METHOD FOR CONTROLLING SPEED OF CONTINUOUS ROLLING MILL

摘要

PURPOSE:To improve the sheet passage and to improve the quality of sheet thickness and width by absorbing a loop amount accumulated for a period of time from a time when a stock is bitten by a stand to a starting time of roll peripheral speed control immediately after the bitting. CONSTITUTION:In the case the polarity of corrective output for roll speed is in a direction where loop generation between stands is restrained, a control gain value is changed in accordance with a generated loop amount in time series for a certain period of time from a control starting time to absorb a loop amount accumulated between stands for a very small time delay from a time when a stock is bitten by a stand to an immediately after control starting time and a roll peripheral speed correction amount is amplified.