AN INNOVATIVE STRATEGY FOR OPEN-LOOP CONTROL OF HOT DEFORMATION PROCESSES

A new strategy for systematically calculating near optimal control par ameters for hot deformation processes is presented in this article. Th is approach is based on modern control theory and involves deriving st ate-space models directly from available material behavior and hot def ormation process models. Two basic stages of analysis and optimization are established in this strategy for nonlinear, open loop control sys tem design for producing required microstructural characteristics, uni formity of deformation and temperature distribution, and other importa nt physical requirements of hot worked products.