Abstract:Such characteristics of alum inium strip and foil as soft an d thin gauge make tension conffol one of the key techniques for automation gauge control(AGC).To avoid the disadvantage of traditional mathematical control method which is unfitful for nonlinear hysteresis.the techn ique for tension AGC fuzzy control was developed and thickness deviation more than 3% of product thickn ess was achieved consequently in l 350 mln cold rolling mill of aluminium strip and foil.Additionally,be