DYNAMIC DISTRIBUTED-PARAMETER MODEL OF STEEL STRIP

An understanding of the continuous hot dip galvanising process suggest s that the strip stability through the metering gas knives needs to be improved if higher zinc coating standards are to be achieved. Control of the strip vibration is therefore essential. This paper describes t he development of a dynamic model of steel strip that provides a means for developing control schemes. The model uses a discrete number of e lements into which the strip is divided. Response of the model to a va riety of stimuli is obtained. The implementation of the model through the simulation software SIMULINK is described, together with simulatio ns using various stimuli. A comparison of the results obtained by simu lation of the model with classical results shows that although accurac y drops with harmonic number, it increases with the number of elements used. (C) 1997 The Institute of Materials.