Temperature regulation of metal extrusion press, by generating input function and axial bar temperature so that temperature and press speed is constant and at set value

摘要

By evaluating the press cycle that has just occurred, the variation with length of an input function uk+1(l) and the axial bar-temperature ThetaBk+1(l) of the subsequent cycle is generated such that the temperature of the metal section is as constant as possible and equal to a set value, and the press speed remains as constant as possible and equal to a predetermined value. The calculated input function is fed in by following the variation with time of the calculated input function.