, data transmission bandwidth, working power and resolution, which are obtained through an oscilloscope and a network analyzer.

[0055] Response time is a measure of the time it takes for a sensor device to respond after receiving a signal. It directly impacts the real-time performance and efficiency of a control system. A short response time ensures that the control system can promptly detect changes in the production process and make quick adjustments.

[0056] The data transmission rate refers to the amount of data transmitted by the sensor device per unit time. A high data transmission rate can ensure the rapid transmission of large amounts of data.

[0057] Data transmission bandwidth refers to the maximum data transmission rate that a data transmission channel can withstand, which determines the capacity of the data transmission channel. Sufficient bandwidth can ensure that data from multiple sensor devices can be transmitted simultaneously without congestion.

[0058] Operating power refers to the power consumed by a sensing device during normal operation. Monitoring operating power helps understand the energy consumption of the device. Abnormal power consumption may indicate a device failure.

[0059] Resolution refers to the smallest unit of measurement a sensor can distinguish, specifically the minimum change in the sensor's output signal that corresponds to a change in the input quantity. High resolution means the sensor can detect even subtler parameter changes. In aluminum sheet and strip production, high-resolution sensors can more accurately monitor parameters like thickness and defects, thereby improving product quality.

[0060] The specific process of obtaining the automatic verification data of each sensor device and generating the rolling preparation verification result is as follows:

[0061] Based on the automatic verification data of each sensor device, a set of standard values of automatic verification data of each sensor device is extracted from the database, specifically including the standard value of response time, standard value of data transmission rate, standard value of data transmission bandwidth, standard value of working power and standard value of resolution. Based on the automatic verification data and dynamic verification data standard value of each sensor device, the rolling preparation inspection abnormal value of each sensor device is processed and analyzed to generate.

[0062] The processing and analysis generates abnormal values of the rolling preparation inspection of each sensor device, and the specific processing conditions are:

[0063]

[0064] Among them, B i is the abnormal value of the rolling preparation test of the i-th sensing device, t i is the response time of the i-th sensor device, v i is the data transmission rate of the i-th sensor device, d i is the data transmission bandwidth of the i-th sensor device, w i is the working power of the i-th sensor device, b i is the resolution of the i-th sensor device, t 0,i is the standard value of the response time of the i-th sensor device, v 0,i is the standard value of the data transmission rate of the i-th sensor device, d 0,i is the standard value of the data transmission bandwidth of the i-th sensor device, w 0,iis the working power calibration value of the i-th sensor device, b 0,i is the resolution standard value of the i-th sensor device, i is the sensor device number, i = 1, 2, 3, ..., n, and n is the total number of sensor devices.

[0065] It's important to note that there's a correlation between response time, data rate, data bandwidth, operating power, and resolution. A faster data rate reduces data transmission time, thereby lowering overall response time. If the data rate is slow, even if the sensor itself responds quickly, response time will increase due to data transmission delays. The data rate is limited by the data bandwidth. A larger bandwidth supports a higher data rate. If the bandwidth is insufficient to support high-speed data transmission, the transmission rate will be limited. Increasing the data rate requires increased operating power, and higher transmission rates require stronger signal drivers. High-resolution sensors may require more complex signal processing, which increases processing time and thus affects response time.

[0066] When the rolling preparation check result indicates that rolling can be performed, outputting a rolling execution signal specifically includes:

[0067] Based on the rolling preparation inspection abnormality value of each sensor device, it is compared with the rolling preparation inspection abnormality value threshold of each sensor device pre-stored in the database. If the rolling preparation inspection abnormality value of a certain sensor device is greater than or equal to the rolling preparation inspection abnormality value threshold of the sensor device, the sensor device is judged as abnormal and an early warning is issued.

[0068] When the rolling preparation inspection abnormal value of each sensor device is less than the rolling preparation inspection abnormal value threshold of each sensor device, the aluminum strip production rolling starts.

[0069] The rolling preparation inspection abnormal value threshold is processed as follows: in a specific embodiment, the rolling preparation inspection abnormal value threshold is directly set in the database during the development of the multi-sensor device collaborative thickness control system involved in the embodiment of the present invention. There are many methods for setting the rolling preparation inspection abnormal value threshold, such as obtaining it through statistical analysis, including counting the rolling preparation inspection abnormal values under the historical normal state of each sensor device (for example, the response time is less than 10ms), and averaging the rolling preparation inspection abnormal values obtained multiple times to obtain the rolling preparation inspection abnormal value threshold, or experts judge the boundary between high rolling preparation inspection abnormal values and low rolling preparation inspection abnormal values through corresponding historical data to set the threshold, thereby adjusting the threshold.

[0070] By proactively screening for malfunctioning sensor devices, we can ensure they can accurately detect and respond at critical moments. Early detection of potential sensor device issues can prevent downtime during production, thereby avoiding safety incidents caused by sensor device failures. Similarly, we can ensure the accuracy and reliability of sensor device data.

[0071] The data acquisition module is used to output a rolling execution signal when the rolling preparation verification result indicates that rolling can be executed, and start the rolling equipment to carry out the rolling processing of the aluminum plate and strip production, thereby obtaining the real-time rolling data of each sub-rolling area of the aluminum plate and strip based on the monitoring of each sensor device.

[0072] The rolling equipment is started to perform aluminum strip production rolling processing, thereby obtaining real-time rolling data of each sub-rolling area of the aluminum strip based on monitoring by each sensor device, and analyzing and processing to generate real-time rolling evaluation values of each sub-rolling area of the aluminum strip, specifically including:

[0073] Based on the monitoring of each sensor device, real-time rolling data of each sub-rolling area of the aluminum strip is obtained, and the real-time rolling data of each sub-rolling area of the aluminum strip includes the average thickness, center point thickness and thickness extreme value difference corresponding to each sub-rolling area of the aluminum strip.

[0074] Average thickness reflects the overall thickness level of each sub-rolling zone of the aluminum strip. By monitoring the average thickness, it is possible to assess whether the rolling process is meeting the predetermined thickness requirements. If the average thickness deviates from the target value, it indicates that the rolling process may need adjustment.

[0075] Center thickness refers to the thickness of the aluminum strip at the center of its width. Center thickness is a key indicator of the strip's symmetry and uniformity. A significant difference between center thickness and edge thickness may indicate roll eccentricity or uneven rolling force distribution, requiring prompt adjustment.

[0076] Thickness extreme difference refers to the difference between the maximum and minimum thickness values of the aluminum strip within the same sub-rolling zone. It reflects the degree of thickness fluctuation within that zone. A smaller extreme difference indicates better thickness control and higher product quality. A larger extreme difference indicates significant thickness non-uniformity during the rolling process.

[0077] A set of real-time rolling data standard values for each sub-rolling area of the aluminum strip is extracted from the database, wherein the real-time rolling data standard value set includes the average thickness standard value, center point thickness standard value and thickness standard extreme value difference corresponding to each sub-rolling area of the aluminum strip.

[0078] The preset standard value of aluminum sheet thickness is extracted from the database, and based on the real-time rolling data of each sub-rolling area of the aluminum sheet and the set of real-time rolling data standard values, the real-time rolling evaluation value of each sub-rolling area of the aluminum sheet is analyzed and processed to generate the real-time rolling evaluation value of each sub-rolling area of the aluminum sheet. The real-time rolling evaluation value of each sub-rolling area of the aluminum sheet is used to characterize the real-time rolling conditions of each sub-rolling area of the aluminum sheet.

[0079] The feedback control module generates a real-time rolling evaluation value of each sub-rolling area of the aluminum strip based on the real-time rolling data analysis and processing of each sub-rolling area of the aluminum strip, and adjusts and controls the real-time rolling thickness of the aluminum strip based on the real-time rolling evaluation value of each sub-rolling area of the aluminum strip.

[0080] The generating of the real-time rolling evaluation value of each sub-rolling area of the aluminum strip based on the real-time rolling data analysis and processing of each sub-rolling area of the aluminum strip specifically includes:

[0081]

[0082] Among them, A i is the real-time rolling evaluation value of the i-th sub-rolling area of the aluminum strip, is the average thickness of the i-th sub-rolling area of the aluminum strip, H i is the thickness of the center point of the i-th sub-rolling area of the aluminum strip, H i,max-min is the thickness extreme value difference of the i-th sub-rolling area of the aluminum strip, is the standard value of the center thickness, H0 is the standard value of the center thickness, H max-min,0 is the thickness standard extreme value difference, i is the sub-rolling zone number of the aluminum strip, i=1,2,3,...,n, n is the total number of sub-rolling zones of the aluminum strip, and e is a natural constant. The real-time rolling thickness of the aluminum strip is adjusted and controlled based on the real-time rolling evaluation value of each sub-rolling zone of the aluminum strip, specifically including:

[0083] Based on the real-time rolling evaluation values of each sub-rolling area of the aluminum sheet and strip, the abnormal values of the rolling preparation inspection of each sensing equipment are used as influencing factors to correct the real-time rolling evaluation values of each sub-rolling area of the aluminum sheet and strip, and obtain the corrected real-time rolling evaluation values of each sub-rolling area of the aluminum sheet and strip.

[0084] The modified real-time rolling assessment value of the aluminum strip is specifically processed as follows:

[0085]

[0086] Among them, A l τ is the corrected real-time rolling evaluation value of the lth sub-rolling zone of the aluminum strip, B i is the abnormal value of the rolling preparation test of the i-th sensing device, A lis the real-time rolling evaluation value of the lth sub-rolling area of the aluminum strip, i is the number of the sensing device, i = 1, 2, 3, ..., n, n is the total number of sensing devices, l is the sub-rolling area number of the aluminum strip, l = 1, 2, 3, ..., m, m is the total number of sub-rolling areas of the aluminum strip, and e is a natural constant.

[0087] The corrected real-time rolling evaluation value of each sub-rolling area of the aluminum sheet is compared with the qualified interval of the real-time rolling evaluation value in the database. If the corrected real-time rolling evaluation value of a sub-rolling area of the aluminum sheet is within the qualified interval of the real-time rolling evaluation value, the rolling production will continue with the current rolling working parameters of the sub-rolling area. If the corrected real-time rolling evaluation value of a sub-rolling area of the aluminum sheet is greater than the maximum value of the qualified interval of the real-time rolling evaluation value, it is determined that the control parameters of the aluminum sheet production rolling need to be adjusted, and it is recorded as the sub-rolling area that needs to be adjusted downward. The corrected real-time rolling evaluation value of the sub-rolling area to be adjusted is subtracted from the maximum value of the qualified interval of the real-time rolling evaluation value to obtain the rolling downward adjustment value of the sub-rolling area that needs to be adjusted. If the corrected real-time rolling evaluation value of a sub-rolling area of the aluminum strip is less than the minimum value of the qualified interval of the real-time rolling evaluation value, it is determined that the control parameters of the aluminum strip production rolling need to be adjusted, and it is recorded as the sub-rolling area to be adjusted upward. The corrected real-time rolling evaluation value of the sub-rolling area to be adjusted upward is subtracted from the minimum value of the qualified interval of the real-time rolling evaluation value to obtain the rolling upward adjustment value of the sub-rolling area to be adjusted upward.

[0088] The rolling downward adjustment value and the rolling upward adjustment value are collectively recorded as the rolling adjustment value.

[0089] The rolling control parameter adjustment values pre-stored in the database corresponding to the rolling adjustment value interval of the sub-rolling area of the aluminum strip are extracted, and the rolling control parameters include rolling force, rolling speed, roll gap length and temperature. Based on the rolling adjustment value of the sub-rolling area of the aluminum strip, the rolling control parameter adjustment values corresponding to the interval where the rolling adjustment value is located are mapped and matched respectively to obtain the rolling force adjustment value, rolling speed adjustment value, roll gap length adjustment value and temperature adjustment value of the aluminum strip, thereby adjusting and controlling the real-time rolling thickness of the aluminum strip.

[0090] Rolling force refers to the force acting on the rollers, which is used to overcome the deformation resistance of the metal and achieve plastic deformation of the metal. By adjusting the rolling force, the thickness of the aluminum strip can be precisely controlled.

[0091] Rolling speed refers to the speed at which the aluminum strip passes through the rollers in the rolling mill. An appropriate rolling speed helps to achieve better surface quality and avoid surface defects caused by excessive speed.

[0092] The gap length, defined as the gap between the rollers, determines the degree of deformation of the aluminum strip during the rolling process. Adjusting the gap length directly affects the final thickness of the aluminum strip. A suitable gap length ensures uniform deformation of the aluminum strip during rolling, avoiding uneven thickness or insufficient deformation.

[0093] Temperature refers to the temperature of the aluminum strip during the rolling process, which affects the plastic deformation ability of the metal. The appropriate temperature can increase the plasticity of aluminum, making it easier to deform.

[0094] It should be noted that when the rolling force adjustment value, rolling speed adjustment value, roll gap length adjustment value and temperature adjustment value are positive, the corresponding control parameters will be adjusted upward, and when the adjustment value is negative, the corresponding control parameters will be adjusted downward.

[0095] The aluminum sheet and strip acceptance module is used to mark the aluminum sheet and strip as a finished aluminum sheet and strip after rolling is completed, and to collect the thickness data and apparent quality data of the finished aluminum sheet and strip, thereby analyzing the acceptance results of the aluminum sheet and strip and feeding them back to the control and display terminal.

[0096] The thickness data of the finished aluminum strip specifically includes:

[0097] The maximum thickness, minimum thickness and average thickness of the finished aluminum sheet and strip.

[0098] The maximum thickness value reflects the thickest point of the finished aluminum sheet and strip, and is an important indicator to measure whether the product meets the thickness tolerance range, ensuring that the finished aluminum sheet and strip does not exceed the specified maximum thickness limit.

[0099] The minimum thickness value indicates the thinnest point of the finished aluminum sheet and strip, and is also a key indicator to measure whether the product meets the thickness tolerance range.

[0100] The average thickness value is the statistical average of the thickness of the entire aluminum strip, which reflects the overall thickness level of the aluminum strip. The average thickness value can be used to evaluate the overall uniformity of the aluminum strip and ensure product consistency.

[0101] The apparent quality data specifically include:

[0102] The defect area, plate curvature and glossiness of the finished aluminum strip.

[0103] The defect area refers to the total area of surface defects on the aluminum sheet, such as scratches, indentations, bubbles, stains, etc. The presence of defects may affect subsequent processing, such as painting and printing, so they need to be controlled within an acceptable range.

[0104] Curvature refers to the degree of curvature of the aluminum strip in both length and width, typically expressed in millimeters. This ensures that the aluminum strip remains straight during subsequent processing and use, preventing bending that could cause processing difficulties or product scrap.

[0105] Glossiness refers to the light-reflecting ability of the aluminum sheet surface. Aluminum sheet with high glossiness has a better visual effect and is suitable for products that require high appearance quality. Certain applications, such as reflective materials and decorative materials, require a specific glossiness to meet functional requirements.

[0106] The acceptance results of the aluminum strip obtained by the analysis are fed back to the control display terminal, specifically including:

[0107] The standard thickness data of the aluminum strip is extracted from the database, wherein the standard thickness data of the aluminum strip includes a maximum thickness standard value, a minimum thickness standard value and an average thickness standard value.

[0108] Based on the thickness data of the finished aluminum strip and the standard thickness data, the thickness quality acceptance value of the finished aluminum strip is generated through processing and analysis. The specific processing process is as follows:

[0109]

[0110] Among them, F is the thickness quality acceptance value of the finished aluminum strip, H max is the maximum thickness of the finished aluminum strip, H min is the minimum thickness of the finished aluminum strip, is the average thickness of the finished aluminum strip, H max,0 H is the maximum thickness standard value of the finished aluminum strip. min,0 is the minimum thickness standard value of finished aluminum strip, It is the standard value of the average thickness of the finished aluminum sheet.

[0111] It's important to note that the maximum, minimum, and average thickness values of finished aluminum strips are correlated. The difference between the maximum and minimum thickness values is called the thickness tolerance. A smaller thickness tolerance indicates more precise thickness control of the aluminum strip, resulting in higher product uniformity and quality. The average thickness value should generally fall between the maximum and minimum thickness values. If the average thickness value is close to the maximum thickness value, it may indicate that the overall thickness is too thick. If it is close to the minimum thickness value, it may indicate that the overall thickness is too thin. Ideally, the maximum and minimum thickness values should be as close as possible to the average thickness value, indicating a uniform thickness distribution.

[0112] The standard apparent quality data of the aluminum strip is obtained from the database, wherein the standard apparent quality data of the aluminum strip includes a standard value of defect area, a standard value of plate curvature, and a standard value of glossiness.

[0113] Based on the apparent quality data of the finished aluminum strip and the standard apparent quality data, the apparent quality acceptance value of the finished aluminum strip is generated through processing and analysis. The specific processing conditions are:

[0114]

[0115] Among them, G is the apparent quality acceptance value of the finished aluminum sheet, S is the defect area of the finished aluminum sheet, J is the plate curvature of the finished aluminum sheet, L is the glossiness of the finished aluminum sheet, S0 is the standard value of the defect area of the finished aluminum sheet, J0 is the standard value of the plate curvature of the finished aluminum sheet, L0 is the standard value of the glossiness of the finished aluminum sheet, and e is a natural constant.

[0116] Based on the thickness quality acceptance value and the apparent quality acceptance value of the finished aluminum strip, the comprehensive acceptance value of the finished aluminum strip is generated through processing and analysis. The specific processing conditions are:

[0117]

[0118] Among them, Y is the comprehensive acceptance value of the finished aluminum sheet, F is the thickness quality acceptance value of the finished aluminum sheet, G is the apparent quality acceptance value of the finished aluminum sheet, ω1 is the thickness quality acceptance value weight factor, and ω2 is the apparent quality acceptance value weight factor.

[0119] It should be noted that the thickness quality acceptance value weight factor and the apparent quality acceptance value weight factor both have a value range between 0 and 1, and satisfy ω1+ω2=1. The thickness quality acceptance value weight factor is an influencing factor corresponding to the comprehensive acceptance value of the finished aluminum sheet preset in the database, indicating the numerical value of the degree of influence of the thickness quality acceptance value on the comprehensive acceptance value of the finished aluminum sheet. The apparent quality acceptance value weight factor is an influencing factor corresponding to the comprehensive acceptance value of the finished aluminum sheet preset in the database, indicating the numerical value of the degree of influence of the apparent quality acceptance value on the comprehensive acceptance value of the finished aluminum sheet. When used, the thickness quality acceptance value weight factor and the apparent quality acceptance value weight factor can be directly obtained from the database, and the corresponding relationship is a pre-set mapping relationship. For example, the thickness quality acceptance value and the apparent quality acceptance value of the finished aluminum sheet respectively form a mapping set with the corresponding thickness quality acceptance value weight factor and the apparent quality acceptance value weight factor, and the thickness quality acceptance value and the apparent quality acceptance value of the finished aluminum sheet are input into the mapping set to obtain the thickness quality acceptance value weight factor and the apparent quality acceptance value weight factor of the finished aluminum sheet, wherein the mapping relationship is one-to-one correspondence.

[0120] The comprehensive acceptance value of the aluminum sheet and strip is compared with the preset comprehensive acceptance value threshold to obtain the acceptance result of the aluminum sheet and strip.

[0121] If the comprehensive acceptance value of the finished aluminum sheet is less than the comprehensive acceptance value threshold, the finished aluminum sheet is judged to be unqualified and the result is fed back to the control display terminal.

[0122] If the comprehensive acceptance value of the finished aluminum sheet is greater than or equal to the comprehensive acceptance value threshold, the finished aluminum sheet is judged to be qualified.

[0123] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0124] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made based on the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention. As long as they do not deviate from the structure of the present invention or exceed the scope defined by the present invention, they should fall within the scope of protection of the present invention.

Claims

1. A multi-sensor coordinated thickness control system for aluminum strip production and rolling, characterized by: include: The rolling preparation verification module is used to start each sensor device through the collaborative controller to perform automatic verification processing after receiving the aluminum plate and strip production rolling start signal, obtain the automatic verification data of each sensor device and generate the rolling preparation verification result; The data acquisition module is used to output a rolling execution signal when the rolling preparation verification result indicates that rolling can be executed, and start the rolling equipment to carry out the aluminum plate and strip production rolling process, thereby obtaining real-time rolling data of each sub-rolling area of the aluminum plate and strip based on the monitoring of each sensor device; A feedback control module generates a real-time rolling evaluation value of each sub-rolling area of the aluminum strip based on real-time rolling data analysis and processing, and adjusts and controls the real-time rolling thickness of the aluminum strip based on the real-time rolling evaluation value of each sub-rolling area of the aluminum strip; The aluminum strip acceptance module is used to mark the aluminum strip as a finished aluminum strip after rolling, and collect the thickness data and apparent quality data of the finished aluminum strip, thereby analyzing the acceptance results of the aluminum strip and feeding them back to the control display terminal; The automatic verification data of each sensor device is obtained, specifically including: After receiving the aluminum strip production rolling start signal, the collaborative controller starts each sensor device to perform automatic calibration processing, and obtains automatic calibration data of each sensor device, wherein the automatic calibration data of each sensor device specifically includes response time, data transmission rate, data transmission bandwidth, working power and resolution; The specific process of obtaining the automatic verification data of each sensor device and generating the rolling preparation verification result is as follows: Based on the automatic verification data of each sensor device, a set of standard values of the automatic verification data of each sensor device is extracted from the database, specifically including the standard value of response time, standard value of data transmission rate, standard value of data transmission bandwidth, standard value of working power and standard value of resolution. Based on the automatic verification data and the standard value of dynamic verification data of each sensor device, the rolling preparation inspection abnormal value of each sensor device is processed and analyzed; Based on the rolling preparation inspection abnormal value of each sensor device, it is compared with the rolling preparation inspection abnormal value threshold of each sensor device stored in the database. If the rolling preparation inspection abnormal value of a certain sensor device is greater than or equal to the rolling preparation inspection abnormal value threshold of the sensor device, the rolling preparation inspection result of the sensor device is determined to be unable to execute rolling, and an early warning is issued.

2. The multi-sensor coordinated thickness control system for aluminum strip production and rolling according to claim 1 is characterized in that: When the rolling preparation check result indicates that rolling can be performed, outputting a rolling execution signal specifically includes: When the rolling preparation inspection abnormal value of each sensor device is less than the rolling preparation inspection abnormal value threshold of each sensor device, it is determined that the rolling preparation inspection result of each sensor device is executable rolling, and the aluminum strip production rolling is started.

3. The multi-sensor coordinated thickness control system for aluminum strip production and rolling according to claim 2 is characterized in that: The starting of the rolling equipment to perform aluminum strip production rolling processing, thereby obtaining real-time rolling data of each sub-rolling area of the aluminum strip based on monitoring by each sensor device, specifically includes: Acquiring real-time rolling data of each sub-rolling area of the aluminum strip based on monitoring by each sensing device, wherein the real-time rolling data of each sub-rolling area of the aluminum strip includes an average thickness, a center point thickness, and a thickness extreme value difference corresponding to each sub-rolling area of the aluminum strip; Extracting a set of real-time rolling data standard values for each sub-rolling area of the aluminum strip from a database, wherein the set of real-time rolling data standard values includes an average thickness standard value, a center point thickness standard value, and a thickness standard extreme value difference corresponding to each sub-rolling area of the aluminum strip; The preset standard value of aluminum sheet thickness is extracted from the database, and based on the real-time rolling data of each sub-rolling area of the aluminum sheet and the set of real-time rolling data standard values, the real-time rolling evaluation value of each sub-rolling area of the aluminum sheet is analyzed and processed to generate the real-time rolling evaluation value of each sub-rolling area of the aluminum sheet. The real-time rolling evaluation value of each sub-rolling area of the aluminum sheet is used to characterize the real-time rolling conditions of each sub-rolling area of the aluminum sheet.

4. The multi-sensor coordinated thickness control system for aluminum strip production and rolling according to claim 2 is characterized in that: The generating of the real-time rolling evaluation value of each sub-rolling area of the aluminum strip based on the real-time rolling data analysis and processing of each sub-rolling area of the aluminum strip specifically includes: Among them, A i is the real-time rolling evaluation value of the i-th sub-rolling area of the aluminum strip, is the average thickness of the i-th sub-rolling area of the aluminum strip, H i is the thickness of the center point of the i-th sub-rolling area of the aluminum strip, H i,max-min is the thickness extreme value difference of the i-th sub-rolling area of the aluminum strip, is the standard value of the center thickness, H0 is the standard value of the center thickness, H max-min,0 is the thickness standard extreme value difference, i is the sub-rolling area number of the aluminum plate and strip, i=1,2,3,...,n, n is the total number of sub-rolling areas of the aluminum plate and strip, and e is a natural constant.

5. The multi-sensor coordinated thickness control system for aluminum strip production and rolling according to claim 1 is characterized in that: The adjusting and controlling of the real-time rolling thickness of each sub-rolling area of the aluminum strip based on the real-time rolling evaluation value of each sub-rolling area of the aluminum strip specifically includes: Based on the real-time rolling evaluation value of each sub-rolling area of the aluminum strip, the abnormal value of the rolling pre-inspection of each sensor device is used as an influencing factor to correct the real-time rolling evaluation value of each sub-rolling area of the aluminum strip to obtain the corrected real-time rolling evaluation value of the aluminum strip; The corrected real-time rolling evaluation value of each sub-rolling area of the aluminum sheet is compared with the qualified interval of the real-time rolling evaluation value in the database. If the corrected real-time rolling evaluation value of a sub-rolling area of the aluminum sheet is within the qualified interval of the real-time rolling evaluation value, the rolling production will continue with the current rolling working parameters of the sub-rolling area. If the corrected real-time rolling evaluation value of a sub-rolling area of the aluminum sheet is greater than the maximum value of the qualified interval of the real-time rolling evaluation value, it is determined that the control parameters of the aluminum sheet production rolling need to be adjusted, and it is recorded as the sub-rolling area that needs to be adjusted downward. The corrected real-time rolling evaluation value of the sub-rolling area to be adjusted is subtracted from the maximum value of the qualified interval of the real-time rolling evaluation value to obtain the rolling downward adjustment value of the sub-rolling area to be adjusted downward; if the corrected real-time rolling evaluation value of a sub-rolling area of the aluminum strip is less than the minimum value of the qualified interval of the real-time rolling evaluation value, it is determined that the control parameters of the aluminum strip production rolling need to be adjusted, and it is recorded as the sub-rolling area to be adjusted upward; the corrected real-time rolling evaluation value of the sub-rolling area to be adjusted upward is subtracted from the minimum value of the qualified interval of the real-time rolling evaluation value to obtain the rolling upward adjustment value of the sub-rolling area to be adjusted upward; The rolling adjustment value and the rolling adjustment value are collectively recorded as the rolling adjustment value; The adjustment values of each rolling control parameter corresponding to the rolling adjustment value interval of the sub-rolling area of the aluminum strip are extracted, and the rolling control parameters include rolling force, rolling speed, roll gap length and temperature. Based on the rolling adjustment value of the sub-rolling area of the aluminum strip, the rolling control parameter adjustment values corresponding to the interval where each rolling adjustment value is located are mapped and matched to obtain the rolling force adjustment value, rolling speed adjustment value, roll gap length adjustment value and temperature adjustment value of the aluminum strip, thereby adjusting and controlling the real-time rolling thickness of the aluminum strip.

6. The multi-sensor coordinated thickness control system for aluminum strip production and rolling according to claim 5, characterized in that: The thickness data and apparent quality data of the finished aluminum strip specifically include: The thickness data of the finished aluminum strip includes the maximum thickness value, the minimum thickness value and the average thickness value of the finished aluminum strip; The apparent quality data includes the defect area, plate curvature and glossiness of the finished aluminum strip.

7. The multi-sensor coordinated thickness control system for aluminum strip production and rolling according to claim 6, characterized in that: The analysis obtains the acceptance results of the aluminum strip, specifically including: Extracting standard thickness data of aluminum strips from a database, wherein the standard thickness data of the aluminum strips include a maximum thickness standard value, a minimum thickness standard value, and an average thickness standard value; Based on the thickness data of finished aluminum strips and the standard thickness data, the thickness quality acceptance value of the finished aluminum strips is generated through processing and analysis; Obtaining standard apparent quality data of the aluminum strip from a database, wherein the standard apparent quality data of the aluminum strip includes a standard value of defect area, a standard value of plate curvature, and a standard value of glossiness; Based on the apparent quality data of the finished aluminum sheet and strip and the standard apparent quality data, the apparent quality acceptance value of the finished aluminum sheet and strip is generated through processing and analysis; Based on the thickness quality acceptance value and appearance quality acceptance value of the finished aluminum strip, the comprehensive acceptance value of the aluminum strip is generated through processing and analysis; The comprehensive acceptance value of the aluminum sheet and strip is compared with the preset comprehensive acceptance value threshold to obtain the acceptance result of the aluminum sheet and strip.

8. The multi-sensor coordinated thickness control system for aluminum strip production and rolling according to claim 7, characterized in that: The feedback to the control display terminal specifically includes: If the comprehensive acceptance value of the finished aluminum strip is less than the comprehensive acceptance value threshold, the finished aluminum strip is judged to be unqualified and the feedback is fed back to the control display terminal; If the comprehensive acceptance value of the finished aluminum sheet is greater than or equal to the comprehensive acceptance value threshold, the finished aluminum sheet is judged to be qualified.

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