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L. Bitschnau, M. Kozek:
"Modeling and Control of an Industrial Continuous Furnace";
Talk: 2009 International Conference on Computational Intelligence, Modelling and Simulation, Brno, Czech Republik; 2009-09-07 - 2009-09-09; in: "2009 International Conference on Computational Intelligence, Modelling and Simulation", (2009), ISBN: 9780769537955; 6 pages.

This paper describes a furnace model in state
space formulation for a continuous heat treating process specifically
suitable for controller design. The model comprises the
heat transfer in the conveyed steel strip, the heat transmission
from the heating or cooling elements to the steel strip, the
inner dynamics of the heating elements and the related furnace
portion, heat losses to the ambience, and time-varying parameters
of both the strip material and the process (strip velocity,
set temperature profile). Model inputs are the heating powers
of the individual heaters, and the outputs are either strip or
furnace temperatures at specific furnace positions. The model is
also suitable for on-line simulation, and due to the flexible and
versatile structure of the heater model a wide range of furnace
types can be covered with high accuracy. Simulation results for
classical PID zone temperature control and a proposed feedforward
extension demonstrate the efficiency of the furnace
model.

furnace model; continuous heating process; state-space model; time-variant parameters; heater model;