Model-predictive regulation of the zones of enamel - method

摘要

A method for the controlled generation of crystalline mouldings in the zone melting by influencing variables, wherein the type of influence on the basis of a balancing of the measured values is - with, - and predicted course - values of system statuses is determined, the is - values of the system states measured directly and / or indirectly by means of a state monitor is to be measured, characterized in that the predicted course - values, starting from the directly or indirectly measured is - values are calculated in a model-based manner, wherein the underlying model comprises the following equations: $ẋ$₁ : d / dt (r_F) = v_Me·tan (α_F)$ẋ$₂ : d / dt (r_C.) = v_Cr·tan (φ_C.)$ẋ$₃ : d / dt (h_F) = v_Me – v_F$ẋ$₄ : d / dt (h_C.) = v_C. – v_Crwith supply rod radius (r_F), Crystal radius (r_C.), upper zone height (h_F), lower zone height (h_C.), Speed of the infrared front (v_Me), Supply rod speed (v_F), Crystal speed (v_C.), Speed of the crystallization front (v_Cr), Crystal angle (φ_C.), and angle at the supply rod (α_F), and in that at least one correcting variable, selected from generator power (p_Gene), Supply rod speed (v_F) and crystal speed (v_C.), is changed in such a way that the deviation from the intended - and the predicted course - values is reduced.