Abstract
The dynamicp erformance and more accuracy is mandatory in mill industry according to demand of steel rolling quality. The phenomenon of torsional vibration is ubiquitous in rolling mill system, while the mill is just rolling steel or is blocked which the load disturbance impact.The torsional vibration not only threats the mill's normal work, but also affects the quality of steel strip, and reduces the endurance life of its drive system. So how to reduce or eliminate the torsional vibration is a difficult question of research now.
Considering torsional vibration causing by rolling perturbation, model predictive control is applied to rolling mill system. The constraint condition is porposed to meet manipulated variable constraint. The optimization problem with linear inequalities can be solved by Quadratic Programming. The simulation results show that the design improves the dynamic performance and suppress torsional vibration causing by rolling perturbation. The model predictive control suppresses rolling perturbation.
Key words: rolling mill; torsional vibration suppression; two-mass system;
