Sliding Mode Control Overprint System

This thesis makes a theoretical and simulation study on an intelligent variable structure controller and its application to the automatic overprint control systems of gravure printing press.The paper first designs an automatic overprint controller in light of the routine sliding mode variable structure. Then the design of the intelligent control of sliding mode variable structure is presented on the basis of the great complementarities of the sliding mode variable structure, the fuzzy control and the neural network control. By adjusting on-line the value of symbolic function terms with the fuzzy neural network, the robustness of the system is achieved and the chatter in the sliding surface is reduced.The theoretical analysis and the simulation result all show that, with the advantages of the fast converging speed, the simple algorithm as well as the good stability, the intelligent control of variable structure is practical and efficient for the overprint controller and the other fast-changing complicated industrial systems.