METHOD FOR CONTROLLING FLYING THICKNESS CHANGE IN CONTINUOUS HOT-ROLLING MILL

摘要

PROBLEM TO BE SOLVED: To solve such problems as a dynamic characteristic compensation problem during changing thickness in a flying thickness change control by which the thickness on the outlet side of a rolling mill is changed during rolling and the problem with that the length of changed off-gage can not set shorter. SOLUTION: Dynamic characteristic compensators are respectively installed on the input terminals of an automatic sheet-metal gate controller and a speed controller. In these dynamic characteristic compensators, the dynamic difference between responses of a thickens control system and a speed control system is compensated to similar target pattern of thickness change and the target pattern of speed change and a command value pattern for changing so that the results changing the thickness and the speed are made to coincide with each other are prepared and outputted.