PI Controller Design for Temperature Control of Reheating Furnace Walking Hearth Type in Setting up Process

Abstract:

The slab reheating process for iron rolling to the small diameter wire in Ratchasima Steel Productions Co., Ltd. factory (Nakhon Ratchasima, Thailand) use the Reheating Furnace Walking Hearth Type (RFWHT). The Reheating Furnace was installed in 1964. The problems in the present are increasing performance of temperature control and reducing production cost. The factors affecting the price of wire rod are electrical power and fuel consumption. Because of this reason, the system requires an optimal PI controller for control the temperature inside each zone of the furnace and the steel production manufacture select the time from 10:00 PM to 8:00 AM for steel production because it has low cost. In addition, the process will stop during the day time. This paper presents the mathematical model for temperature control of RFWHT in setting up process using system identification with Genetic Algorithm. The setting up process consist RFWHT, fuel flow control through servo valve and PI controller. The result of the research demonstrates to create structure of the mathematical model of this process and PI controller design for the temperature control. Furthermore, the temperature responses show that the PI controller can reduce fuel consumption rate of the system.

• Periodical: Advanced Materials Research (Volume 748)
• Pages: 801-806
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.748.801
• Online since: August 2013
• Authors: T. Pongam, J. Srisertpol, V. Khompis
• Keywords: Control Theory, Genetic Algorithm (GA), Mathematical Model of Reheating Furnace Walking Hearth Type, System Identification

References

[1] Emmanuel Karlo Nyarko and Rudolf Scitovski: Journal of the Applied Mathematics and Computation, Vol.153, issue 3(2004), p.651

[2] Ahned N. Adb – Alla., S.J. Cheng, J.Y. Wen and Jing Zhang, in Proc. of 2006 International Conference on Power System Technology, Chongqing, China, 2006, pp.1-5.

[3] Harzeh Jafar Karim and Mohammad Hassan Saidi: Journal of Iron and Steel Research, Vol.17 No.4(2010), p.12

[4] J. Srisertpol, S. Tantrairatn, P. Tragrunwong, and V. Khomphis: International Journal of Mathematical Model and Method in Applied Sciences, Vol.5, issue 1(2011), p.167

[5] Kuster A., Gustaaf van Ditzhuijzen., in Proc. of the 3rd IEEE Conference on Control Applications, Glasgow, Scotland , 1994, pp.1557-1563.

[6] Chia-Tsung Hsieh., Mei-Jiau Huang., Shih-Tuen Lee and Chao-Hua Wang: International Journal of Computation and Methodology, Vol.53, issue 9(2008), p.966

[7] Gustaaf Van Ditzhuijzen., Dirk Staalman and Arnold Koorn., in Proc. of the 2002 IEEE International Conference on Control Application, Glasgow, Scotland, 2002, pp.361-366.

[8] Wei-Hsin Chen, Mu-Long Lin and Tzong-Shyng Leu: Journal of Marine Science and Technology, Vol.18 No.1(2010), p.24

[9] Mir Esmaeil Masoumi and Zahra Izakmehri: International Journal of Modeling and Optimization, Vol.1No.1(2011), p.74

[10] Yingxin Liao, Min Wu and Jin-Hua She: in Proc. of IEEE International Conference on Control Application, Munich, Germany, 2006, pp.3175-3181.

[11] Man Young Kim: The International Journal of Heat and Mass Transfer, Vol.50, issues19-20 (2007), p.3740

[12] Sang Heon Han., Daejun Chang and Cheol Huh: Energy, Vol.36, issue 2(2011), p.1265

[13] Anton Jaklic., Franci Vode and Tomaz Kolenko: Applied Thermal Engineering, Vol.27(2007), p.1105

[14] T. Pongam, J. Srisertpol and V. Khomphis: International Journal of Modeling and Optimization, Vol.2 No.2 (2012), p.114