Optimal control system for hot strip finishing mill

摘要

This paper describes how to control strip gauge, looper angle, and strip tension for a hot strip finishign mill and the application result. This is based on the optimal servo theory and the model decoupling method. In finishing mill process, there exists mutual interaction among strip gauge, looper angle, and strip tension. Conventionally, each of them is controlled independently. To improve the control performance, the multivariable control considering this interaction is applied to all productions. Th enew control system is also used for the tension control of the automatic width control.