Method, device and equipment for obtaining process parameters of induction heating of support rollers

Abstract

The present invention provides a method, device and equipment for obtaining process parameters of induction heating of a support roller, and relates to the technical field of induction heating simulation. The method comprises: obtaining an input voltage value, performing an electromagnetic-magnetic-thermal three-field coupling simulation according to the input voltage value, and obtaining a simulation result; obtaining a target resonant capacitance according to the simulation result, and performing simulation again to obtain a curve of apparent power changing with time; and judging whether the apparent power is constant; if it is not constant, re-obtaining the input voltage value and performing simulation; if it is constant, performing an electromagnetic-magnetic-thermal three-field coupling simulation on the target voltage value to obtain a surface temperature-time curve of the middle part of the roller body, and obtaining the heating power, performing an electromagnetic-magnetic-thermal three-field coupling simulation again, obtaining a surface temperature-time curve of the end of the roller body, and then obtaining the end compensation capacitance / inductance. The present invention realizes obtaining the process parameters of induction heating of the support roller, and assists in realizing the process design of the induction heating process of the support roller.

Description

Technical Field

[0001] The present invention relates to the technical field of induction heating simulation, and in particular to a method, device, equipment and storage medium for acquiring process parameters of induction heating of a support roller. Background Art

[0002] The progress of modern rolling technology has put forward higher requirements on the performance of support rollers, especially in the manufacturing process, the application of overall induction hardening process is particularly important. This process can not only improve the hardness and wear resistance of the support rollers, but also effectively increase their service life. Therefore, induction hardening will become a new development direction of support roller manufacturing technology. It should be noted that the induction hardening process involves the coupling of electric, magnetic and thermal fields, which greatly increases the complexity and risk of its process design.

[0003] At present, induction heating simulation technology has been widely used in the induction heating research and engineering practice of various workpieces. However, due to the large size of the support roller, the required induction heating equipment is relatively complex. Therefore, when formulating the induction heating process of the support roller, it is necessary to consider parameters such as heating power, resonant capacitance and end compensation capacitance. In the heating process of steel materials, due to the complex change trend, it is usually impossible to accurately predict the relevant parameters. Summary of the invention

[0004] The problem solved by the present invention is how to obtain the induction heating parameters of the support roller to assist in realizing the induction heating process of the support roller.

[0005] In order to solve the above problems, the present invention provides a method, device, electronic equipment and storage medium for obtaining process parameters of induction heating of a support roller.

[0006] In a first aspect, the present invention provides a method for obtaining process parameters of an induction heating support roller, comprising:

[0007] Acquire the input voltage value of the support roller, perform electric-magnetic-thermal three-field coupling simulation according to the input voltage value, and obtain the simulation result;

[0008] The target resonant capacitance is obtained according to the simulation results, and the simulation is performed again to obtain a curve of apparent power changing with time;

[0009] Determining whether the apparent power is constant according to a curve showing the apparent power changing with time;

[0010] If the apparent power is not constant, reacquire the input voltage value and perform simulation until the apparent power is constant;

[0011] If the apparent power is constant, a target voltage value is obtained according to the apparent power, and the target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve of the middle surface of the roller body, and the heating power is obtained according to the temperature-time curve. Based on the heating power, an electric-magnetic-thermal three-field coupling simulation is performed again to obtain a temperature-time curve of the end surface of the roller body, and the end compensation capacitance / inductance is obtained according to the temperature-time curve of the end surface of the roller body.

[0012] Optionally, the acquiring of the input voltage value, and performing electric-magnetic-thermal three-field coupling simulation according to the input voltage value to obtain a simulation result, includes:

[0013] Obtaining a multiple relationship between DC data and AC data before and after inversion, wherein the DC data includes DC voltage, DC current and DC power, and the AC data includes AC effective voltage, AC current and AC power;

[0014] According to the multiple relationship, the initial apparent power is obtained;

[0015] Obtaining the input voltage value according to the initial apparent power;

[0016] The electric-magnetic-thermal three-field coupling simulation is performed according to the input voltage value to obtain a simulation result.

[0017] Optionally, obtaining a target resonant capacitor according to a simulation result, and performing simulation again to obtain a curve of apparent power changing with time, includes:

[0018] The target resonant capacitance is obtained according to the simulation results through the resonant capacitance relationship, wherein the resonant capacitance relationship is as follows:

[0019]

[0020] Among them, f r_new is the resonant frequency, L eq is the equivalent inductance, C is the target resonant capacitance;

[0021] The target resonant capacitor is used to replace the original resonant capacitor, and the electric-magnetic-thermal three-field coupling simulation is performed again to obtain a curve of apparent power changing with time.

[0022] Optionally, judging whether the apparent power is constant according to a curve of the apparent power changing with time; if the apparent power is not constant, reacquiring the input voltage value and performing simulation until the apparent power is constant, includes:

[0023] According to the curve of apparent power varying with time, curves of effective voltage, effective current and apparent power varying with time are obtained;

[0024] The curves of the effective voltage, effective current and apparent power changing with time are processed by the instantaneous impedance formula to obtain multiple instantaneous impedances, wherein the instantaneous impedance formula is as follows:

[0025]

[0026] Wherein, Z(t) is the instantaneous impedance at time t, V(t) is the voltage at time t, and I(t) is the current at time t;

[0027] Plotting a plurality of the instantaneous impedance values ​​to obtain a curve of impedance variation over time;

[0028] Judging whether the apparent power is constant according to a curve of the impedance changing with time;

[0029] If the apparent power is not constant, the input voltage value is recovered by using a voltage improvement formula, wherein the voltage improvement formula is as follows:

[0030]

[0031] Among them, V n (n=1,2,3...) is the input voltage value after the nth change, P is the target apparent power, V n-1 is the input voltage value before the change, I n-1 To calculate the current.

[0032] Optionally, obtaining a target voltage value according to the apparent power includes:

[0033] Acquire a preset induction heating process, and obtain apparent power values ​​of multiple stages according to the preset induction heating process and the apparent power;

[0034] The target voltage value is obtained according to the apparent power values ​​in the multiple stages.

[0035] Optionally, the target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve, and according to the temperature-time curve, the induction heating power of the support roller that meets the temperature requirement of the support roller is obtained through one or more electric-magnetic-thermal three-field coupling simulations, including:

[0036] The target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve corresponding to the surface position of the middle part of the roller body of the support roller;

[0037] Determine whether the temperature-time curve corresponding to the middle surface position of the roller body meets the preset temperature difference requirement;

[0038] If the surface position of the middle part of the roller body meets the preset temperature difference requirement, the heating power in the induction heating process parameters of the support roller is obtained;

[0039] If the surface position of the middle part of the roller body does not meet the preset temperature difference requirement, the power input value is changed to perform the electric-magnetic-thermal three-field coupling simulation again, and the end compensation capacitance is obtained according to the temperature-time curve, and the support roller induction heating parameters are obtained according to the end compensation capacitance until the temperature-time curve meets the preset temperature difference requirement.

[0040] Optionally, if the surface position of the middle part of the roller body does not meet the preset temperature difference requirement, the power input value is changed to perform the electric-magnetic-thermal three-field coupling simulation again, and the end compensation capacitance is obtained according to the temperature-time curve, and the support roller induction heating parameter is obtained according to the end compensation capacitance until the temperature-time curve meets the preset temperature difference requirement, including:

[0041] According to the temperature-time curve corresponding to the middle surface position of the roller body, the end temperature and the center point temperature are obtained;

[0042] When the end temperature is lower than the center temperature, the end capacitance compensation is obtained by a capacitance compensation formula, wherein the capacitance compensation formula is as follows:

[0043] C=(△T×a),

[0044] Wherein, C is the end capacitance compensation, ΔT is the difference between the end temperature and the center point temperature, and a is a constant;

[0045] When the end temperature is higher than or equal to the center temperature, the end inductance compensation is obtained by an inductance compensation formula, wherein the inductance compensation formula is as follows:

[0046] L=(△T×b%),

[0047] Wherein, L is the end inductance compensation, ΔT is the difference between the end temperature and the center point temperature, and b is a constant;

[0048] According to the end compensation capacitor or the end compensation inductor, the capacitance value or the inductance value originally input in the electric-magnetic-thermal three-field coupling simulation is replaced, and end compensation capacitor circuit components or end compensation inductor circuit components are added and end compensation capacitor parameter attributes or end compensation inductor parameter attributes are assigned;

[0049] According to the end compensation capacitor or the end compensation inductor, the end compensation capacitor circuit components or the end compensation inductor circuit components and the end compensation capacitor parameter attributes or the end compensation inductor parameter attributes, the simulation is performed again to obtain the temperature-time curve corresponding to the middle position and the end surface position of the roller body;

[0050] Until the preset temperature difference meets the requirement of the preset temperature difference range, the induction heating parameters of the support roller are obtained.

[0051] In a second aspect, the present invention provides a device for acquiring process parameters of an induction heating support roller, comprising:

[0052] An acquisition unit is used to acquire an input voltage value of the support roller, and perform an electric-magnetic-thermal three-field coupling simulation according to the input voltage value to obtain a simulation result;

[0053] A training unit, used for obtaining a target resonant capacitance according to a simulation result, and performing simulation again to obtain a curve of apparent power changing with time;

[0054] A judging unit, configured to judge whether the apparent power is constant according to a curve showing the apparent power changing with time;

[0055] A processing unit, configured to reacquire the input voltage value if the apparent power is not constant, and perform simulation until the apparent power becomes constant;

[0056] The processing unit is further used for obtaining a target voltage value according to the apparent power if the apparent power is constant, performing the electric-magnetic-thermal three-field coupling simulation on the target voltage value to obtain a temperature-time curve of the middle surface of the roller body, obtaining the heating power according to the temperature-time curve, performing the electric-magnetic-thermal three-field coupling simulation again based on the heating power to obtain a temperature-time curve of the end surface of the roller body, and obtaining the end compensation capacitance / inductance according to the temperature-time curve of the end surface of the roller body.

[0057] In a third aspect, the present invention provides an electronic device, including a memory and a processor;

[0058] The memory is used to store computer programs;

[0059] The processor is used to implement the method for acquiring the process parameters of induction heating of the support roller as described in the first aspect when executing the computer program.

[0060] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the method for acquiring process parameters of induction heating of a support roller as described in the first aspect is implemented.

[0061] The beneficial effects of the support roller induction heating process parameter acquisition method, device, electronic device and storage medium of the present invention are as follows: the support roller induction heating process parameter acquisition method of the present invention first needs to determine the initial input voltage value as the input parameter of the subsequent electric-magnetic-thermal three-field coupling simulation; use the initial input voltage value to perform electric-magnetic-thermal three-field coupling simulation to obtain the simulation result; obtain the target resonant capacitance according to the simulation result, and simulate again to obtain the curve of apparent power changing with time; judge whether the apparent power is constant according to the curve of apparent power changing with time, and the constancy of apparent power can reflect the stability in the induction heating process; if it is found that the apparent power is not constant, it is necessary to re-acquire the input voltage value and perform simulation until the apparent power is constant; when the apparent power is stable, the target voltage value can be obtained according to the obtained apparent power value; input the target voltage value into the electric-magnetic-thermal three-field coupling simulation to obtain the temperature-time curve; then obtain the end compensation capacitance according to the temperature-time curve to provide a basis for the compensation required for the uniform temperature distribution in the entire support roller; obtain the parameters of the support roller induction heating according to the end compensation capacitance. The present invention achieves the stability of apparent power by adjusting voltage and capacitance or inductance parameters, thereby obtaining suitable induction heating parameters, thereby assisting in the induction heating process of the support roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 A schematic flow chart of a method for acquiring process parameters of induction heating of a support roller according to an embodiment of the present invention;

[0063] Figure 2 It is a structural schematic diagram of a device for acquiring process parameters of induction heating of a support roller according to an embodiment of the present invention;

[0064] Figure 3 The figure is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0065] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0066] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0067] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0068] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0069] The names of the messages or information exchanged between multiple devices in the embodiments of the present invention are only used for illustrative purposes, and are not used to limit the scope of these messages or information.

[0070] like Figure 1 As shown, a method for obtaining process parameters of induction heating of a support roller provided by an embodiment of the present invention includes:

[0071] Step S1, obtaining an input voltage value of the support roller, and performing an electric-magnetic-thermal three-field coupling simulation according to the input voltage value to obtain a simulation result;

[0072] Specifically, this embodiment first performs simulation by inputting a voltage value to provide a data basis for subsequent multiple simulations.

[0073] Step S2, obtaining a target resonant capacitor according to the simulation result, and performing simulation again to obtain a curve of apparent power changing with time;

[0074] Specifically, according to the obtained target resonant capacitance, the simulation is re-performed to obtain a change curve that is closer to the actual situation, providing basic curve data for subsequent corrections.

[0075] Step S3, judging whether the apparent power is constant according to the curve of the apparent power changing with time;

[0076] Step S4, if the apparent power is not constant, reacquire the input voltage value and perform simulation until the apparent power is constant;

[0077] Specifically, this embodiment can realize dynamic adjustment of apparent power through continuous monitoring and feedback of induction heating simulation results, ensuring that the apparent power can be stably maintained constant during the induction heating process. This embodiment can monitor the change of apparent power during the induction heating process in real time based on the curve of apparent power changing with time; if the apparent power is not constant, the input voltage value can be timely re-acquired and simulated until the apparent power is constant. The real-time feedback adjustment of this embodiment can ensure the power stability during the induction heating process; through continuous monitoring and adjustment, the stability of the equipment during the induction heating process can be improved, ensuring the reliability and consistency of the heating process; the instability of apparent power may cause uneven heating of the material or quality loss. By dynamically adjusting the apparent power, the quality risk during the induction heating process can be reduced; it effectively assists the stable power output of the support roller during the induction heating process to ensure the heating quality and safety.

[0078] Step S5: if the apparent power is constant, a target voltage value is obtained according to the apparent power, the target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve of the middle surface of the roller body, the heating power is obtained according to the temperature-time curve, and based on the heating power, the electric-magnetic-thermal three-field coupling simulation is performed again to obtain a temperature-time curve of the end surface of the roller body, and the end compensation capacitance / inductance is obtained according to the temperature-time curve of the end surface of the roller body.

[0079] Specifically, by determining the target voltage value according to the obtained apparent power and adjusting the input voltage according to actual needs, precise control of the induction heating system can be achieved, thereby obtaining a stable heating state; the temperature-time curve is obtained through the electric-magnetic-thermal three-field coupling simulation, so that the temperature change of the support roller during the entire heating process can be fully understood, which is helpful to improve the control of the temperature distribution of the support roller; the end compensation capacitor is obtained according to the temperature-time curve, which ensures uniform heating of the entire support roller area and improves the heating efficiency and product quality; the induction heating parameters of the support roller are obtained through the end compensation capacitor, which is more in line with the requirements of the specific heating process, realizes precise control and optimization of the induction heating process of the support roller, and improves the heating efficiency and quality.

[0080] The method for acquiring the process parameters of induction heating of the support roller in this embodiment first needs to determine the initial input voltage value, which is the input parameter of the subsequent electric-magnetic-thermal three-field coupling simulation; use the initial input voltage value to perform the electric-magnetic-thermal three-field coupling simulation to obtain the simulation result; obtain the target resonant capacitance according to the simulation result, and simulate again to obtain the curve of the apparent power changing with time; judge whether the apparent power is constant according to the curve of the apparent power changing with time, and the constancy of the apparent power can reflect the stability in the induction heating process; if it is found that the apparent power is not constant, it is necessary to re-acquire the input voltage value and perform the simulation until the apparent power is constant; when the apparent power is stable, the target voltage value can be obtained according to the obtained apparent power value; input the target voltage value into the electric-magnetic-thermal three-field coupling simulation to obtain the temperature-time curve; then obtain the end compensation capacitance according to the temperature-time curve to provide a basis for the compensation required for the uniform temperature distribution in the entire support roller; obtain the parameters of the induction heating of the support roller according to the end compensation capacitance. This embodiment achieves the stability of apparent power by adjusting the voltage and capacitance or inductance parameters, thereby obtaining suitable induction heating parameters, thereby assisting in the induction heating process of the support roller.

[0081] Optionally, the acquiring of the input voltage value, and performing electric-magnetic-thermal three-field coupling simulation according to the input voltage value to obtain a simulation result, includes:

[0082] Obtaining a multiple relationship between DC data and AC data before and after inversion, wherein the DC data includes DC voltage, DC current and DC power, and the AC data includes AC effective voltage, AC current and AC power;

[0083] According to the multiple relationship, the initial apparent power is obtained;

[0084] Obtaining the input voltage value according to the initial apparent power;

[0085] The electric-magnetic-thermal three-field coupling simulation is performed according to the input voltage value to obtain a simulation result.

[0086] Specifically, determine the relationship between the DC voltage, current and power before and after inversion and the AC effective voltage, current and power. The voltage, current and power that can be monitored by the induction heating equipment are the DC voltage, current and power before inversion, while the voltage, current and power of the simulation input are the AC voltage, current and power after inversion. There is a multiple relationship between the two, and the multiple value needs to be determined according to the equipment conditions. Determine the initial apparent power P according to the process design needs of the large support roller, through The corresponding input voltage value V is calculated.

[0087] Specifically, inversion refers to the process of converting direct current (DC) into alternating current (AC). This process is usually achieved through an inverter, which converts the input of DC voltage and current into the output of AC voltage and current to drive the induction heating equipment.

[0088] Optionally, obtaining a target resonant capacitor according to a simulation result, and performing simulation again to obtain a curve of apparent power changing with time, includes:

[0089] The target resonant capacitance is obtained according to the simulation results through the resonant capacitance relationship, wherein the resonant capacitance relationship is as follows:

[0090]

[0091] Among them, f r_new is the resonant frequency, L eq is the equivalent inductance, C is the target resonant capacitance;

[0092] The target resonant capacitor is used to replace the original resonant capacitor, and the electric-magnetic-thermal three-field coupling simulation is performed again to obtain a curve of apparent power changing with time.

[0093] Optionally, judging whether the apparent power is constant according to a curve of the apparent power changing with time; if the apparent power is not constant, reacquiring the input voltage value and performing simulation until the apparent power is constant, includes:

[0094] According to the curve of apparent power varying with time, curves of effective voltage, effective current and apparent power varying with time are obtained;

[0095] The curves of the effective voltage, effective current and apparent power changing with time are processed by the instantaneous impedance formula to obtain multiple instantaneous impedances, wherein the instantaneous impedance formula is as follows:

[0096]

[0097] Wherein, Z(t) is the instantaneous impedance at time t, V(t) is the voltage at time t, and I(t) is the current at time t;

[0098] Plotting a plurality of the instantaneous impedance values ​​to obtain a curve of impedance variation over time;

[0099] Judging whether the apparent power is constant according to a curve of the impedance changing with time;

[0100] If the apparent power is not constant, the input voltage value is recovered by using a voltage improvement formula, wherein the voltage improvement formula is as follows:

[0101]

[0102] Among them, V n (n=1,2,3...) is the input voltage value after the nth change, P is the target apparent power, V n-1 is the input voltage value before the change, I n-1 To calculate the current.

[0103] Specifically, in actual application, the curves of the effective voltage, effective current and apparent power changing with time in this embodiment can be obtained based on the curve of the apparent power changing with time, or can be directly obtained simultaneously with the curve of the apparent power changing with time. The specific acquisition method can be set according to actual needs.

[0104] Optionally, obtaining a target voltage value according to the apparent power includes:

[0105] Acquire a preset induction heating process, and obtain apparent power values ​​of multiple stages according to the preset induction heating process and the apparent power;

[0106] The target voltage value is obtained according to the apparent power values ​​in the multiple stages.

[0107] Specifically, in actual application, a constant power can be given for the first stage, and the power value of the second stage is 67% of the power value of the first stage, the power value of the third stage should be 67% of the power value of the second stage, and the power value of the fourth stage is 67% of the power value of the third stage. A four-stage heating process is set, that is, a preset induction heating ratio is obtained, and multiple stage apparent power values ​​are obtained according to the preset induction heating ratio and the apparent power, and then the target voltage value is obtained according to the multiple stage apparent power values. It can be understood that the specific number of stages is set according to actual conditions.

[0108] Optionally, the target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve, and according to the temperature-time curve, the induction heating power of the support roller that meets the temperature requirement of the support roller is obtained through one or more electric-magnetic-thermal three-field coupling simulations, including:

[0109] The target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve corresponding to the surface position of the middle part of the roller body of the support roller;

[0110] Determine whether the temperature-time curve corresponding to the middle surface position of the roller body meets the preset temperature difference requirement;

[0111] If the surface position of the middle part of the roller body meets the preset temperature difference requirement, the heating power in the induction heating process parameters of the support roller is obtained;

[0112] If the surface position of the middle part of the roller body does not meet the preset temperature difference requirement, the power input value is changed to perform the electric-magnetic-thermal three-field coupling simulation again, and the end compensation capacitance is obtained according to the temperature-time curve, and the support roller induction heating parameters are obtained according to the end compensation capacitance until the temperature-time curve meets the preset temperature difference requirement.

[0113] Specifically, by judging whether the temperature-time curves corresponding to the middle position and the end surface position of the roller body meet the preset temperature difference requirements, the temperature distribution of the support roller during the heating process can be objectively evaluated; according to the judgment result, if the preset temperature difference requirements are met, the induction heating parameters of the support roller are directly obtained; if the requirements are not met, the end compensation capacitor can be automatically adjusted to achieve the expected temperature distribution requirements; by analyzing and adjusting the temperature-time curve, the support roller can achieve a more consistent and stable temperature distribution during the heating process, and the consistency and stability of the heating can be improved; the end compensation capacitor is adjusted according to the real-time temperature-time curve, so as to optimize the heating parameters of the support roller, which helps to improve the efficiency and quality of heating.

[0114] Optionally, if the surface position of the middle part of the roller body does not meet the preset temperature difference requirement, the power input value is changed to perform the electric-magnetic-thermal three-field coupling simulation again, and the end compensation capacitance is obtained according to the temperature-time curve, and the support roller induction heating parameter is obtained according to the end compensation capacitance until the temperature-time curve meets the preset temperature difference requirement, including:

[0115] According to the temperature-time curve corresponding to the middle surface position of the roller body, the end temperature and the center point temperature are obtained;

[0116] When the end temperature is lower than the center temperature, the end capacitance compensation is obtained by a capacitance compensation formula, wherein the capacitance compensation formula is as follows:

[0117] C=(△T×a),

[0118] Wherein, C is the end capacitance compensation, ΔT is the difference between the end temperature and the center point temperature, and a is a constant;

[0119] When the end temperature is higher than or equal to the center temperature, the end inductance compensation is obtained by an inductance compensation formula, wherein the inductance compensation formula is as follows:

[0120] L=(△T×b%),

[0121] Wherein, L is the end inductance compensation, ΔT is the difference between the end temperature and the center point temperature, and b is a constant;

[0122] According to the end compensation capacitor or the end compensation inductor, the capacitance value or the inductance value originally input in the electric-magnetic-thermal three-field coupling simulation is replaced, and end compensation capacitor circuit components or end compensation inductor circuit components are added and end compensation capacitor parameter attributes or end compensation inductor parameter attributes are assigned;

[0123] According to the end compensation capacitor or the end compensation inductor, the end compensation capacitor circuit components or the end compensation inductor circuit components and the end compensation capacitor parameter attributes or the end compensation inductor parameter attributes, the simulation is performed again to obtain the temperature-time curve corresponding to the middle position and the end surface position of the roller body;

[0124] Until the preset temperature difference meets the requirement of the preset temperature difference range, the induction heating parameters of the support roller are obtained.

[0125] Specifically, this embodiment obtains the end temperature and the center point temperature according to the temperature-time curve, and combines the difference between the end temperature and the center point temperature, obtains the end compensation capacitor or inductance compensation through the capacitance compensation formula or the inductance compensation formula, realizes adaptive adjustment of compensation, and thus ensures the uniformity of roller body heating; by replacing the capacitance value or the inductance value, adding the end compensation capacitor or inductance circuit components and assigning the end compensation capacitor or the end compensation inductance parameter attributes, the simulation is performed again to obtain the temperature-time curve corresponding to the middle position and the end surface position of the roller body, and multiple simulation adjustments are performed to gradually optimize the heating parameters to help achieve more accurate heating process control; through continuous adaptive adjustment, the stability and consistency of the equipment during the heating process are enhanced, the heating efficiency is improved, and the product quality is ensured.

[0126] like Figure 2 As shown, an embodiment of the present invention provides a device for acquiring process parameters of an induction heating support roller, comprising:

[0127] An acquisition unit is used to acquire an input voltage value of the support roller, and perform an electric-magnetic-thermal three-field coupling simulation according to the input voltage value to obtain a simulation result;

[0128] A training unit, used for obtaining a target resonant capacitance according to a simulation result, and performing simulation again to obtain a curve of apparent power changing with time;

[0129] A judging unit, configured to judge whether the apparent power is constant according to a curve showing the apparent power changing with time;

[0130] A processing unit, configured to reacquire the input voltage value if the apparent power is not constant, and perform simulation until the apparent power becomes constant;

[0131] The processing unit is further used for obtaining a target voltage value according to the apparent power if the apparent power is constant, performing the electric-magnetic-thermal three-field coupling simulation on the target voltage value to obtain a temperature-time curve of the middle surface of the roller body, obtaining the heating power according to the temperature-time curve, performing the electric-magnetic-thermal three-field coupling simulation again based on the heating power to obtain a temperature-time curve of the end surface of the roller body, and obtaining the end compensation capacitance / inductance according to the temperature-time curve of the end surface of the roller body.

[0132] The support roller induction heating process parameter acquisition device of this embodiment is used to implement the support roller induction heating process parameter acquisition method as described above. Its advantages over the prior art are the same as the advantages of the support roller induction heating process parameter acquisition method as described above over the prior art, and will not be repeated here.

[0133] like Figure 3 As shown, an electronic device 300 provided by an embodiment of the present invention includes a memory 310 and a processor 320; the memory 310 is used to store a computer program; the processor 320 is used to implement the method for obtaining the process parameters of the induction heating of the support roller as described above when executing the computer program.

[0134] In other words, an electronic device 300 includes a memory 310 and a processor 320 coupled to the memory 310; the memory 310 is configured to store a computer program; and the processor 320 is configured to perform the following operations when executing the computer program:

[0135] Acquire the input voltage value of the support roller, perform electric-magnetic-thermal three-field coupling simulation according to the input voltage value, and obtain the simulation result;

[0136] The target resonant capacitance is obtained according to the simulation results, and the simulation is performed again to obtain a curve of apparent power changing with time;

[0137] Determining whether the apparent power is constant according to a curve showing the apparent power changing with time;

[0138] If the apparent power is not constant, reacquire the input voltage value and perform simulation until the apparent power is constant;

[0139] If the apparent power is constant, a target voltage value is obtained according to the apparent power, and the target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve of the middle surface of the roller body, and the heating power is obtained according to the temperature-time curve. Based on the heating power, an electric-magnetic-thermal three-field coupling simulation is performed again to obtain a temperature-time curve of the end surface of the roller body, and the end compensation capacitance / inductance is obtained according to the temperature-time curve of the end surface of the roller body.

[0140] An embodiment of the present invention provides a computer-readable storage medium, wherein a computer program is stored on the storage medium. When the computer program is executed by a processor, the method for acquiring process parameters of induction heating of a support roller as described above is implemented.

[0141] In other words, a non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor performs the following operations:

[0142] Acquire the input voltage value of the support roller, perform electric-magnetic-thermal three-field coupling simulation according to the input voltage value, and obtain the simulation result;

[0143] The target resonant capacitance is obtained according to the simulation results, and the simulation is performed again to obtain a curve of apparent power changing with time;

[0144] Determining whether the apparent power is constant according to a curve showing the apparent power changing with time;

[0145] If the apparent power is not constant, reacquire the input voltage value and perform simulation until the apparent power is constant;

[0146] If the apparent power is constant, a target voltage value is obtained according to the apparent power, and the target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve of the middle surface of the roller body, and the heating power is obtained according to the temperature-time curve. Based on the heating power, an electric-magnetic-thermal three-field coupling simulation is performed again to obtain a temperature-time curve of the end surface of the roller body, and the end compensation capacitance / inductance is obtained according to the temperature-time curve of the end surface of the roller body.

[0147] An electronic device 300 that can be used as a server or client of the present invention will now be described, which is an example of a hardware device that can be applied to various aspects of the present invention. The electronic device 300 is intended to represent various forms of digital electronic computer equipment, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device 300 can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples, and are not intended to limit the implementation of the present invention described and / or required herein.

[0148] The electronic device 300 includes a computing unit, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) or a computer program loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for the operation of the device can also be stored. The computing unit, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0149] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc. In the present application, the unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment of the present invention. In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0150] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A method for obtaining process parameters of induction heating of a support roller, characterized in that: include: Acquire the input voltage value of the support roller, perform electric-magnetic-thermal three-field coupling simulation according to the input voltage value, and obtain the simulation result; The target resonant capacitance is obtained according to the simulation results, and the simulation is performed again to obtain a curve of apparent power changing with time; Determining whether the apparent power is constant according to a curve showing the apparent power changing with time; If the apparent power is not constant, reacquire the input voltage value and perform simulation until the apparent power is constant; If the apparent power is constant, a target voltage value is obtained according to the apparent power, and the target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve of the middle surface of the roller body, and the heating power is obtained according to the temperature-time curve. Based on the heating power, an electric-magnetic-thermal three-field coupling simulation is performed again to obtain a temperature-time curve of the end surface of the roller body, and the end compensation capacitance / inductance is obtained according to the temperature-time curve of the end surface of the roller body.

2. The method for obtaining process parameters of induction heating of a support roller according to claim 1, characterized in that: The acquiring of the input voltage value, and performing electric-magnetic-thermal three-field coupling simulation according to the input voltage value to obtain the simulation result, include: Obtaining a multiple relationship between DC data and AC data before and after inversion, wherein the DC data includes DC voltage, DC current and DC power, and the AC data includes AC effective voltage, AC current and AC power; According to the multiple relationship, the initial apparent power is obtained; Obtaining the input voltage value according to the initial apparent power; The electric-magnetic-thermal three-field coupling simulation is performed according to the input voltage value to obtain a simulation result.

3. The method for obtaining process parameters of induction heating of a support roller according to claim 1, characterized in that: The target resonant capacitance is obtained according to the simulation results, and the simulation is performed again to obtain a curve of apparent power changing with time, including: The target resonant capacitance is obtained according to the simulation results through the resonant capacitance relationship, wherein the resonant capacitance relationship is as follows: Among them, f r_new is the resonant frequency, L eq is the equivalent inductance, C is the target resonant capacitance; The target resonant capacitor is used to replace the original resonant capacitor, and the electric-magnetic-thermal three-field coupling simulation is performed again to obtain a curve of apparent power changing with time.

4. The method for obtaining process parameters of induction heating of a support roller according to claim 1, characterized in that: The step of judging whether the apparent power is constant according to a curve of the apparent power changing with time; and if the apparent power is not constant, reacquiring the input voltage value and performing simulation until the apparent power is constant, comprises: According to the curve of apparent power varying with time, curves of effective voltage, effective current and apparent power varying with time are obtained; The curves of the effective voltage, effective current and apparent power changing with time are processed by the instantaneous impedance formula to obtain multiple instantaneous impedances, wherein the instantaneous impedance formula is as follows: Wherein, Z(t) is the instantaneous impedance at time t, V(t) is the voltage at time t, and I(t) is the current at time t; Plotting a plurality of the instantaneous impedance values ​​to obtain a curve of impedance variation over time; Judging whether the apparent power is constant according to a curve of the impedance changing with time; If the apparent power is not constant, the input voltage value is recovered by using a voltage improvement formula, wherein the voltage improvement formula is as follows: Among them, V n (n=1,2,3...) is the input voltage value after the nth change, P is the target apparent power, V n-1 is the input voltage value before the change, I n-1 To calculate the current.

5. The method for obtaining process parameters of induction heating of support rollers according to claim 1, characterized in that: The step of obtaining a target voltage value according to the apparent power comprises: Acquire a preset induction heating process, and obtain apparent power values ​​of multiple stages according to the preset induction heating process and the apparent power; The target voltage value is obtained according to the apparent power values ​​in the multiple stages.

6. The method for obtaining process parameters of induction heating of a support roller according to claim 5, characterized in that: The target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve, and according to the temperature-time curve, the induction heating power of the support roller that meets the temperature requirement of the support roller is obtained through one or more electric-magnetic-thermal three-field coupling simulations, including: The target voltage value is subjected to the electric-magnetic-thermal three-field coupling simulation to obtain a temperature-time curve corresponding to the surface position of the middle part of the roller body of the support roller; Determine whether the temperature-time curve corresponding to the middle surface position of the roller body meets the preset temperature difference requirement; If the surface position of the middle part of the roller body meets the preset temperature difference requirement, the heating power in the induction heating process parameters of the support roller is obtained; If the surface position of the middle part of the roller body does not meet the preset temperature difference requirement, the power input value is changed to perform the electric-magnetic-thermal three-field coupling simulation again, and the end compensation capacitance is obtained according to the temperature-time curve, and the support roller induction heating parameters are obtained according to the end compensation capacitance until the temperature-time curve meets the preset temperature difference requirement.

7. The method for obtaining process parameters of induction heating of a support roller according to claim 6, characterized in that: If the surface position of the middle part of the roller body does not meet the preset temperature difference requirement, the power input value is changed to perform the electric-magnetic-thermal three-field coupling simulation again, and the end compensation capacitance is obtained according to the temperature-time curve, and the support roller induction heating parameter is obtained according to the end compensation capacitance until the temperature-time curve meets the preset temperature difference requirement, including: According to the temperature-time curve corresponding to the middle surface position of the roller body, the end temperature and the center point temperature are obtained; When the end temperature is lower than the center temperature, the end capacitance compensation is obtained by a capacitance compensation formula, wherein the capacitance compensation formula is as follows: C=(△T×a), Wherein, C is the end capacitance compensation, ΔT is the difference between the end temperature and the center point temperature, and a is a constant; When the end temperature is higher than or equal to the center temperature, the end inductance compensation is obtained by an inductance compensation formula, wherein the inductance compensation formula is as follows: L=(△T×b%), Wherein, L is the end inductance compensation, ΔT is the difference between the end temperature and the center point temperature, and b is a constant; According to the end compensation capacitor or the end compensation inductor, the capacitance value or the inductance value originally input in the electric-magnetic-thermal three-field coupling simulation is replaced, and end compensation capacitor circuit components or end compensation inductor circuit components are added and end compensation capacitor parameter attributes or end compensation inductor parameter attributes are assigned; According to the end compensation capacitor or the end compensation inductor, the end compensation capacitor circuit components or the end compensation inductor circuit components and the end compensation capacitor parameter attributes or the end compensation inductor parameter attributes, the simulation is performed again to obtain the temperature-time curve corresponding to the middle position and the end surface position of the roller body; Until the preset temperature difference meets the requirement of the preset temperature difference range, the induction heating parameters of the support roller are obtained.

8. A device for acquiring process parameters of induction heating of a support roller, characterized in that: include: An acquisition unit is used to acquire an input voltage value of the support roller, and perform an electric-magnetic-thermal three-field coupling simulation according to the input voltage value to obtain a simulation result; A training unit, used for obtaining a target resonant capacitance according to a simulation result, and performing simulation again to obtain a curve of apparent power changing with time; A judging unit, configured to judge whether the apparent power is constant according to a curve showing the apparent power changing with time; a processing unit, configured to reacquire the input voltage value if the apparent power is not constant, and perform simulation until the apparent power becomes constant; The processing unit is further used for obtaining a target voltage value according to the apparent power if the apparent power is constant, performing the electric-magnetic-thermal three-field coupling simulation on the target voltage value to obtain a temperature-time curve of the middle surface of the roller body, obtaining the heating power according to the temperature-time curve, performing the electric-magnetic-thermal three-field coupling simulation again based on the heating power to obtain a temperature-time curve of the end surface of the roller body, and obtaining the end compensation capacitance / inductance according to the temperature-time curve of the end surface of the roller body.

9. An electronic device, characterized in that: including memory and processor; The memory is used to store computer programs; The processor is used to implement the method for obtaining the process parameters of induction heating of the support roller according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the method for obtaining the process parameters of induction heating of a support roller according to any one of claims 1 to 7 is implemented.

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