Abstract：In the continuous pickling line and tandem cold rolling, elongation and tension were out of the precise control level when tension-leveler flying gauge changed or roll changed, which affected the pickling quality. To solve this problem, a new tension model was proposed, and the steady state error was put into the model to improve the tension-leveler model accuracy. Practical application results show that the average tension deviation of the first coil strip dropped from 4.477% to 1.798% after changing roll, which greatly improved the elongation control level. The generic solution of the steady state error in the tension model was provided. The proposed model was used properly on-line for a long time which was suitable for industrial promotion.
2015, Vol. 25 
