Robust Control facing disturbances: Application to a coil winding machine

Manufacturing and modern production systems offer high flexibility and various benefits in order to deliver the required production rates, a higher products quality, while minimizing the use of resources. In such systems, time control is a very important area. In this study a robust control strategy towards time disturbances is presented. It consists of generating by the control a temporal shift similar to the disturbance in order to avoid the death of marks on the levels of synchronization transitions of the P-time Petri net model. A computing algorithm allowing the application of the proposed approach at various graph nodes is established. Finally, to illustrate the effectiveness and accuracy of proposed robustness approach, an application to a coil winding unit is outlined. Keywords— Robustness, time disturbance, P-time PNs, coil winding machine