Control method and device for stretch bending and straightening of red copper belt, electronic equipment and storage medium

Abstract

The invention provides a control method and device for stretch bending and straightening of a red copper belt, electronic equipment and a storage medium, and is applied to the technical field of metal material machining, according to the method, a non-contact electromagnetic induction device is adopted for stretch bending and straightening of the red copper belt, and damage to the surface of the red copper belt is reduced; the batch information and the preset target hardness value of the red copper belt are obtained, so that proper initial electromagnetic straightening parameters can be selected for the red copper belts with different specifications and surface treatment; matched electromagnetic straightening parameters are called from a preset parameter library, the initial straightening condition can be rapidly set, and the production efficiency is improved; and detecting the hardness value of the belt in real time, comparing the detected hardness value of the belt with a preset target hardness value, and when the deviation between the detected hardness value of the belt and the preset target hardness value exceeds an allowable range, constructing a red copper belt hardness control mathematical model. Electromagnetic straightening parameters are adjusted according to the copper belt hardness control mathematical model, and accurate hardness control in the copper belt stretch bending and straightening process is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of metal material processing, and in particular to a control method, device, electronic equipment and storage medium for bending and straightening of copper strips. Background Art

[0002] In the field of copper strip bending and straightening, hardness control is one of the key technologies to ensure product quality. The hardness of copper strip will change during the bending and straightening process, which directly affects the performance of subsequent processing and application. Therefore, it is of great significance to achieve precise control of the hardness of copper strip.

[0003] However, with the acceleration of production pace and the increase in product diversification, customers' demands for the quality of copper strips are becoming higher and more diverse. This requires manufacturers to accurately control the bending and straightening process of each batch of copper strips when producing copper strips to ensure that the hardness meets customer needs.

[0004] In the existing technology, traditional hardness control methods often use fixed straightening parameters and lack the ability to make dynamic adjustments based on real-time feedback, which is particularly insufficient when facing different batches or specifications of copper strips; and traditional straightening parameter adjustment often relies on the operator's experience, which not only increases the difficulty of operation, but also limits production efficiency and product quality stability.

[0005] In addition, existing straightening equipment usually uses contact straightening. For some customers who require the surface of the copper strip to remain flat, especially those who produce high-precision electronic connectors, traditional contact straightening will inevitably damage the surface of the copper strip.

[0006] Therefore, the prior art lacks a method for accurately controlling the hardness of the copper strip and ensuring that the surface of the copper strip is not damaged as much as possible. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the control method, device, electronic equipment and storage medium for copper strip bending and straightening provided in the present application are applied to the field of metal material processing technology, and have the advantages of being able to accurately control the hardness of the copper strip and improve the stability of product quality.

[0008] In a first aspect, a control method for bending and straightening a copper strip is applied to a copper strip bending and straightening device, wherein the bending and straightening device is provided with a non-contact electromagnetic induction device composed of a plurality of electromagnetic coils along the direction of movement of the copper strip, and a hardness detection sensor is provided at a strip inlet and a strip outlet of the non-contact electromagnetic induction device, respectively; the method comprises the steps of: S1: Obtaining batch information and a preset target hardness value of the copper strip to be straightened, wherein the batch information at least includes the specification and surface coating type of the copper strip; S2: According to the batch information, calling electromagnetic straightening parameters matching the specifications and surface coating type of the copper strip from a preset parameter library; S3: straightening the copper strip by using the electromagnetic straightening parameters, and detecting the strip hardness value of the copper strip at the strip outlet in real time; S4: Calculating the deviation between the strip hardness value and the preset target hardness value, and when the deviation exceeds the preset allowable deviation, calculating the electromagnetic straightening parameter adjustment amount according to the deviation; S5: adjusting the electromagnetic straightening parameters according to the calculated electromagnetic straightening parameter adjustment amount, and straightening the copper strip using the adjusted electromagnetic straightening parameters, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0009] The present application proposes a control method for the bending and straightening of a copper strip. The method adopts a non-contact electromagnetic induction device to perform the bending and straightening of the copper strip, which can reduce the damage to the surface of the copper strip; obtains the batch information and preset target hardness value of the copper strip, which helps to select the appropriate initial electromagnetic straightening parameters for the copper strips with different specifications and surface treatments; calls the matching electromagnetic straightening parameters from the preset parameter library, and can quickly set the initial straightening conditions to improve production efficiency; detects the strip hardness value in real time, and compares the strip hardness value with the preset target hardness value. When the deviation between the strip hardness value and the preset target hardness value exceeds the allowable range, a hardness control mathematical model is constructed. This real-time monitoring and dynamic adjustment method can respond to hardness changes in a timely manner; adjusts the electromagnetic straightening parameters according to the constructed mathematical model, and continues straightening until the target hardness is reached. This closed-loop control method can accurately control the final hardness of the copper strip. The method realizes accurate hardness control in the bending and straightening process of the copper strip through real-time monitoring, dynamic adjustment and closed-loop control. It overcomes the limitations of the traditional fixed parameter straightening method and improves the accuracy and stability of hardness control. At the same time, the non-contact straightening method also protects the surface of the copper strip, meeting the application requirements of high-precision electronic connectors and other applications with high surface quality requirements.

[0010] Furthermore, the electromagnetic straightening parameters include at least current intensity and current frequency; Step S4 includes: S41: Calculating the deviation between the outlet hardness value and the preset target hardness value ,in, is the preset target hardness value, is the strip hardness value at time t, for the deviation; S42: Calculating the electromagnetic straightening parameter adjustment amount according to the deviation at least includes: Calculate the current intensity adjustment: ,in, is the current intensity adjustment at time t, For adjustment The proportional gain, To adjust The integral gain, is the integral term, which indicates the deviation over time The cumulative represents the deviation value at any time τ, where time τ is an integral variable, To adjust The differential gain, is the differential term, which represents the rate of change of the deviation with time t, where t is the current moment; Calculate the current frequency adjustment: ,in, is the current frequency adjustment at time t, For adjustment The proportional gain, For adjustment The integral gain, For adjustment The differential gain.

[0011] The present application proposes a control method for straightening copper strips, which provides a clear deviation calculation formula by accurately calculating the deviation between the strip hardness value and the target hardness value, ensuring the accuracy and consistency of the calculation; and then uses the PID control algorithm to calculate the electromagnetic straightening parameter adjustment amount, which can finely adjust the current intensity and current frequency according to the size, cumulative effect and change trend of the deviation, so as to better control the hardness of the copper strip and improve the consistency and stability of product quality. At the same time, this automated control method reduces the dependence on the operator's experience and improves production efficiency.

[0012] Further, step S5 includes: S51: Update the current intensity according to the current intensity adjustment amount: ,in, is the adjusted current intensity; S52: Update the current frequency according to the current frequency adjustment amount: ,in, is the adjusted current frequency; S53: straightening the copper strip using the adjusted current intensity and current frequency, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0013] This application proposes a control method for the bending and straightening of copper strips. This technical solution effectively solves the hysteresis and inaccuracy problems that may be caused by relying solely on fixed electromagnetic parameter adjustment amounts by introducing a dynamic parameter adjustment mechanism. By updating the current intensity and current frequency in real time, the system can respond to changes in the hardness of the copper strip more quickly and accurately, thereby ensuring that the hardness value of the strip always remains within the target range. This method not only improves production efficiency, but also significantly improves the consistency and stability of product quality.

[0014] Furthermore, step S53 further includes: S54: adjusting the electromagnetic straightening parameter according to the electromagnetic straightening parameter adjustment amount; S55: Obtaining the inlet hardness value of the copper strip at the inlet and the conveying speed of the copper strip; S56: Calculating a first feedforward term of the current intensity and a second feedforward term of the current frequency according to the belt-entry hardness value and the conveying speed; S57: Straightening the copper strip according to the first feedforward item, the second feedforward item, and the adjusted current intensity and current frequency, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0015] The present application proposes a control method for straightening copper strips, which obtains the hardness value of the incoming strip and the conveying speed, and calculates the feedforward term to supplement the feedback control. This control method combining feedforward and feedback can adjust the electromagnetic straightening parameters more quickly and accurately.

[0016] Further, step S56 includes: S561: The formula for calculating the first feedforward term according to the input belt hardness value and the conveying speed is: ;in, is the first feedforward term, The current intensity feed-forward gain related to the speed is used to adjust the current intensity compensation required due to the change of the copper belt conveying speed; is a current intensity feedforward gain related to the in-band hardness value, used to pre-adjust the current intensity according to the in-band hardness value; is the conveying speed; is the hardness value of the belt; S562: The formula for calculating the second feedforward term according to the input belt hardness value and the conveying speed is: ;in, is the second feedforward term, It is the current frequency feed-forward gain related to the hardness value of the incoming strip, and is used to adjust the frequency compensation required due to the change in the conveying speed of the copper strip; It is the current frequency feedforward gain related to the input hardness value and is used to pre-adjust the current frequency according to the input hardness value.

[0017] Further, step S57 includes: S571: Calculate the final current intensity for straightening the copper strip according to the first feedforward item and the adjusted current intensity: ; S572: Calculate the final current frequency for straightening the copper strip according to the second feedforward term and the adjusted current frequency: ; S572: Straightening the copper strip according to the final current intensity and the final current frequency, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0018] Further, step S3 includes: S31: straightening the copper strip using the electromagnetic straightening parameters, and detecting hardness values ​​of a plurality of detection points of the copper strip in the width direction at the strip outlet; S33: Calculate a mean transverse hardness value according to the hardness values ​​of the plurality of detection points, wherein the mean transverse hardness value is the strip outlet hardness value of the copper strip at the strip outlet.

[0019] In a second aspect, a control device for straightening a copper strip is provided, which runs a control method for straightening a copper strip as described in any one of the above items, and the device comprises: Acquisition module: acquiring batch information and preset target hardness value of the copper strip to be straightened, wherein the batch information at least includes the specification and surface coating type of the copper strip; Calling module: calling electromagnetic straightening parameters matching the specifications and surface coating type of the copper strip from a preset parameter library according to the batch information; Straightening detection module: straightening the copper strip by using the electromagnetic straightening parameters, and detecting the strip hardness value of the copper strip at the strip outlet in real time; Calculation module: Calculates the deviation between the strip hardness value and the preset target hardness value, and when it exceeds the preset allowable deviation, calculates the electromagnetic straightening parameter adjustment amount according to the deviation; Straightening adjustment module: adjust the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount, and use the adjusted electromagnetic straightening parameters to straighten the copper strip, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0020] In a third aspect, the present application provides an electronic device, including a processor and a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the steps in any of the above methods are executed.

[0021] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps in any of the above methods are executed.

[0022] Beneficial effects: The control method, device, electronic device and storage medium for the bending and straightening of copper strip proposed in the present application adopt a non-contact electromagnetic induction device to straighten the copper strip, which can reduce the damage to the surface of the copper strip; obtain the batch information and preset target hardness value of the copper strip, which helps to select the appropriate initial electromagnetic straightening parameters for copper strips with different specifications and surface treatments; call the matching electromagnetic straightening parameters from the preset parameter library, and quickly set the initial straightening conditions to improve production efficiency; detect the strip hardness value in real time, and compare the strip hardness value with the preset target hardness value. When the deviation between the strip hardness value and the preset target hardness value exceeds the allowable range, a hardness control mathematical model is constructed. This real-time monitoring and dynamic adjustment method can respond to hardness changes in a timely manner; adjust the electromagnetic straightening parameters according to the constructed mathematical model, and continue straightening until the target hardness is reached. This closed-loop control method can accurately control the final hardness of the copper strip. The method realizes accurate hardness control in the bending and straightening process of the copper strip through real-time monitoring, dynamic adjustment and closed-loop control. It overcomes the limitations of traditional fixed parameter straightening methods and improves the accuracy and stability of hardness control. At the same time, the non-contact straightening method also protects the surface of the copper strip, meeting the application requirements of high-precision electronic connectors and other applications with high surface quality requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a flow chart of a control method for bending and straightening a copper strip proposed in this application.

[0024] Figure 2 This is a structural diagram of a control device for bending and straightening a copper strip proposed in this application.

[0025] Figure 3 A schematic diagram of the structure of the electronic device provided in this application.

[0026] Description of reference numerals: 201, acquisition module; 202, calling module; 203, straightening detection module; 204, calculation module; 205, straightening adjustment module; 301, processor; 302, memory; 303, communication bus; 3, electronic device. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first, second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] The following disclosure provides many different embodiments or examples for achieving the purpose of the present invention, and solves the problems of temperature loss and surface oxidation caused by the melt being affected by gas flow in the prior art.

[0030] In the field of copper strip bending and straightening, precise control of hardness is a key technology to ensure product quality. Traditional hardness control methods usually use fixed straightening parameters and lack the ability to make dynamic adjustments based on real-time feedback. This method is particularly insufficient when facing copper strips of different batches or specifications. In addition, traditional straightening parameter adjustment often relies on the experience of operators, which not only increases the difficulty of operation, but also limits production efficiency and product quality stability. In practical applications, this method is difficult to achieve precise hardness control during the bending and straightening process of copper strips, resulting in large deviations in product hardness and failure to meet customers' increasing requirements for product quality.

[0031] In order to solve this problem, the present application proposes a control method, device, electronic equipment and storage medium for bending and straightening of a copper strip.

[0032] Please refer to Figure 1In the first aspect, a control method for bending and straightening a copper strip is applied to a copper strip bending and straightening device, wherein the bending and straightening device is provided with a non-contact electromagnetic induction device composed of a plurality of electromagnetic coils along the direction of movement of the copper strip, and a hardness detection sensor is provided at the strip inlet and strip outlet of the non-contact electromagnetic induction device respectively; the method comprises the steps of: S1: Obtaining batch information and preset target hardness value of the copper strip to be straightened, wherein the batch information at least includes the specification and surface coating type of the copper strip; S2: According to the batch information, electromagnetic straightening parameters matching the specifications and surface coating type of the copper strip are called from the preset parameter library; S3: straightening the copper strip using electromagnetic straightening parameters, and detecting the hardness value of the copper strip at the strip outlet in real time; S4: Calculate the deviation between the belt hardness value and the preset target hardness value. When it exceeds the preset allowable deviation, calculate the electromagnetic straightening parameter adjustment amount according to the deviation. S5: adjusting the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount, and straightening the copper strip using the adjusted electromagnetic straightening parameters, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0033] Among them, the non-contact electromagnetic induction device refers to a straightening device composed of multiple electromagnetic coils, which straightens the copper strip by acting on it with an electromagnetic field, avoiding direct contact and thus reducing damage to the surface of the copper strip. Specifically, it can be achieved by arranging multiple electromagnetic coils along the moving direction of the copper strip, and the straightening effect can be controlled by adjusting the current intensity and frequency of the electromagnetic coils.

[0034] Among them, the hardness detection sensor refers to a device used to measure the hardness of the copper strip in real time, which can be achieved by non-contact hardness measurement technology, such as eddy current hardness measurement or ultrasonic hardness measurement. These sensors are installed at the inlet and outlet of the straightening equipment, and can obtain the initial hardness of the copper strip and the hardness after straightening in time, providing necessary data support for subsequent hardness control.

[0035] Among them, in step S2, the electromagnetic straightening parameters refer to the key parameters for controlling the operation of the non-contact electromagnetic induction device, which may specifically include current intensity, current frequency, etc. The adjustment of these parameters directly affects the intensity and distribution of the electromagnetic field, thereby affecting the straightening effect and final hardness of the copper strip.

[0036] Among them, in step S4, the electromagnetic straightening parameter adjustment amount includes at least the current intensity adjustment amount and the current frequency adjustment amount, which can be used to guide the adjustment of the electromagnetic straightening parameters according to the mathematical relationship constructed based on the hardness deviation detected in real time. Specifically, it can be implemented by using a PID control algorithm or a more complex adaptive control algorithm, and the optimal electromagnetic straightening parameter adjustment amount is calculated by analyzing factors such as the size and change trend of the hardness deviation. The preset allowable deviation is a value set in advance, which can be set specifically according to the process requirements.

[0037] This application dynamically adjusts electromagnetic straightening parameters. Compared with traditional empirical adjustment, this method has higher accuracy and automation, can meet the hardness control requirements of copper strips of different batches and specifications, and improves production efficiency and product quality consistency. At the same time, the use of non-contact electromagnetic induction devices for straightening effectively reduces damage to the surface of the copper strip, meeting the application requirements of high-precision electronic connectors and other applications with high surface quality requirements.

[0038] The working principle of the present application can be described in detail as follows: First, the copper strip enters the stretch bending straightening equipment and undergoes initial hardness measurement through the hardness detection sensor at the strip inlet. Then, the system calls the matching initial electromagnetic straightening parameters from the parameter library based on the pre-acquired batch information (including the specifications and surface coating type of the copper strip). These parameters are applied to a non-contact electromagnetic induction device, which consists of multiple electromagnetic coils arranged along the moving direction of the copper strip.

[0039] When the copper strip passes through these electromagnetic coils, it is deformed by the electromagnetic field, thus achieving the straightening effect. After the copper strip is straightened, the hardness is measured again by the hardness detection sensor at the strip outlet. The system calculates the deviation between the strip hardness value and the preset target hardness value in real time. When the deviation exceeds the preset allowable deviation, the electromagnetic straightening parameter adjustment is calculated.

[0040] The electromagnetic straightening parameter adjustment is calculated based on the PID control algorithm or a more complex adaptive control algorithm. Taking into account the size and change trend of the hardness deviation, the optimal adjustment of electromagnetic straightening parameters such as current intensity and current frequency is calculated. The system adjusts the working parameters of the electromagnetic coil in real time based on these calculation results, thereby changing the intensity and distribution of the electromagnetic field, thereby affecting the straightening effect and final hardness of the copper strip.

[0041] This process is a continuous closed-loop control process, in which the system continuously performs hardness detection, deviation calculation, and electromagnetic straightening parameter adjustment until the deviation between the output hardness value and the preset target hardness value is less than or equal to the preset allowable deviation. Through this dynamic adjustment mechanism, the present application can accurately control the hardness of the copper strip, while adapting to the needs of copper strips of different batches and specifications, thereby improving production efficiency and product quality stability.

[0042] Furthermore, the electromagnetic straightening parameters include at least current intensity and current frequency; Step S4 includes: S41: Calculate the deviation between the belt hardness value and the preset target hardness value ,in, is the preset target hardness value, is the strip hardness value at time t, for deviation; S42: Calculating the electromagnetic straightening parameter adjustment amount according to the deviation at least includes: Calculate the current intensity adjustment: ,in, is the current intensity adjustment at time t, For adjustment The proportional gain, To adjust The integral gain, is the integral term, which indicates the deviation over time The cumulative represents the deviation value at any time τ, where time τ is an integral variable, To adjust The differential gain, is the differential term, which represents the rate of change of the deviation with time t, where t is the current moment; Calculate the current frequency adjustment: ,in, is the current frequency adjustment at time t, For adjustment The proportional gain, For adjustment The integral gain, For adjustment The differential gain.

[0043] This mathematical model based on the PID (proportional-integral-differential) control algorithm has many possible implementations. For example, the control effect can be optimized by adjusting the values ​​of proportional gain, integral gain, and differential gain. Specifically, increasing the proportional gain can increase the system response speed, but may cause overshoot; increasing the integral gain can eliminate steady-state errors, but may increase system oscillations; increasing the differential gain can suppress system oscillations, but may amplify high-frequency noise.

[0044] Furthermore, the adjustment of current intensity and current frequency can be coordinated. For example, when a large deviation is detected, the current intensity can be adjusted first to quickly change the hardness; when the deviation is small, the current frequency can be fine-tuned to achieve fine control. This coordinated adjustment strategy can improve the response speed and stability of the system while ensuring control accuracy.

[0045] The technical solution of the present application achieves precise control of the hardness of the copper strip by introducing a specific mathematical model to calculate the adjustment amount of the electromagnetic straightening parameters. Thus, the problem of inaccurate deviation calculation in the traditional method is solved. Specifically, by clearly defining the electromagnetic straightening parameters including current intensity and current frequency, more adjustment space is provided for the control process. At the same time, the PID control algorithm is used to calculate the adjustment amount of the electromagnetic straightening parameters, which can finely adjust the current intensity and frequency according to the size of the deviation, the cumulative effect and the change trend.

[0046] Further, step S5 includes: S51: Update the current intensity according to the current intensity adjustment amount: ,in, is the adjusted current intensity; S52: Update the current frequency according to the current frequency adjustment amount: ,in, is the adjusted current frequency; S53: straightening the copper strip using the adjusted current intensity and current frequency, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0047] The technical solution proposed in this application effectively solves the hysteresis and inaccuracy problems that may be caused by relying solely on fixed electromagnetic straightening parameter adjustment amounts by introducing a dynamic parameter adjustment mechanism. Specifically, the solution includes the following key features: The dynamic update of the current intensity is through the formula To achieve, represents the current intensity at time t, is the calculated current intensity adjustment. In this way, the system can make precise adjustments to the current intensity based on real-time feedback information.

[0048] The current frequency is updated in a similar way, namely . Indicates the current frequency, This dynamic adjustment method enables the system to respond to different hardness requirements more flexibly.

[0049] By updating the current intensity and frequency in real time, the system can quickly respond to hardness changes and make precise adjustments so that the deviation between the final output hardness value and the preset target hardness value is controlled within the preset allowable range. This method not only improves the accuracy of hardness control, but also enhances the system's adaptability to external changes.

[0050] In some preferred embodiments, the technical solution of the present application may encounter various situations in practical applications. For example, in the process of adjusting the current intensity, it may be necessary to consider the maximum tolerance of the device. For this purpose, an upper limit value of the current intensity can be set. ,make sure Do not exceed this upper limit. Similarly, for the adjustment of current frequency, a reasonable frequency range can also be set , to ensure the safe operation of the equipment.

[0051] In addition, in order to further improve the control accuracy, an adaptive algorithm can be introduced to dynamically adjust and For example, the parameters in the hardness control mathematical model can be automatically adjusted according to historical data and current production conditions, so that the system can better adapt to different production conditions.

[0052] The technical solution of this application can respond to the changes in the hardness of the copper strip more quickly and accurately by updating the current intensity and frequency in real time, thereby ensuring that the hardness value of the strip always remains within the target range. This method not only improves production efficiency, but also significantly improves the consistency and stability of product quality.

[0053] Furthermore, step S53 further includes: S54: adjusting the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount; S55: obtaining the inlet hardness value of the copper strip at the inlet and the conveying speed of the copper strip; S56: Calculate a first feedforward item of current intensity and a second feedforward item of current frequency according to the incoming belt hardness value and the conveying speed; S57: Straightening the copper strip according to the first feedforward item, the second feedforward item, and the adjusted current intensity and current frequency, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0054] This application introduces the concept of feedforward control, by obtaining the input belt hardness value and conveying speed, and calculating the feedforward term to supplement the feedback control. This control method combining feedforward and feedback can adjust the electromagnetic straightening parameters more quickly and accurately.

[0055] Specifically, the electromagnetic straightening parameters are first adjusted using feedback control. Then the input strip hardness value and conveying speed are obtained to provide basic data for feedforward control. The feedforward term is calculated based on these data and used to adjust the current intensity and frequency respectively. Finally, the results of feedback control and feedforward control are combined to perform the final straightening of the copper strip.

[0056] Feedforward control can make adjustments in advance according to changes in the hardness of the incoming strip and the conveying speed, making up for the lag that may exist when relying solely on feedback control. This combination enables the control system to respond more quickly to changes in the characteristics of the copper strip, improving the accuracy and stability of hardness control.

[0057] There are also many options for combining feedforward control with feedback control. A simple weighted sum method can be used, or a more complex fusion algorithm such as a Kalman filter can be used. This combination not only improves control accuracy, but also enhances the robustness of the system, enabling it to better cope with changes in various production conditions.

[0058] Further, step S56 includes: S561: The formula for calculating the first feedforward term according to the input belt hardness value and the conveying speed is: ;in, is the first feedforward term, The current intensity feed-forward gain related to the speed is used to adjust the current intensity compensation required due to the change of the copper belt conveying speed; is a current intensity feedforward gain related to the in-band hardness value, used to pre-adjust the current intensity according to the in-band hardness value; is the conveying speed; is the hardness value of the belt; S562: The formula for calculating the second feedforward term according to the input belt hardness value and the conveying speed is: ;in, is the second feedforward term, It is the current frequency feed-forward gain related to the hardness value of the incoming strip, and is used to adjust the frequency compensation required due to the change in the conveying speed of the copper strip; It is the current frequency feedforward gain related to the input hardness value and is used to pre-adjust the current frequency according to the input hardness value.

[0059] The design of the above two formulas allows the system to pre-adjust the electromagnetic straightening parameters according to the real-time conveying speed and the hardness value of the copper strip. This method can provide appropriate compensation when the copper strip speed changes, ensuring the stability of the straightening effect. At the same time, by considering the hardness value of the incoming strip , the system can pre-adjust the electromagnetic straightening parameters according to the initial state of the copper strip, thereby improving the accuracy and efficiency of the straightening process.

[0060] The innovation of this feedforward control method is that it combines the dynamic characteristics (speed) and static characteristics (entry hardness) of the copper strip to achieve precise pre-adjustment of the electromagnetic straightening parameters. This can not only improve the response speed of the straightening process and reduce the number of adjustments required to achieve the target hardness, but also improve the stability and efficiency of the entire straightening process.

[0061] In practical applications, these two formulas can be adjusted according to the specific copper strip material properties and production requirements. For example, it can be determined by experimental data or empirical values. , , and The specific values ​​of these feedforward gain coefficients may vary depending on the specifications of the copper strip or the type of surface coating.

[0062] This feedforward control method can be combined with the PID control method mentioned earlier. Feedforward control can provide fast initial adjustments, while PID control can make fine subsequent adjustments. This combination can further improve the accuracy and efficiency of the straightening process.

[0063] As a preferred embodiment, an adaptive mechanism can be set to dynamically adjust these feedforward gain coefficients. For example, the feedforward gain coefficients can be continuously optimized based on historical data and real-time feedback. , , and value, enabling the system to better adapt to different production conditions and material properties.

[0064] Further, step S57 includes: S571: Calculate the final current intensity for straightening the copper strip according to the first feedforward term and the adjusted current intensity: ; S572: Calculate the final current frequency for straightening the copper strip according to the second feedforward term and the adjusted current frequency: ; S572: Straighten the copper strip according to the final current intensity and the final current frequency, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0065] The technical solution of the present application combines feedforward control with feedback control through specific calculation steps, and realizes the precise control of current intensity and current frequency during the straightening process of copper strip. With the adjusted current intensity Add together to get the final current intensity This approach not only considers the adjustment results based on feedback control, but also introduces the predictive compensation of feedforward control, which helps to respond to system changes more quickly and accurately.

[0066] Similarly, by adding the second feedforward term With the adjusted current frequency Add together to get the final current frequency This combination also combines the advantages of feedback and feedforward control, and can better adapt to the straightening needs under different working conditions.

[0067] Finally, the copper strip is straightened using the calculated final current intensity and final current frequency. The innovation of this method is that it not only utilizes the accuracy of feedback control, but also improves the response speed and anti-interference ability of the system through feedforward control. Through this composite control strategy, the strip hardness value can be more effectively controlled within the allowable deviation range of the preset target hardness value.

[0068] In some of the above embodiments of the present application, it is proposed to use electromagnetic straightening parameters to straighten the copper strip, and to detect the outlet hardness value of the copper strip in real time to control the hardness of the copper strip. However, in this process, a single outlet hardness value may not fully reflect the hardness distribution of the copper strip in the width direction. The hardness of the copper strip in the width direction may be uneven, which may cause problems in the subsequent processing process and affect the product quality. Therefore, a more comprehensive and accurate method is needed to evaluate and control the hardness of the copper strip.

[0069] Therefore, in order to solve this problem, further, step S3 includes: S31: straightening the copper strip using electromagnetic straightening parameters, and detecting hardness values ​​of multiple detection points of the copper strip in the width direction at the strip outlet; S33: Calculate the mean transverse hardness value according to the hardness values ​​of the multiple detection points, and the mean transverse hardness value is the strip outlet hardness value of the copper strip at the strip outlet.

[0070] Specifically, the hardness values ​​of multiple test points in the width direction are tested at the strip outlet. This multi-point testing method can fully reflect the hardness distribution of the copper strip in the width direction, and is helpful to find possible hardness unevenness problems.

[0071] By calculating the average of the hardness values ​​of these multiple test points, a more representative strip hardness value is obtained. This lateral hardness average is used as the strip hardness value of the copper strip at the strip outlet, providing a more accurate and comprehensive data basis for the subsequent hardness control process.

[0072] This technical solution solves the defect that single-point hardness detection may ignore the problem of uneven hardness distribution in the width direction. Through multi-point detection and mean calculation, it can not only more accurately reflect the overall hardness of the copper strip, but also indirectly reflect the uniformity of hardness, improve the quality stability of the copper strip, and meet the requirements of high-precision processing.

[0073] In a second aspect, a control device for straightening a copper strip is provided, which operates a control method for straightening a copper strip as described above, and the device comprises: Acquisition module 201: Acquisition of batch information and preset target hardness value of the copper strip to be straightened, wherein the batch information at least includes the specification and surface coating type of the copper strip; Calling module 202: calling electromagnetic straightening parameters matching the specifications and surface coating type of the copper strip from a preset parameter library according to the batch information; Straightening detection module 203: straightening the copper strip using electromagnetic straightening parameters, and detecting the strip hardness value of the copper strip at the strip outlet in real time; Calculation module 204: Calculate the deviation between the belt hardness value and the preset target hardness value, and when it exceeds the preset allowable deviation, calculate the electromagnetic straightening parameter adjustment amount according to the deviation; Straightening adjustment module 205: adjusts the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount, and uses the adjusted electromagnetic straightening parameters to straighten the copper strip so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0074] The control device proposed in this application realizes the automatic control of the copper strip bending and straightening process through modular design. The acquisition module 201 is responsible for obtaining batch information and target hardness value, providing basic data for the entire control process. The calling module 202 calls the matching electromagnetic straightening parameters from the preset parameter library according to the batch information to ensure the applicability of the initial straightening parameters. The straightening detection module 203 performs the actual straightening operation and monitors the belt hardness in real time, providing real-time feedback for subsequent hardness control. The calculation module 204 is responsible for calculating the hardness deviation and calculating the electromagnetic straightening parameter adjustment amount, providing a basis for the electromagnetic straightening parameter adjustment. The straightening adjustment module 205 adjusts the electromagnetic straightening parameters according to the mathematical model, and uses the adjusted parameters for straightening to achieve accurate hardness control targets.

[0075] An important advantage of this modular design is its flexibility and scalability. For example, the acquisition module 201 can obtain batch information in a variety of ways, such as manual input, barcode scanning, or docking with a production management system. The call module 202 can be connected to a continuously updated parameter library to adapt to new material specifications or coating types. The straightening detection module 203 can integrate multiple types of hardness detection sensors to meet different measurement requirements.

[0076] The calculation module 204 can use a variety of algorithms to calculate the electromagnetic straightening parameter adjustment. For example, an algorithm based on PID (proportional-integral-differential) control can be used, or a more complex machine learning algorithm such as neural network or fuzzy logic control can be used. This flexibility allows the device to be optimized according to different production requirements and material properties.

[0077] The design of the straightening adjustment module 205 can also be implemented in a variety of ways. It can use a stepper motor to accurately control the position of the electromagnetic coil, or use a high-precision current controller to adjust the electromagnetic field strength. In addition, the module can also include safety mechanisms, such as automatically stopping the straightening process when the parameters exceed the preset range to prevent damage to the copper strip.

[0078] The cooperation between these modules enables the entire control process to be automated and executed efficiently. For example, when the acquisition module 201 receives new batch information, it can trigger the calling module 202 to automatically update the electromagnetic straightening parameters. The real-time data of the straightening detection module 203 can be quickly processed by the calculation module 204, so that the straightening adjustment module 205 can respond to hardness changes in a timely manner. This real-time and adaptability is unmatched by the traditional fixed parameter control method.

[0079] The control device of the present application realizes the precise control of the hardness of the copper strip during the bending and straightening process by converting the complex control algorithm into an executable hardware module. This automated control system can continuously monitor and adjust the straightening parameters to ensure that the strip hardness always remains near the target value. Compared with manual control, this method greatly improves production efficiency, reduces human errors, and ensures the consistency of product quality.

[0080] Please refer to Figure 3 , Figure 3The present application provides a structural schematic diagram of an electronic device provided in an embodiment of the present application. The present application provides an electronic device 3, including: a processor 301 and a memory 302. The processor 301 and the memory 302 are interconnected and communicate with each other through a communication bus 303 and / or other forms of connection mechanisms (not shown). The memory 302 stores computer-readable instructions executable by the processor 301. When the electronic device is running, the processor 301 executes the computer-readable instructions to execute the method in any optional implementation of the above embodiment to achieve the following functions: obtaining batch information and a preset target hardness value of the copper strip to be straightened, the batch information at least including the copper strip; The invention discloses a method for straightening the copper strip according to the batch information, the electromagnetic straightening parameters that match the specifications and surface coating type of the copper strip are called from the preset parameter library; the copper strip is straightened by using the electromagnetic straightening parameters, and the hardness value of the copper strip at the strip outlet is detected in real time; the deviation between the strip hardness value and the preset target hardness value is calculated, and when the deviation exceeds the preset allowable deviation, a mathematical model for hardness control of the copper strip is constructed according to the deviation; the electromagnetic straightening parameters are adjusted according to the mathematical model for hardness control of the copper strip, and the copper strip is straightened by using the adjusted electromagnetic straightening parameters, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0081] The embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method in any optional implementation mode of the above embodiment is executed to achieve the following functions: obtaining batch information and preset target hardness value of a copper strip to be straightened, the batch information at least including the specification and surface coating type of the copper strip; calling electromagnetic straightening parameters matching the specification and surface coating type of the copper strip from a preset parameter library according to the batch information; straightening the copper strip using the electromagnetic straightening parameters, and detecting the strip outlet hardness value of the copper strip at the strip outlet in real time; calculating the deviation between the strip outlet hardness value and the preset target hardness value, and when the deviation exceeds the preset allowable deviation, constructing a copper strip hardness control mathematical model according to the deviation; adjusting the electromagnetic straightening parameters according to the copper strip hardness control mathematical model, and straightening the copper strip using the adjusted electromagnetic straightening parameters, so that the deviation between the final strip outlet hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0082] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0083] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0084] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0085] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0086] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A control method for bending and straightening of copper strip, characterized in that: Applied to a copper strip bending and straightening device, the bending and straightening device is provided with a non-contact electromagnetic induction device composed of a plurality of electromagnetic coils along the moving direction of the copper strip, and the strip inlet and strip outlet of the non-contact electromagnetic induction device are respectively provided with hardness detection sensors; the method comprises the steps of: S1: Obtaining batch information and a preset target hardness value of the copper strip to be straightened, wherein the batch information at least includes the specification and surface coating type of the copper strip; S2: According to the batch information, calling electromagnetic straightening parameters matching the specifications and surface coating type of the copper strip from a preset parameter library; S3: straightening the copper strip by using the electromagnetic straightening parameters, and detecting the strip hardness value of the copper strip at the strip outlet in real time; S4: Calculating the deviation between the strip hardness value and the preset target hardness value, and when the deviation exceeds the preset allowable deviation, calculating the electromagnetic straightening parameter adjustment amount according to the deviation; S5: adjusting the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount, and straightening the copper strip using the adjusted electromagnetic straightening parameters, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

2. A method for controlling the bending and straightening of a copper strip according to claim 1, characterized in that: The electromagnetic straightening parameters include at least current intensity and current frequency; Step S4 includes: S41: Calculating the deviation between the outlet hardness value and the preset target hardness value ,in, is the preset target hardness value, is the strip hardness value at time t, for the said deviation; S42: Calculating the electromagnetic straightening parameter adjustment amount according to the deviation at least includes: Calculate the current intensity adjustment: ,in, is the current intensity adjustment at time t, For adjustment The proportional gain, To adjust The integral gain, is the integral term, which indicates the deviation over time The cumulative represents the deviation value at any time τ, where time τ is an integral variable, To adjust The differential gain, is the differential term, which represents the rate of change of the deviation with time t, where t is the current moment; Calculate the current frequency adjustment: ,in, is the current frequency adjustment at time t, For adjustment The proportional gain, For adjustment The integral gain, For adjustment The differential gain.

3. A method for controlling the bending and straightening of a copper strip according to claim 2, characterized in that: Step S5 includes: S51: Update the current intensity according to the current intensity adjustment amount: ,in, is the adjusted current intensity; S52: Update the current frequency according to the current frequency adjustment amount: ,in, is the adjusted current frequency; S53: straightening the copper strip using the adjusted current intensity and current frequency, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

4. A method for controlling the bending and straightening of a copper strip according to claim 3, characterized in that: Step S53 includes: S54: adjusting the electromagnetic straightening parameter according to the electromagnetic straightening parameter adjustment amount, and obtaining the inlet hardness value of the copper strip at the inlet, and the conveying speed of the copper strip; S55: Calculating a first feedforward term of the current intensity and a second feedforward term of the current frequency according to the belt-entry hardness value and the conveying speed; S56: Straightening the copper strip according to the first feedforward item, the second feedforward item, and the adjusted current intensity and current frequency, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

5. A method for controlling the bending and straightening of a copper strip according to claim 4, characterized in that: Step S56 includes: S561: The formula for calculating the first feedforward term according to the input belt hardness value and the conveying speed is: ;in, is the first feedforward term, The current intensity feed-forward gain related to the speed is used to adjust the current intensity compensation required due to the change of the copper belt conveying speed; is a current intensity feedforward gain related to the in-band hardness value, used to pre-adjust the current intensity according to the in-band hardness value; is the conveying speed; is the hardness value of the belt; S562: The formula for calculating the second feedforward term according to the input belt hardness value and the conveying speed is: ;in, is the second feedforward term, It is the current frequency feed-forward gain related to the hardness value of the incoming strip, and is used to adjust the frequency compensation required due to the change in the conveying speed of the copper strip; It is the current frequency feedforward gain related to the input hardness value and is used to pre-adjust the current frequency according to the input hardness value.

6. A method for controlling the bending and straightening of a copper strip according to claim 5, characterized in that: Step S57 includes: S571: Calculate the final current intensity for straightening the copper strip according to the first feedforward item and the adjusted current intensity: ; S572: Calculate the final current frequency for straightening the copper strip according to the second feedforward term and the adjusted current frequency: ; S572: Straightening the copper strip according to the final current intensity and the final current frequency, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

7. The method for controlling the bending and straightening of a copper strip according to claim 1, characterized in that: Step S3 includes: S31: straightening the copper strip using the electromagnetic straightening parameters, and detecting hardness values ​​of a plurality of detection points of the copper strip in the width direction at the strip outlet; S33: Calculate a mean transverse hardness value according to the hardness values ​​of the plurality of detection points, wherein the mean transverse hardness value is the strip outlet hardness value of the copper strip at the strip outlet.

8. A control device for bending and straightening a copper strip, characterized in that: A control method for bending and straightening a copper strip as described in any one of claims 1 to 7 is implemented, wherein the device comprises: Acquisition module: acquiring batch information and preset target hardness value of the copper strip to be straightened, wherein the batch information at least includes the specification and surface coating type of the copper strip; Calling module: calling electromagnetic straightening parameters matching the specifications and surface coating type of the copper strip from a preset parameter library according to the batch information; Straightening detection module: straightening the copper strip by using the electromagnetic straightening parameters, and detecting the strip hardness value of the copper strip at the strip outlet in real time; Calculation module: Calculates the deviation between the strip hardness value and the preset target hardness value, and when it exceeds the preset allowable deviation, calculates the electromagnetic straightening parameter adjustment amount according to the deviation; Straightening adjustment module: adjust the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount, and use the adjusted electromagnetic straightening parameters to straighten the copper strip, so that the deviation between the final strip hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

9. An electronic device, characterized in that: The method comprises a processor and a memory, wherein the memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the steps in the method according to any one of claims 1 to 7 are executed.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are executed.

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