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A Design of Electric Arc Furnace Controller Based on Embedded System

Author: WangYuZuo
Tutor: LiQiang
School: Xi'an University of Technology
Course: Detection Technology and Automation
Keywords: Electric Arc Furnace controller S3C2410 Embedded Linux MiniGUI
CLC: TM924.4
Type: Master's thesis
Year: 2009
Downloads: 11
Quote: 0
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Abstract


The Electric Arc Furnace controller plays an important role in the Electric Arc Furnace steel-making, the research on control method of Electric Arc Furnace is focused on the electrode controller. Along with the in-depth development of computer, network and micro-electronics technologies, especially the design of SoC and development of embedded OS, embedded system is increasingly widely used in industrial control equipment, mobile communication device, household appliance and consumer electronic, etc.Based on several common Electric Arc Furnace controllers, this paper studied the Application of embedded system in Electric Arc Furnace controllers, to design and debug the software and hardware systematically with Structured and modularized program. Through researches and analyses of the constant current, constant power and constant impedance control strategies, the control method of constant impedance, which is widely used and effective, is employed for the constant control over EAF controller. Not only can it compensate for the lack of functions of single-chip system, and that complexity of algorithms can not be embedded in PLC, it can also reduce system cost while collecting advantages of fulfill complex algorithm of the Industrial PC.With 32-bit low power micro-controller S3C2410 as the core, the hardware designed the arc current and arc voltage analog Detect, transformer stall state detection, the electrode-conditioning control, as well as keyboard and display circuit. The software part succeeded in the transplanting and compiling of embedded Linux OS core, and develops device drivers and applications for A/D, keyboard, Switch Input keystrokes as well as D/A on this basis. Meanwhile completed the transplanting and compiling of the embedded interface system MiniGUI under Linux OS, furthermore, realized favorable interface by compiling program. In this paper, the collected arc current, arc voltage signals are processed, and to control the electrode by giving output value of the volume of control. At the same time relevant data information were displayed in the LCD.Experiments show that the system has completed the basic functions of the EAF controller, and achieved the desired design objectives. The software and hardware system based on the embedded OS offers a powerful theoretic and practical platform for the further research, at the same time provides a good reference for the development of electric arc furnace controller.

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CLC: > Industrial Technology > Electrotechnical > Electrification,electrical energy application > Electric heating > Electric arc furnace
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