Almost Dynamic Output Regulation for Switched T-S Fuzzy Systems

Abstract

This article studies the almost output regulation (OR) issue for switched Takagi–Sugeno fuzzy systems (T-SFS) with the OR and the disturbance suppression properties simultaneously considered. A switched fuzzy dynamic output feedback controller (OFC) is firstly constructed for switched T-SFS with modeled and unmodeled disturbances. By considering the average dwell-time (ADT) constraint and introducing different coordinate transformations of subsystems, a solvability condition on the almost OR issue of switched T-SFS is then established with the multiple Lyapunov functions method. Furthermore, the controller gains are designed to drive the switched T-SFS to satisfy the OR and $L_2$-gain properties. Finally, a simulation case is provided to validate the feasibility of the offered control technique.