Publication detail

ON-LINE FUZZY REGULATOR FOR CONTINUOUS CASTING PROCESS

MAUDER, T. ŠTĚTINA, J. MASARIK, M.

Original Title

ON-LINE FUZZY REGULATOR FOR CONTINUOUS CASTING PROCESS

English Title

ON-LINE FUZZY REGULATOR FOR CONTINUOUS CASTING PROCESS

Type

conference paper

Language

en

Original Abstract

Nowadays, continuous casting (CC) is used for providing almost one hundred percent of steel world production. The control of quality in CC products cannot be achieved without the knowledge of heat transfer and solidification of cast slabs. The solidifying slab passing through the caster is subjected to variable thermal conditions and mechanical stresses which can cause many serious defects in final structure of slabs. These defects might be eliminated by the optimal control of casting process. This paper describes an algorithm used to obtain time dependant casting parameters for stabilization of the casting process where high productivity is preserved. The presented algorithm can be used in two regimes. The first regime (off-line) can be used to find the control parameters such the casting speed and cooling intensities in the secondary cooling zone in order to get slab surface and core temperatures in specific ranges. The second regime allows the on-line regulation, stabilization of CC process and an immediate reaction to non-standard casting conditions such as a casting speed variation, or a breakdown of nozzle or cooling circuit in the secondary cooling. The algorithm is created as coupling between our original three-dimensional numerical model of temperature field and the regulation algorithm based on the fuzzy logic approach. The simulations indicate a good regulation efficiency and applicability for the real casting process.

English abstract

Nowadays, continuous casting (CC) is used for providing almost one hundred percent of steel world production. The control of quality in CC products cannot be achieved without the knowledge of heat transfer and solidification of cast slabs. The solidifying slab passing through the caster is subjected to variable thermal conditions and mechanical stresses which can cause many serious defects in final structure of slabs. These defects might be eliminated by the optimal control of casting process. This paper describes an algorithm used to obtain time dependant casting parameters for stabilization of the casting process where high productivity is preserved. The presented algorithm can be used in two regimes. The first regime (off-line) can be used to find the control parameters such the casting speed and cooling intensities in the secondary cooling zone in order to get slab surface and core temperatures in specific ranges. The second regime allows the on-line regulation, stabilization of CC process and an immediate reaction to non-standard casting conditions such as a casting speed variation, or a breakdown of nozzle or cooling circuit in the secondary cooling. The algorithm is created as coupling between our original three-dimensional numerical model of temperature field and the regulation algorithm based on the fuzzy logic approach. The simulations indicate a good regulation efficiency and applicability for the real casting process.

Keywords

Fuzzy optimization, temperature field, continuous casting, secondary cooling

RIV year

2013

Released

15.05.2013

Publisher

Tanger s.r.o

Location

Ostrava

ISBN

978-80-87294-39-0

Book

METAL 2013 Conference proceedings

Pages from

33

Pages to

39

Pages count

6

BibTex


@inproceedings{BUT99700,
  author="Tomáš {Mauder} and Josef {Štětina} and Miloš {Masarik}",
  title="ON-LINE FUZZY REGULATOR FOR CONTINUOUS CASTING PROCESS",
  annote="Nowadays, continuous casting (CC) is used for providing almost one hundred percent of steel world production. The control of quality in CC products cannot be achieved without the knowledge of heat transfer and solidification of cast slabs. The solidifying slab passing through the caster is subjected to variable thermal conditions and mechanical stresses which can cause many serious defects in final structure of slabs. These defects might be eliminated by the optimal control of casting process. This paper describes an algorithm used to obtain time dependant casting parameters for stabilization of the casting process where high productivity is preserved.  The presented algorithm can be used in two regimes. The first regime (off-line) can be used to find the control parameters such the casting speed and cooling intensities in the secondary cooling zone in order to get slab surface and core temperatures in specific ranges. The second regime allows the on-line regulation, stabilization of CC process and an immediate reaction to non-standard casting conditions such as a casting speed variation, or a breakdown of nozzle or cooling circuit in the secondary cooling. The algorithm is created as coupling between our original three-dimensional numerical model of temperature field and the regulation algorithm based on the fuzzy logic approach. The simulations indicate a good regulation efficiency and applicability for the real casting process.",
  address="Tanger s.r.o",
  booktitle="METAL 2013 Conference proceedings",
  chapter="99700",
  howpublished="electronic, physical medium",
  institution="Tanger s.r.o",
  year="2013",
  month="may",
  pages="33--39",
  publisher="Tanger s.r.o",
  type="conference paper"
}