Pre-controller used in press synchronism control system of bill flash butt welding

The characteristics of billet flash butt welding on endless welding rolling were analyzed. To meet the demand of synchronization in butting phase, a scheme to predict and control the synchronization error besed on neural network was presented. A nonlinear hydraulic system and a coupling model were designed with AMEsim. Through the interface between Simulink and AMEsim, cosimulation was achieved. The result shows that the pre-controller exhibits excellent performance.