Development of dynamic model building and simulation of rolling mill system based on shape and thickness control

The shape and thickness are the most important quality indexes of strip,and rolling mill is complex nonlinear system,then the shape of strip is influenced by the dynamic characteristics of rolling mill.In this paper,the development and the problems of dynamic model building and simulation of rolling mill are presented.Firstly,the research on dynamic characteristic of mill was present,which is used on the thickness of strip.Then,the dynamic model building of rolling mill based on shape control was discussed with emphasis.The method that taking the rolls as elastic continuous body was proposed,the dynamic of rolls was studied based on the continuous body dynamics,the dynamic model of rolling mill based on shape control was built,the theory was introduced.The model proposed is very important for improving the control accuracy and improving the quality of the strip.