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Systematic identification method of electromagnetic induction heating process based on finite element model

A technology of electromagnetic induction heating and process system, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., and can solve problems such as uncontrollable and high-order finite element models

Active Publication Date: 2014-09-17
杭州四达电炉成套设备有限公司
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Problems solved by technology

Due to the coupling of various physical changes such as electromagnetic induction, eddy current heat generation, heat conduction, and thermal radiation in the electromagnetic induction heating process, it is an effective means to establish a system model of the induction heating process using the aforementioned finite element method, but the order of the finite element model is very high , cannot be directly used to control

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  • Systematic identification method of electromagnetic induction heating process based on finite element model
  • Systematic identification method of electromagnetic induction heating process based on finite element model
  • Systematic identification method of electromagnetic induction heating process based on finite element model

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Embodiment Construction

[0062] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are only used to illustrate the present invention, but not to limit the scope of the present invention.

[0063] The core idea of ​​the present invention is to use the finite element method to simulate and calculate the system response under the excitation signal, replace the experimental data with the input and output time history, and use the system identification method to obtain the response characteristic parameters and process transfer function of the system. figure 1 It is a flow chart of the method in the embodiment of the present invention.

[0064] right now figure 2 Specific identification of the electromagnetic induction heating process of a billet of a certain specification shown:

[0065] 1 Finite element modeling of continuous casting billet electromagnetic induction...

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Abstract

The invention discloses a systematic identification method of an electromagnetic induction heating process based on a finite element model. An electromagnetic induction heating finite element model of a steel blank is established by adopting ANSYS software, solution is calculated to realize simulation of the induction heating process of the steel blank, and simulation data are obtained. Experimental data are substituted by system input and output time history data provided by finite element simulation, and the system input and output time history data are processed through a least square system identification method to obtain a response characteristic parameter of the system. The advantages of finite element model establishment for induction heating are utilized, the defect that the finite element model cannot be directly used for control due to high order can be overcome, and the performance of an induction heater can be ensured when the systematic identification method is applied to design of a temperature controller for the induction heating process.

Description

technical field [0001] The invention belongs to the field of power electronics applications, and relates to a system identification method for an electromagnetic induction heating process, in particular to a system identification method for an induction heating process based on finite elements and system identification. Background technique [0002] Induction heating technology is to use electromagnetic field to generate eddy current to heat workpiece. Because of its fast heating speed, less deformation of heated parts, less pollution and low energy consumption, it is widely used in various industrial fields, including billet forging, rolling, preheating before heat treatment. hot. [0003] After literature search, Janne Nery used the finite element method to calculate the induction The temperature change of the billet in the overall direction during the heating process can obtain data that cannot be sampled in the experiment. Liu Hao from Huazhong University of Science an...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 徐哲车栩龙孔亚广何必仕薛安克
Owner 杭州四达电炉成套设备有限公司
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