The Shape And Thickness Of Decoupling Control Based On ADRC Technology

Strip flatness and thickness control system with strong coupling, large time delay, uncertainty,disturbances and nonlinear characteristics, the plate thickness, plate shape control will affect and viceversa, making it difficult for the flatness and gauge decoupling control good. The research on theshape control system of plate thickness is the first mathematical model is then decoupling method fordecoupling, and in these studies are often ignored in the model of oil film thickness on effect of platethickness, plate shaped crown and flatness of study is one of two. Practice has proved, the couplingrelationship between shape and thickness interpretation plate these studies can not very well.The basis of systemic analysis on various coupling factors influence on flatness and thicknesscontrol on, established a mathematical thickness and shape convexity coupling system model with theeffect of oil film thickness. The simulation analysis of the original model and the new model, thecontrast of two model curve is obtained, the new model improves the plate coupling between convexdegree and thickness of. Auto disturbance rejection decoupling controller design and the new model ofthe relative, and carries on the simulation, the simulation results show that, the ADRC technology canbe very good and fast decoupling control of the model, and use the PID controller on the systemdecoupling, coupling relationship still exists, and not completely eliminate.Shape except for crown said can express, with flatness to therefore, established the mathematicalthickness of plate and the plate flatness coupling system model with the effect of oil film thickness.Simulation of the model, the curve is more clearly show the strong coupling relation between theprofile and flatness of plate thickness. The system design of active disturbance rejection decouplingcontroller, after simulation, the system can achieve good decoupling. Then the control, the modelusing the PID controller simulation, system does not achieve the decoupling, and the model curveaccuracy and application of curve of ADRC after decoupling difference of more than. So the accuracyof the ADRC method not only improves the model, but also has a fast and robust, which provides aneffective way for rolling mill control...