Multivariable Modeling and Tracking Control for the Strip Tension of Bridling Roll in the Continuous Annealing Line

By means of the mechanism analysis for the strip tension, the dynamical mechanism model and the state space model of the strip tension of the bridling roll are proposed. Based-on these models, the multivariable tracking controller of the strip tension is designed. The proposed tracking controller is designed using the state feedback and pole assignment method, which is different with the traditional PID controller. The proposed tracking control method of the strip tension can control the actual strip tension to track asymptotically their set-points with the satisfactory performance. Simulation experiments are implemented to illustrate the efficiency of the tension model and multivariable tracking control method.