METHOD FOR CONTROLLING STRIP THICKNESS OF TWIN-ROLL STRIP CASTING PROCESS

摘要

A method for controlling strip thickness of twin-roll strip casting process, which can constantly control roll force and strip thickness at the same time, is provided. A method for controlling strip thickness of twin-roll strip casting process comprises: measuring roll gap values, obtaining a proportional controller output from roll gap errors obtained by giving feedback the measured roll gap values to a portional controller, thereby comparing the measured roll gap values with a target strip roll gap value; obtaining an integral controller from an error sum obtained by summing up the thickness error values after obtaining thickness error values by measuring thickness values of a cast strip, giving feedback the measured strip thickness values to an integral controller, thereby comparing the measured strip thickness values with a target strip thickness value; adding up the proportional controller output with the integral controller output to obtain a controller output; and adding the controller output to an initial casting rate.