Control method and device for red copper strip stretch-bend straightening, electronic equipment and storage medium

Abstract

The application provides a control method and device for red copper strip stretch-bending straightening, electronic equipment and a storage medium, and is applied to the technical field of metal material processing. The method uses a non-contact electromagnetic induction device to perform stretch-bending straightening on the red copper strip, thereby reducing damage to the surface of the red copper strip. Batch information of the red copper strip and a preset target hardness value are obtained, which helps to select appropriate initial electromagnetic straightening parameters for red copper strips of different specifications and surface treatments. Matching electromagnetic straightening parameters are called from a preset parameter library, the initial straightening conditions can be quickly set, and the production efficiency is improved. The strip hardness value is detected in real time, and the detected strip hardness value is compared with the preset target hardness value. When the deviation between the two exceeds the allowed range, a red copper strip hardness control mathematical model is constructed. The electromagnetic straightening parameters are adjusted according to the red copper strip hardness control mathematical model, and accurate hardness control in the red copper strip stretch-bending straightening process is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal material processing, in particular to a control method and device for copper strip stretch bending straightening, an electronic device and a storage medium. BACKGROUND

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

[0003] However, as the production rhythm speeds up and the product diversifies, customers' demands for the quality of copper strips are becoming higher and more diversified, which makes it necessary for manufacturers to accurately control the stretch bending straightening process of each batch of copper strips to ensure that the hardness meets the customers' demands.

[0004] In the prior art, the traditional hardness control method often uses fixed straightening parameters, which lacks the ability to dynamically adjust according to real-time feedback, which is particularly insufficient when facing different batches or specifications of copper strips. Moreover, traditional straightening parameter adjustment often relies on the experience of operators, which not only increases the operation difficulty, but also limits the production efficiency and the stability of product quality.

[0005] In addition, the existing stretch bending straightening equipment usually uses contact straightening, which inevitably damages the surface of the copper strip, especially for customers who require the surface of the copper strip to remain flat, such as customers who produce high-precision electronic connectors.

[0006] Therefore, there is a lack of a method that can accurately control the hardness of the copper strip and minimize the damage to the surface of the copper strip in the prior art. SUMMARY

[0007] In view of the deficiencies of the prior art, the control method and device for copper strip stretch bending straightening, the electronic device and the storage medium provided by the present application are applied to the technical field of metal material processing, which has 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 copper strip stretch bending straightening is applied to a copper strip stretch bending straightening device, the stretch bending straightening device is provided with a non-contact electromagnetic induction device composed of a plurality of electromagnetic coils in the direction of the movement of the copper strip, and the entry and exit of the non-contact electromagnetic induction device are respectively provided with hardness detection sensors; the method comprises the steps of:

[0009] S1: Obtain batch information of the red copper strip to be straightened and a preset target hardness value, wherein the batch information at least includes a specification and a surface plating type of the red copper strip;

[0010] S2: According to the batch information, call the electromagnetic straightening parameters matched with the specification and the surface plating type of the red copper strip from a preset parameter library;

[0011] S3: Straighten the red copper strip by using the electromagnetic straightening parameters, and detect the hardness value of the red copper strip at the exit in real time;

[0012] S4: Calculate the deviation between the hardness value at the exit and the preset target hardness value, and when the deviation exceeds a preset allowable deviation, calculate the electromagnetic straightening parameter adjustment amount according to the deviation;

[0013] S5: Adjust the electromagnetic straightening parameters according to the calculated electromagnetic straightening parameter adjustment amount, and straighten the red copper strip by using the adjusted electromagnetic straightening parameters, so that the deviation between the final hardness value at the exit and the preset target hardness value is less than or equal to the preset allowable deviation.

[0014] The control method for the red copper strip straightening provided in the present application adopts a non-contact electromagnetic induction device for the straightening of the red copper strip, which can reduce the damage to the surface of the red copper strip. The batch information of the red copper strip and the preset target hardness value are obtained, which helps to select appropriate initial electromagnetic straightening parameters for red copper strips of different specifications and surface treatments. The matched electromagnetic straightening parameters are called from a preset parameter library, which can quickly set the initial straightening conditions and improve the production efficiency. The hardness value at the exit is detected in real time, and the hardness value at the exit is compared with the preset target hardness value. When the deviation between the hardness value at the exit 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. The electromagnetic straightening parameters are adjusted according to the constructed mathematical model, and the straightening continues until the target hardness is reached. This closed-loop control method can accurately control the final hardness of the red copper strip. Through real-time monitoring, dynamic adjustment and closed-loop control, the method realizes accurate hardness control in the straightening process of the red copper strip. It overcomes the limitations of the traditional fixed parameter straightening method, improves the accuracy and stability of the hardness control. At the same time, the non-contact straightening method also protects the surface of the red copper strip, meeting the high surface quality requirements of high-precision electronic connectors and other applications.

[0015] Further, the electromagnetic straightening parameters at least include current intensity and current frequency;

[0016] Step S4 includes:

[0017] S41: Calculate the deviation between the hardness value at the exit and the preset target hardness value ,in, To preset the target hardness value, Let be the hardness value of the strip at time t. The deviation is mentioned above;

[0018] S42: The electromagnetic straightening parameter adjustment amount calculated based on the aforementioned deviation includes at least the following:

[0019] Calculate the current intensity adjustment:

[0020] ,in, Let be the adjustment amount of the current intensity at time t. For adjustment proportional gain, To adjust Integral gain, The integral term represents the deviation over time. The cumulative total Let represent the deviation value at any time τ, where time τ is an integral variable. To adjust The differential gain, Let be the differential term, representing the rate of change of the deviation with time t, where t is the current time.

[0021] Calculate the current frequency adjustment amount:

[0022] ,in, Let be the current frequency adjustment amount at time t. For adjustment proportional gain, For adjustment Integral gain, For adjustment The differential gain.

[0023] This application proposes a control method for straightening copper strip by bending. It accurately calculates the deviation between the strip's hardness value and the target hardness value, providing a clear formula for deviation calculation to ensure accuracy and consistency. Then, a PID control algorithm is used to calculate the adjustment amount of the electromagnetic straightening parameters. This allows for fine adjustment of the current intensity and frequency based on the magnitude of the deviation, cumulative effect, and trend, resulting in better control of the copper strip's hardness and improved product quality consistency and stability. Simultaneously, this automated control method reduces reliance on operator experience and improves production efficiency.

[0024] Furthermore, step S5 includes:

[0025] S51: Update the current intensity based on the current intensity adjustment amount:

[0026] wherein, is the adjusted current intensity;

[0027] S52: updating the current frequency according to the current frequency adjustment amount;

[0028] wherein, is the adjusted current frequency;

[0029] S53: straightening the red copper strip using the adjusted current intensity and current frequency, so that the deviation between the final out-band hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0030] The control method for red copper strip stretch-bending straightening provided in the present application effectively solves the problems of hysteresis and inaccuracy caused by relying only on fixed electromagnetic parameter adjustment amount by introducing a dynamic parameter adjustment mechanism. By updating the current intensity and current frequency in real time, the system can respond more quickly and accurately to changes in red copper strip hardness, thereby ensuring that the out-band hardness value always remains within the target range. This method not only improves production efficiency, but also significantly improves the consistency and stability of product quality.

[0031] Further, step S53 further comprises:

[0032] S54: adjusting the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount;

[0033] S55: obtaining the in-band hardness value of the red copper strip at the in-band port and the conveying speed of the red copper strip;

[0034] S56: calculating a first feedforward term of the current intensity and a second feedforward term of the current frequency according to the in-band hardness value and the conveying speed, respectively;

[0035] S57: straightening the red copper strip according to the first feedforward term, the second feedforward term, and the adjusted current intensity and current frequency, so that the deviation between the final out-band hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0036] The control method for red copper strip stretch-bending straightening provided in the present application calculates the feedforward term to supplement feedback control by obtaining the in-band hardness value and the conveying speed. This control method combining feedforward and feedback can adjust the electromagnetic straightening parameters more quickly and accurately.

[0037] Further, step S56 comprises:

[0038] S561: the formula for calculating the first feedforward term according to the strip-in hardness value and the conveying speed is: ; wherein, is the first feedforward term, is a speed-related current intensity feedforward gain for adjusting the current intensity compensation required due to the change in the conveying speed of the red copper strip; is a strip-in hardness value-related current intensity feedforward gain for pre-adjusting the current intensity according to the strip-in hardness value; is the conveying speed; is the strip-in hardness value;

[0039] S562: the formula for calculating the second feedforward term according to the strip-in hardness value and the conveying speed is: ; wherein, is the second feedforward term, is a strip-in hardness value-related current frequency feedforward gain for adjusting the frequency compensation required due to the change in the conveying speed of the red copper strip; is a strip-in hardness value-related current frequency feedforward gain for pre-adjusting the current frequency according to the strip-in hardness value.

[0040] Further, step S57 comprises:

[0041] S571: the final current intensity for straightening the red copper strip is calculated according to the first feedforward term and the adjusted current intensity: ;

[0042] S572: the final current frequency for straightening the red copper strip is calculated according to the second feedforward term and the adjusted current frequency: ;

[0043] S572: the red copper strip is straightened according to the final current intensity and the final current frequency, so that the deviation between the final strip-out hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0044] Further, step S3 comprises:

[0045] S31: the red copper strip is straightened using the electromagnetic straightening parameters, and the hardness values of multiple detection points in the width direction of the red copper strip at the strip-out port are detected;

[0046] S33: the transverse hardness average value is calculated according to the hardness values of the multiple detection points, and the transverse hardness average value is the strip-out hardness value of the red copper strip at the strip-out port.

[0047] In a second aspect, a control device for straightening a red copper strip by stretch bending, which operates a control method for straightening a red copper strip by stretch bending according to any one of the preceding aspects, comprises:

[0048] The acquisition module acquires batch information of the red copper strip to be straightened and a preset target hardness value, and the batch information at least includes a specification and a surface plating type of the red copper strip.

[0049] The calling module calls electromagnetic straightening parameters matched with the specification and the surface plating type of the red copper strip from a preset parameter library according to the batch information.

[0050] The straightening detection module straightens the red copper strip by using the electromagnetic straightening parameters and detects a hardness value of the red copper strip at an outlet in real time.

[0051] The calculation module calculates a deviation between the hardness value at the outlet and the preset target hardness value, calculates an electromagnetic straightening parameter adjustment amount according to the deviation when the deviation exceeds a preset allowable deviation, and adjusts the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount.

[0052] The straightening adjustment module adjusts the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount, straightens the red copper strip by using the adjusted electromagnetic straightening parameters, and makes a final deviation between the hardness value at the outlet and the preset target hardness value less than or equal to the preset allowable deviation.

[0053] In a third aspect, the present application provides an electronic device, which comprises a processor and a memory, and the memory stores computer readable instructions, when the computer readable instructions are executed by the processor, the steps in any one of the above methods are run.

[0054] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the steps in any one of the above methods are run.

[0055] Beneficial effects: The control method, device, electronic equipment and storage medium for red copper strip stretch bending straightening proposed in the application, the method uses a non-contact electromagnetic induction device for red copper strip stretch bending straightening, which can reduce damage to the surface of the red copper strip; the batch information of the red copper strip and the preset target hardness value are obtained, which helps to select appropriate initial electromagnetic straightening parameters for red copper strips of different specifications and surface treatments; the matched electromagnetic straightening parameters are called from the preset parameter library, which can quickly set the initial straightening conditions and improve the production efficiency; the strip hardness value is detected in real time, and the strip hardness value is compared with the preset target hardness value, when the deviation between the strip hardness value and the preset target hardness value exceeds the allowed range, a hardness control mathematical model is constructed. This real-time monitoring and dynamic adjustment method can respond to hardness changes in time; the electromagnetic straightening parameters are adjusted according to the constructed mathematical model, and the straightening continues until the target hardness is reached. This closed-loop control method can accurately control the final hardness of the red copper strip. Through real-time monitoring, dynamic adjustment and closed-loop control, the method realizes accurate hardness control in the red copper strip stretch bending straightening process. It overcomes the limitations of traditional fixed parameter straightening methods, improves the accuracy and stability of hardness control. At the same time, the non-contact straightening method also protects the surface of the red copper strip, meeting the high-precision electronic connector and other high-surface quality requirements of the application. BRIEF DESCRIPTION OF DRAWINGS

[0056] Figure 1 A flowchart of a red copper strip stretch bending straightening control method proposed in the application.

[0057] Figure 2 A structure diagram of a red copper strip stretch bending straightening control device proposed in the application.

[0058] Figure 3 A structure diagram of an electronic equipment provided in the application.

[0059] Label explanation: 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 equipment. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein 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 claimed present application, but only represents 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 creative work fall within the scope of the present application.

[0061] It should be noted that similar reference numerals and letters refer to similar items throughout the accompanying drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0062] The following disclosure provides many different embodiments or examples for implementing the purposes of the present application, solving the problems of temperature loss and surface oxidation caused by the influence of air flow on the melt in the prior art.

[0063] In the field of red copper strip stretch bending straightening, accurate control of hardness is a key technology to ensure product quality. The traditional hardness control method usually uses fixed straightening parameters, which lacks the ability to dynamically adjust according to real-time feedback. This method is particularly inadequate when faced with different batches or specifications of red copper strips. In addition, traditional straightening parameter adjustment often relies on the experience of operators, which not only increases the operation difficulty, but also limits the production efficiency and stability of product quality. In practical application, this method is difficult to achieve accurate hardness control in the red copper strip stretch bending straightening process, resulting in large product hardness deviation, which cannot meet the increasingly high requirements of customers for product quality.

[0064] To solve this problem, the present application provides a control method and device for red copper strip stretch bending straightening, electronic equipment and storage medium.

[0065] Please refer to Figure 1 , in a first aspect, a control method for red copper strip stretch bending straightening is applied to a red copper strip stretch bending straightening device. The non-contact electromagnetic induction device composed of multiple electromagnetic coils is arranged along the direction of movement of the red copper strip. The entry and exit of the non-contact electromagnetic induction device are respectively provided with hardness detection sensors. The method comprises the following steps:

[0066] S1: obtaining batch information and a preset target hardness value of the red copper strip to be straightened, the batch information at least including the specification and surface plating type of the red copper strip;

[0067] S2: According to the batch information, call the electromagnetic straightening parameters matched with the specification and surface coating type of the red copper strip from the preset parameter library;

[0068] S3: Straighten the red copper strip using the electromagnetic straightening parameters, and detect the strip hardness value at the strip outlet in real time;

[0069] S4: Calculate the deviation between the strip hardness value and the preset target hardness value, and when the preset allowable deviation is exceeded, calculate the electromagnetic straightening parameter adjustment amount according to the deviation;

[0070] S5: Adjust the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount, and straighten the red 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.

[0071] Among them, the non-contact electromagnetic induction device refers to a straightening equipment composed of multiple electromagnetic coils, which acts on the red copper strip for straightening through electromagnetic field, avoiding direct contact and reducing damage to the surface of the red copper strip. Specifically, it can be achieved by arranging multiple electromagnetic coils along the movement direction of the red copper strip, and adjusting the current intensity and frequency of the electromagnetic coils to control the straightening effect.

[0072] Among them, the hardness detection sensor refers to a device for measuring the hardness of the red copper strip in real time, which can be realized by non-contact hardness measurement technology such as eddy current hardness measurement or ultrasonic hardness measurement. These sensors are installed at the strip inlet and outlet of the straightening equipment, which can obtain the initial hardness and straightened hardness of the red copper strip in time, providing necessary data support for subsequent hardness control.

[0073] 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 can include current intensity, current frequency, etc. The adjustment of these parameters directly affects the strength and distribution of the electromagnetic field, thereby affecting the straightening effect and final hardness of the red copper strip.

[0074] Among them, in step S4, the electromagnetic straightening parameter adjustment amount includes at least current intensity adjustment amount and current frequency adjustment amount, which can be calculated according to the mathematical relationship constructed by the real-time detected hardness deviation, used to guide the adjustment of the electromagnetic straightening parameters. Specifically, it can be realized by using PID control algorithm or more complex adaptive control algorithm, by analyzing the size, change trend and other factors of the hardness deviation, to calculate the optimal electromagnetic straightening parameter adjustment amount. The preset allowable deviation is a value set in advance, which can be set according to process requirements.

[0075] The application adjusts the electromagnetic straightening parameters dynamically. Compared with the traditional empirical adjustment, this method has higher precision and automation, can adapt to the hardness control requirements of different batches and specifications of red copper strips, and improves the production efficiency and consistency of product quality. At the same time, the non-contact electromagnetic induction device is used for straightening, which effectively reduces the damage to the surface of the red copper strip and meets the application requirements of high-precision electronic connectors and other high-surface-quality requirements.

[0076] The working principle of the application can be described in detail as follows: first, the red copper strip enters the stretch-bend-straightening equipment and is measured for initial hardness by the hardness detection sensor at the entry port. Then, the system calls the matched initial electromagnetic straightening parameters from the parameter library according to the batch information (including the specification and surface plating type of the red copper strip) obtained in advance. These parameters are applied to the non-contact electromagnetic induction device, which is composed of multiple electromagnetic coils arranged along the motion direction of the red copper strip.

[0077] When the red copper strip passes through these electromagnetic coils, it is deformed under the action of the electromagnetic field, thereby achieving the straightening effect. After the red copper strip is straightened, the hardness is measured again by the hardness detection sensor at the exit port. The system calculates the deviation between the strip hardness value and the preset target hardness value in real time, and calculates the electromagnetic straightening parameter adjustment amount when the deviation exceeds the preset allowable deviation.

[0078] The electromagnetic straightening parameter adjustment amount is calculated based on the PID control algorithm or a more complex adaptive control algorithm, considering factors such as the size of the hardness deviation and the change trend, to calculate the optimal adjustment amount of electromagnetic straightening parameters such as current intensity and current frequency. The system adjusts the working parameters of the electromagnetic coils in real time according to these calculation results, thereby changing the strength and distribution of the electromagnetic field and further affecting the straightening effect and final hardness of the red copper strip.

[0079] This process is a continuous closed-loop control process, and the system continuously performs hardness detection, deviation calculation, and electromagnetic straightening parameter adjustment until the deviation between the exit hardness value and the preset target hardness value is less than or equal to the preset allowable deviation. Through this dynamic adjustment mechanism, the application can accurately control the hardness of the red copper strip while adapting to the needs of different batches and specifications of red copper strips, thereby improving the production efficiency and stability of product quality.

[0080] Further, the electromagnetic straightening parameters at least include current intensity and current frequency;

[0081] Step S4 includes:

[0082] S41: Calculate the deviation between the strip hardness value and the preset target hardness value , wherein, is the preset target hardness value, is the exit strip hardness value at time t, For deviation;

[0083] S42: The adjustment amount for electromagnetic straightening parameters calculated based on the deviation should at least include:

[0084] Calculate the current intensity adjustment:

[0085] ,in, Let be the adjustment amount of the current intensity at time t. For adjustment proportional gain, To adjust Integral gain, The integral term represents the deviation over time. The cumulative total Let represent the deviation value at any time τ, where time τ is an integral variable. To adjust The differential gain, Let be the differential term, representing the rate of change of the deviation with time t, where t is the current time.

[0086] Calculate the current frequency adjustment amount:

[0087] ,in, Let be the current frequency adjustment amount at time t. For adjustment proportional gain, For adjustment Integral gain, For adjustment The differential gain.

[0088] This mathematical model based on the PID (Proportional-Integral-Derivative) control algorithm has several possible implementations. For example, the control effect can be optimized by adjusting the values ​​of the proportional gain, integral gain, and derivative gain. Specifically, increasing the proportional gain can improve the system response speed, but may lead to overshoot; increasing the integral gain can eliminate steady-state error, but may increase system oscillation; increasing the derivative gain can suppress system oscillation, but may amplify high-frequency noise.

[0089] Furthermore, the adjustment of current intensity and current frequency can be performed in tandem. For example, when a large deviation is detected, the current intensity can be adjusted first to quickly change the stiffness; when the deviation is small, the current frequency can be fine-tuned to achieve precise control. This synergistic adjustment strategy can improve the system's response speed and stability while ensuring control accuracy.

[0090] The technical solution of the present application introduces a specific mathematical model to calculate the electromagnetic straightening parameter adjustment amount, thereby realizing accurate control of the hardness of red copper strips. Thus, the problem of inaccurate deviation calculation in the traditional method is solved. Specifically, the electromagnetic straightening parameters including the current intensity and the current frequency are defined, thereby providing more adjustment space for the control process. Meanwhile, the PID control algorithm is used to calculate the electromagnetic straightening parameter adjustment amount, thereby finely adjusting the current intensity and the frequency according to the size, cumulative effect and change trend of the deviation.

[0091] Further, the step S5 comprises:

[0092] S51: updating the current intensity according to the current intensity adjustment amount:

[0093] wherein, is the adjusted current intensity;

[0094] S52: updating the current frequency according to the current frequency adjustment amount:

[0095] wherein, is the adjusted current frequency;

[0096] S53: straightening the red copper strip using the adjusted current intensity and the 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.

[0097] The technical solution proposed in the present application introduces a dynamic parameter adjustment mechanism, thereby effectively solving the problems of hysteresis and inaccuracy that may be caused by relying only on fixed electromagnetic straightening parameter adjustment amount. Specifically, the scheme comprises the following key features:

[0098] The dynamic updating of the current intensity is realized by the formula wherein, represents the current intensity at time t, is the calculated current intensity adjustment amount. In this way, the system can accurately adjust the current intensity according to real-time feedback information.

[0099] The updating of the current frequency adopts a similar method, i.e. . represents the current current frequency, is the current frequency adjustment amount. This dynamic adjustment method enables the system to more flexibly cope with different hardness requirements.

[0100] By updating the current intensity and frequency in real time, the system can quickly respond to changes in hardness and make precise adjustments, so that the deviation between the final strip hardness value and the preset target hardness value is controlled within the preset allowed range. This method not only improves the accuracy of hardness control, but also enhances the system's adaptability to external changes.

[0101] In some preferred ways, the technical solution of the present application may encounter various situations in practical application. For example, during the current intensity adjustment process, the maximum bearing capacity of the equipment may need to be considered. For this purpose, an upper limit value of the current intensity can be set to ensure that does not exceed this upper limit. Similarly, for the adjustment of the current frequency, a reasonable frequency range

[0102] can also be set to ensure the safe operation of the equipment.

[0103] In addition, in order to further improve the control accuracy, an adaptive algorithm can be introduced to dynamically adjust and calculation method. For example, according to historical data and current production conditions, the parameters in the hardness control mathematical model can be automatically adjusted to make the system better adapt to different production conditions.

[0104] The technical solution of the present application updates the current intensity and frequency in real time, so that the system can respond more quickly and accurately to changes in red copper strip hardness, thereby ensuring that the strip hardness value always remains within the target range. This method not only improves production efficiency, but also significantly improves the consistency and stability of product quality.

[0105] Further, step S53 further comprises:

[0106] S54: adjusting the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount;

[0107] S55: obtaining the strip hardness value of the red copper strip at the strip inlet, and the conveying speed of the red copper strip;

[0108] S56: calculating a first feedforward term of the current intensity and a second feedforward term of the current frequency according to the strip hardness value and the conveying speed, respectively;

[0109] S57: straightening the red copper strip according to the first feedforward term, the second feedforward term, 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 allowed deviation.

[0110] The present application introduces the concept of feedforward control, by obtaining the strip hardness value and conveying speed, calculating the feedforward term to supplement the feedback control. This combination of feedforward and feedback control method can more quickly and accurately adjust the electromagnetic straightening parameters.

[0111] Specifically, first, the electromagnetic straightening parameters are adjusted by feedback control. Then the strip hardness value and conveying speed are obtained to provide basic data for feedforward control. According to these data, the feedforward term is calculated, which is used to adjust the current intensity and frequency respectively. Finally, the results of feedback control and feedforward control are combined to straighten the red copper strip.

[0112] The feedforward control can make adjustments in advance according to the changes in strip hardness and conveying speed, making up for the possible hysteresis of relying solely on feedback control. This combination makes the control system respond more quickly to changes in the characteristics of the red copper strip, improving the accuracy and stability of the hardness control.

[0113] The combination of feedforward control and feedback control can also have multiple options. Simple weighted sum method can be used, or more complex fusion algorithm such as Kalman filter can be used. This combination not only improves the control accuracy, but also enhances the robustness of the system, making it better able to cope with changes in various production conditions.

[0114] Further, step S56 includes:

[0115] S561: The formula for calculating the first feedforward term according to the strip hardness value and conveying speed is: ; wherein, is the first feedforward term, is the current intensity feedforward gain related to the conveying speed, used to adjust the current intensity compensation required due to changes in the conveying speed of the red copper strip; is the current intensity feedforward gain related to the strip hardness value, used to pre-adjust the current intensity according to the strip hardness value; is the conveying speed; is the strip hardness value;

[0116] S562: The formula for calculating the second feedforward term according to the strip hardness value and conveying speed is: ; wherein, is the second feedforward term, is the current frequency feedforward gain related to the strip hardness value, used to adjust the frequency compensation required due to changes in the conveying speed of the red copper strip; is the current frequency feedforward gain related to the strip hardness value, used to pre-adjust the current frequency according to the strip hardness value.

[0117] The design of the two formulas above allows the system to pre-adjust the electromagnetic straightening parameters based on the real-time conveying speed and input hardness of the copper strip. This is achieved by introducing the reciprocal of the speed. This method can provide appropriate compensation when the speed of the copper strip changes, ensuring the stability of the straightening effect. Simultaneously, it considers the input strip hardness value... 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.

[0118] The innovation of this feedforward control method lies in its combination of the dynamic characteristics (speed) and static characteristics (input hardness) of the copper strip, enabling precise pre-adjustment of the electromagnetic straightening parameters. This not only improves the response speed of the straightening process and reduces the number of adjustments required to achieve the target hardness, but also enhances the stability and efficiency of the entire straightening process.

[0119] In practical applications, these two formulas can be adjusted according to the specific characteristics of the copper strip material and production requirements. For example, they can be determined using experimental data or empirical values. , , and The specific values ​​for these feedforward gain coefficients may vary depending on the specifications of the copper strip or the type of surface plating.

[0120] This feedforward control method can be combined with the previously mentioned PID control method. Feedforward control provides rapid initial adjustments, while PID control allows for fine-tuning subsequent adjustments. This combination can further improve the accuracy and efficiency of the straightening process.

[0121] As a preferred implementation, an adaptive mechanism can be set up to dynamically adjust these feedforward gain coefficients. For example, it can be continuously optimized based on historical data and real-time feedback. , , and The value of allows the system to better adapt to different production conditions and material properties.

[0122] Furthermore, step S57 includes:

[0123] S571: Calculate the final current intensity for straightening the copper strip based on the first feedforward term and the adjusted current intensity: ;

[0124] S572: Calculate the final current frequency for straightening the copper strip based on the second feedforward term and the adjusted current frequency. ;

[0125] S572: straightening the red 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.

[0126] The technical solution of the present application combines feedforward control with feedback control through specific calculation steps, achieving precise regulation of current intensity and current frequency during the straightening process of the red copper strip. Specifically, by adding the first feedforward term to the adjusted current intensity , the final current intensity is obtained. This method takes into account the adjustment results based on feedback control and introduces predictive compensation of feedforward control, which helps to respond more quickly and accurately to system changes.

[0127] Similarly, by adding the second feedforward term to the adjusted current frequency , the final current frequency is obtained. This combination of feedback and feedforward control can better adapt to the straightening needs under different working conditions.

[0128] Finally, the red copper strip is straightened using the calculated final current intensity and final current frequency. The innovation of this method lies in its use of the accuracy of feedback control and its improvement of the response speed and anti-interference ability of the system through feedforward control. Through this compound control strategy, the strip hardness value can be more effectively controlled within the allowable deviation range of the preset target hardness value.

[0129] In some embodiments of the present application described above, the red copper strip is straightened using electromagnetic straightening parameters, and the strip hardness value at the strip outlet is detected in real time to control the hardness of the red copper strip. However, in this process, a single strip hardness value may not fully reflect the hardness distribution of the red copper strip in the width direction. The hardness of the red copper strip in the width direction may not be uniform, which may cause problems in subsequent processing and affect product quality. Therefore, a more comprehensive and accurate method is needed to evaluate and control the hardness of the red copper strip.

[0130] Therefore, to solve this problem, further, step S3 includes:

[0131] S31: straightening the red copper strip using electromagnetic straightening parameters, and detecting the hardness values of multiple detection points in the width direction at the strip outlet;

[0132] S33: calculating the transverse hardness average value according to the hardness values of the multiple detection points, the transverse hardness average value being the strip hardness value at the strip outlet.

[0133] Specifically, the hardness values of multiple detection points in the width direction are detected at the exit port. This multi-point detection method can comprehensively reflect the hardness distribution of the red copper strip in the width direction, and help to find possible hardness unevenness problems.

[0134] By calculating the average of the hardness values of these multiple detection points, a more representative exit hardness value is obtained. This transverse hardness average serves as the exit hardness value of the red copper strip at the exit port, providing a more accurate and comprehensive data basis for subsequent hardness control processes.

[0135] This technical solution solves the defect that single-point hardness detection may overlook the unevenness of the hardness distribution in the width direction. Through multi-point detection and average calculation, not only the overall hardness condition of the red copper strip can be more accurately reflected, but also the hardness uniformity can be indirectly reflected, improving the quality stability of the red copper strip and meeting the high-precision processing requirements.

[0136] In a second aspect, a control device for red copper strip stretch-bend-straightening, which runs a control method for red copper strip stretch-bend-straightening according to any one of the above, the device comprising:

[0137] The acquisition module 201 acquires batch information of the red copper strip to be straightened and a preset target hardness value, and the batch information at least includes the specification and surface plating type of the red copper strip.

[0138] The calling module 202 calls the electromagnetic straightening parameters matched with the specification and surface plating type of the red copper strip from the preset parameter library according to the batch information.

[0139] The straightening detection module 203 straightens the red copper strip by using the electromagnetic straightening parameters, and detects the exit hardness value of the red copper strip at the exit port in real time.

[0140] The calculation module 204 calculates the deviation between the exit hardness value and the preset target hardness value, and calculates the electromagnetic straightening parameter adjustment amount according to the deviation when the preset allowable deviation is exceeded.

[0141] The straightening adjustment module 205 adjusts the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount, and straightens the red copper strip by using the adjusted electromagnetic straightening parameters, so that the deviation between the final exit hardness value and the preset target hardness value is less than or equal to the preset allowable deviation.

[0142] The control device proposed in this application realizes automatic control in the process of red copper strip stretch-bending straightening through modular design. The acquisition module 201 is responsible for acquiring 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, ensuring the applicability of the initial straightening parameters. The straightening detection module 203 performs the actual straightening operation and monitors the strip 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 the basis for 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 the goal of precise hardness control.

[0143] An important advantage of this modular design is its flexibility and scalability. For example, the acquisition module 201 can acquire batch information in various ways, such as manual input, barcode scanning, or interfacing with a production management system. The calling module 202 can be connected to a constantly updated parameter library to accommodate new material specifications or plating types. The straightening detection module 203 can integrate various types of hardness detection sensors to meet different measurement needs.

[0144] Among them, the calculation module 204 can use various algorithms to calculate the electromagnetic straightening parameter adjustment amount. For example, PID (Proportional-Integral-Derivative) control-based algorithms can be used, or more complex machine learning algorithms such as neural networks or fuzzy logic control can be used. This flexibility allows the device to be optimized according to different production needs and material characteristics.

[0145] The design of the straightening adjustment module 205 can also have multiple implementations. 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, this module can also contain safety mechanisms, such as automatically stopping the straightening process when the parameters exceed the preset range, to prevent damage to the red copper strip.

[0146] The coordinated work between these modules enables the entire control process to be automated and efficient. 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 traditional fixed parameter control methods.

[0147] The control device of the present application realizes precise control of hardness in the red copper strip stretch-bend straightening process by converting complex control algorithms into executable hardware modules. 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 error, and ensures the consistency of product quality.

[0148] Please refer to Figure 3 , Figure 3 A structural schematic diagram of an electronic device provided by an embodiment of the present application, the present application provides an electronic device 3, comprising: 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 mechanism (not marked), the memory 302 stores computer readable instructions executable by the processor 301, when the electronic device runs, the processor 301 executes the computer readable instructions to execute the method in any optional implementation manner of the above-mentioned embodiments, to realize the following functions: obtaining batch information of a red copper strip to be straightened and a preset target hardness value, the batch information at least includes the specification and surface plating type of the red copper strip; according to the batch information, calling the electromagnetic straightening parameters matched with the specification and surface plating type of the red copper strip from the preset parameter library; straightening the red copper strip by using the electromagnetic straightening parameters, and detecting the strip hardness value at the strip outlet in real time; calculating the deviation between the strip hardness value and the preset target hardness value, when the preset allowable deviation is exceeded, constructing a red copper strip hardness control mathematical model according to the deviation; adjusting the electromagnetic straightening parameters according to the red copper strip hardness control mathematical model, and straightening the red copper strip 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.

[0149] The present application provides a computer readable storage medium, which stores a computer program, when the computer program is executed by a processor, the method in any optional implementation manner of the above-mentioned embodiments is executed, to realize the following functions: obtaining batch information of a red copper strip to be straightened and a preset target hardness value, the batch information at least includes the specification and surface plating type of the red copper strip; according to the batch information, calling the electromagnetic straightening parameters matched with the specification and surface plating type of the red copper strip from the preset parameter library; straightening the red copper strip by using the electromagnetic straightening parameters, and detecting the strip hardness value at the strip outlet in real time; calculating the deviation between the strip hardness value and the preset target hardness value, when the preset allowable deviation is exceeded, constructing a red copper strip hardness control mathematical model according to the deviation; adjusting the electromagnetic straightening parameters according to the red copper strip hardness control mathematical model, and straightening the red copper strip 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.

[0150] In the embodiments of the present application, it should be understood that the disclosed apparatus and method can be implemented in other manners. The embodiments described above are merely exemplary, for example, the division of the units is only a logical function division, and there can be another division manner in actual implementation; for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0151] In addition, the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. In actual implementation, some or all of the units can be selected according to the actual needs to achieve the purposes of the embodiments of the present application.

[0152] In addition, each functional module in each embodiment of the present application can be integrated together to form a separate part, or each module can exist independently, or two or more modules can be integrated to form a separate part.

[0153] In this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations.

[0154] The above only describes the embodiments of the present application, and is not used to limit the protection scope of the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for controlling the bending and straightening of copper strip, characterized in that, The method is applied in a copper strip bending and straightening device, wherein the bending and straightening device is equipped with a non-contact electromagnetic induction device consisting of multiple electromagnetic coils along the direction of movement of the copper strip, and hardness detection sensors are respectively installed at the inlet and outlet of the non-contact electromagnetic induction device; the method includes the following steps: S1: Obtain the batch information and preset target hardness value of the copper strip to be straightened. The batch information includes at least the specifications and surface coating type of the copper strip. S2: Based on the batch information, retrieve electromagnetic straightening parameters from the preset parameter library that match the specifications and surface plating type of the copper strip; S3: The copper strip is straightened using the electromagnetic straightening parameters, and the hardness value of the copper strip at the exit point is detected in real time. S4: Calculate the deviation between the output belt hardness value and the preset target hardness value. When the deviation exceeds the preset allowable deviation, calculate the adjustment amount of the electromagnetic straightening parameters based on the deviation. The electromagnetic straightening parameters include at least current intensity and current frequency; Step S4 includes: S41: Calculate the deviation between the strip hardness value and the preset target hardness value. ,in, To preset the target hardness value, Let be the hardness value of the strip at time t. The deviation is mentioned above; S42: The electromagnetic straightening parameter adjustment amount calculated based on the aforementioned deviation shall include at least the following: Calculate the current intensity adjustment: ,in, Let be the adjustment amount of the current intensity at time t. For adjustment proportional gain, To adjust Integral gain, The integral term represents the deviation over time. The cumulative total Let represent the deviation value at any time τ, where time τ is an integral variable. To adjust The differential gain, Let be the differential term, representing the rate of change of the deviation with time t, where t is the current time. Calculate the current frequency adjustment amount: ,in, Let be the current frequency adjustment amount at time t. For adjustment proportional gain, For adjustment Integral gain, For adjustment The differential gain; S5: Adjust the electromagnetic straightening parameters according to the adjustment amount of the electromagnetic straightening parameters, 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.

2. The method for controlling the bending and straightening of copper strip according to claim 1, characterized in that, Step S5 includes: S51: Update the current intensity based on the current intensity adjustment amount: ,in, The adjusted current intensity; S52: Update the current frequency based on the current frequency adjustment amount. ,in, The adjusted current frequency; S53: The copper strip is straightened 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.

3. The method for controlling the bending and straightening of copper strip according to claim 2, characterized in that, Step S53 includes: S54: Adjust the electromagnetic straightening parameters according to the electromagnetic straightening parameter adjustment amount, and obtain the entry hardness value of the copper strip at the inlet and the conveying speed of the copper strip. S55: Calculate the first feedforward term of the current intensity and the second feedforward term of the current frequency based on the input belt hardness value and the conveying speed, respectively. S56: The copper strip is straightened according to the first feedforward term, the second feedforward term, 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.

4. The method for controlling the bending and straightening of copper strip according to claim 3, characterized in that, Step S56 includes: S561: The formula for calculating the first feedforward term based on the input belt hardness value and the conveying speed is as follows: ;in, As the first feedforward term, The current intensity feedforward gain is speed-related and is used to adjust the current intensity compensation required due to changes in the copper strip conveying speed. The current intensity feedforward gain is related to the input band hardness value and is used to pre-adjust the current intensity according to the input band hardness value. For conveying speed; This refers to the hardness value of the input strip; S562: The formula for calculating the second feedforward term based on the input belt hardness value and the conveying speed is as follows: ;in, For the second feedforward term, The current frequency feedforward gain is speed-related and is used to adjust the frequency compensation required due to changes in the copper strip conveying speed. This is a current frequency feedforward gain related to the input band hardness value, used to pre-adjust the current frequency according to the input band hardness value.

5. The method for controlling the bending and straightening of copper strip according to claim 4, characterized in that, Step S57 includes: S571: Calculate the final current intensity for straightening the copper strip based on the first feedforward term and the adjusted current intensity: ; S572: Calculate the final current frequency for straightening the copper strip based on the second feedforward term and the adjusted current frequency: ; S573: The copper strip is straightened 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.

6. The method for controlling the bending and straightening of copper strip according to claim 1, characterized in that, Step S3 includes: S31: The copper strip is straightened using the electromagnetic straightening parameters, and the hardness values ​​of the copper strip at multiple detection points in the width direction at the exit of the strip are detected. S33: Calculate the average transverse hardness based on the hardness values ​​of the multiple detection points. The average transverse hardness is the exit hardness value of the copper strip at the exit point.

7. A control device for straightening and bending copper strips, characterized in that, The apparatus for controlling the bending and straightening of a copper strip as described in any one of claims 1-6 includes: Acquisition module: Acquires batch information and preset target hardness value of the copper strip to be straightened. The batch information includes at least the specifications and surface plating type of the copper strip. Calling module: Based on the batch information, call electromagnetic straightening parameters that match the specifications and surface plating type of the copper strip from the preset parameter library; Straightening and detection module: The copper strip is straightened using the electromagnetic straightening parameters, and the hardness value of the copper strip at the exit point is detected in real time. Calculation module: Calculates the deviation between the output belt hardness value and the preset target hardness value. When the deviation exceeds the preset allowable deviation, it calculates the adjustment amount of the electromagnetic straightening parameters based on the deviation. Straightening adjustment module: Adjusts the electromagnetic straightening parameters according to the adjustment amount of the electromagnetic straightening parameters, 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.

8. An electronic device, characterized in that, It includes a processor and a memory, the memory storing computer-readable instructions that, when executed by the processor, perform the steps of the method as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it performs the steps of the method as described in any one of claims 1-6.

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