Experimental PI Fuzzy Controller to Control Pinch-roll Pressure via Hydraulic servo-valves in Continuous Casting Machines in Mobarakeh Steel Company

Majlesi Journal of Electrical Engineering

مقاله 8، دوره 14، شماره 3، آذر 2020، صفحه 67-71   

نوع مقاله: Review Article

شناسه دیجیتال (DOI): 10.29252/mjee.14.3.8

نویسندگان

Mohammad Askari؛ Arash Daghighi^*

Department of Electrical Engineering, Shahrekord University, Shahrekord, Iran.

چکیده

In this paper, the Fuzzy PI controller is used to control the hydraulic servo-valves in Saba iron casting facility in Mobarakeh Steel Company. The electronic and control circuitry in the hydraulic servo-valves was damaged and the oil pressure sensor was not working anymore. The roles were bending and slabs were occasionally broken. Any replacement of the whole servo-valve system was not an option. Therefore, a pressure sensor for the oil outlet is installed and using the input to the control unit, the pressure is controlled. Fuzzy membership functions were defined in PLC to implement a PI Fuzzy Controller. The servo-valve was modeled and simulation results shows good controllability of the process in presence of disturbance. The experimental measurements of the slab pressure proved promising application of Fuzzy PI controller for the system under consideration.

کلیدواژه‌ها

PI controller؛ fuzzy logic؛ Membership function؛ Hydraulic Servo-Valves؛ Iron Casting

مراجع

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[3] Aidan O'Dwyer, “ Handbook of PI And PID Controller Tuning Rules,” Imperial College Press, 2006.

[4] J. Michael Jacob, “Industrial Control Electronics,” Prentice Hall International Edition, 1989.

[5] L.A.Zadeh, “Fuzzy sets, information and control,” June 1965.

[6] MOOG Inc - Industrial Control Division, servo-proportional control valve; D691 series catalog.

C. Grosan and A. Abraham, “Intelligent Systems, A Modern Approach”, Springer, 2011.