Appeal No. 95-2637
Application 08/128,051
generating a moving average of said filtered
ratios to provide a current filtered relationship between said
calculated discharge temperatures and said measured rolling mill
temperatures;
comparing said aim rolling mill temperatures with
said measured rolling mill temperatures of pieces in the mill to
establish error values;
statistically filtering said error values to
remove extreme values of said error values based upon time in the
mill to provide filtered error values;
generating a moving average of said filtered error
values;
determining a short-term bias to said aim
discharge temperatures as a function of said filtered error
values and said filtered ratios;
maintaining a historical table of short-term
biases;
generating long-term biases specifically related
to product types based upon said tables of short-term biases;
adjusting said aim discharge temperature by
summing said aim discharge temperature given by the mill practice
table, said long-term bias and said short-term bias; and
controlling conditions in the reheat furnace
according to the furnace model and said adjusted aim discharge
temperature to drive said calculated discharge temperature to
said adjusted aim discharge temperature.
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Last modified: November 3, 2007