METHOD FOR CONTROLLING LOAD DISTRIBUTION IN CONTINUOUS ROLLING MILL

摘要

PURPOSE:To decrease the burden on a mill operator and to improve the thickness accuracy of a product by learning successively the coefft. values necessary for calculating the correction quantity while executing the control of a load distribution. CONSTITUTION:The error between the actually measured rolling quantity value in a stand and the set value of the load distributing ratio thereof is discriminated. The error quantity of the load distributing ratio in such a state and the rolling down position and rolling down load quantity of each stand are respectively stored. The control for correcting the load distributing ratio is executed and the actually measured correction quantity value of the rolling position required for setting of the control and the actual change value of the rolling load quantity are respectively measured after the setting and are learned as the coefft. values for controlling the load distribution with respect to the error quantity of the load distributing ratio. Such coefft. values for controlling the load distribution are used for the subsequent determination of the controlled variable in the same condition.