"Fuzzy Surface Temperature Control"
, 10-1994, Roman Winkler. Fuzzy Surface Temperature Control. Diplomarbeit, Johannes Kepler Universität Linz, 1994.
Fuzzy Surface Temperature Control
Sprache des Titels:
Steel production covers a large number of processes,
one of them is the continuous slab casting process. In this process liquid steel is poured into a cooled copper mould, where the surface of a continuous strand is built. This solid shell still confines liquid steel and is pulled out of the mould into a strand guide and is further
cooled by direct impingement of water. This guarantees that the latent heat of crystallisation is removed i.e. solidification from the surface to the center takes place. This direct strand cooling has an enormous influence on the strand quality and thus requires highest attention. Thus perfect control is needed.
The thesis consists of three main parts:
The necessary physical knowledge concerning heat conduction as a computer model base for the controlled
system simulation is given in the first part.
An appropriate mathematical model is set up in the second
part in order to achieve the highest possible accuracy on one hand and to keep computation time as low as possible on the other hand. These two aspects are combined in using the integral method with reasonable temperature distribution assumptions, where several approaches are investigated.
The last part starts with an exact description of the control problem, followed by an overview of fuzzy logic and control and then shows explicitly, why and how a fuzzy controller is applied. The high efficiency of the constructed fuzzy controller is finally shown by some typical simulation results.
Notiz zum Zitat:
Roman Winkler. Fuzzy Surface Temperature Control. Diplomarbeit, Johannes Kepler Universität Linz, 1994.