Shape control in Sendzimir mills using both crown and intermediate roll actuators

A control philosophy utilizing both the As-U-Rolls and first intermediate rolls as shape control mechanisms is described. A robustness result for the design is developed. The result is useful, because such a mill is normally used to roll a large number of materials, and a single controller must therefore be used for many different schedules. A variety of simulation results are presented, showing the transient responses and performance of the multivariable shape control system