Virtual temperature sampling control device and method for induction heating

A technology of induction heating and control components, applied in the field of control, can solve the problems of temperature signal anti-interference ability, damage equipment, reliable operation of equipment that affects the quality of processed products, etc., to achieve strong anti-interference ability, improve accuracy and stability Effect

Inactive Publication Date: 2015-11-11
BEIJING SNTA ENERGY SAVING ELECTRICAL
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Problems solved by technology

In the working process of induction heating, the coupling of electromagnetic field and temperature field makes the temperature acquisition and processing of the workpiece extremely complicated, and the change of temperature will affect the best state of zero current and zero voltage of the switching device of the inverter equipment, even damaged equipment
[0003] There are a variety of temperat

Method used

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  • Virtual temperature sampling control device and method for induction heating
  • Virtual temperature sampling control device and method for induction heating

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[0021] In order to enable those skilled in the art to understand the technical solutions of the present invention, a detailed description is attached with the attached preferred embodiments. The embodiments illustrated in the drawings are only used to illustrate the technical solutions of the present invention, and do not limit the present invention. invention.

[0022] Please refer to figure 1 , 2 , This article is attached figure 1 The block diagram of the virtual temperature sampling system and attached figure 2 The flowchart of the temperature control method described in detail the embodiment of the present invention.

[0023] The virtual temperature sampling system of the present invention is mainly composed of an induction heating inverter, a data acquisition component, and a data processing control component.

[0024] The induction heating inverter contains a heating coil and a power switch tube. The power switch tube generates a certain square wave based on heat. The square...

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Abstract

The invention provides a virtual temperature sampling control device and method for induction heating. The system includes an induction heating inverter, a data acquisition part and a data processing control part; the induction heating inverter is provided with a power switching tube use for generating square wave signals; and the data acquisition part acquires the square wave signals, analyzes the duty ratio of the square wave signals, converts analysis results into analog signals, compares the analog signals with a temperature threshold value, determines a difference value, performs amplification and PID setting on the difference value, and transmits PID setting results to the induction heating inverter. With the virtual temperature sampling control device and method for induction heating of the invention adopted, improvement on the accuracy and stability of temperature data sampling can be better benefitted. The virtual temperature sampling control device and method for induction heating have strong anti-interference ability. An acquisition device can be flexibly configured according to actual situations. The virtual temperature sampling control device and method have stably high precision and can be conveniently configured in induction heating devices of different types and specifications.

Description

technical field [0001] The invention belongs to the technical field of control, and in particular relates to a virtual temperature sampling control device and method for induction heating. Background technique [0002] The promotion of the concept of green and efficient industrial production in the new era has made induction heating widely used in many fields such as heat treatment of metal surfaces, welding, and metal thermal processing due to its unique advantages. In the working process of induction heating, the coupling of electromagnetic field and temperature field makes the temperature acquisition and processing of the workpiece extremely complicated, and the change of temperature will affect the best state of zero current and zero voltage of the switching device of the inverter equipment, even damage the equipment. [0003] There are a variety of temperature acquisition systems in the prior art, but most of these systems require cumbersome analog data acquisition poi...

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Application Information

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IPC IPC(8): G05D23/30
Inventor 黄志华郑元彬翟学军
Owner BEIJING SNTA ENERGY SAVING ELECTRICAL
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