Comparison of New Flatness-based Switching Reconfiguration Control Approaches

In this paper, a comparison between two new approaches of flatness-based switching control of dynamical systems with variation of operating modes is proposed. For each model, a corresponding flatness-based controller is designed and consequently, a multi-controller structure is obtained. The localization of the process current model is carried out using two distinct methods, the first to find the smallest value of residue, and the second based on the minimization of a test performance characterizing the distance between the current model of the system and the given mode. The correspondent controller of identified model is applied to the real system tacking in consideration the reference trajectory generated from different flat outputs. The performances obtained by switching in terms of tracking trajectory and fault rejection are discussed in this paper and the stability of the corresponding switched discrete-time linear systems is given. A comparison of obtained results between the two approaches is discussed.