Robust control with state decoupler for combined shape and gauge system in rolling process

Considering the dynamic characteristics of the deformation zone, a new model of combined shape and thickness system in rolling process was proposed, regarding bending force and gauge as the main factors. Taking various kinds of secondary causes, perturbation and disturbance into consideration, robust control methods were brought in. A mathematic model was proposed based on field data, then static decoupler and robust controller were developed with benefit of robust control toolbox in MATLAB. Simulation results show the effectiveness of tracing and decoupling and robustness for parameter perturbation.