LMI‐based criterion for the robust guaranteed cost control of uncertain switched neutral systems with time‐varying mixed delays and nonlinear perturbations by dynamic output feedback

Abstract

This article reports on an investigation into robust guaranteed cost control (GCC) for uncertain switched neutral systems (USNSs) with interval time‐varying mixed delays and nonlinear perturbations via dynamic output feedback. Delay‐dependent sufficient conditions are suggested to guarantee the robust exponential stability and to obtain robust GCC for USNSs using the average dwell time approach and the piecewise Lyapunov function technique in terms of a set of linear matrix inequalities. The problem of uncertainty in the system model is solved by deploying the Yakubovich lemma. Lastly, two examples (i.e., a numerical example and the water‐quality dynamic model for the Nile River) are given to verify the efficiency of the propounded theories. © 2016 Wiley Periodicals, Inc. Complexity 21: 555–578, 2016

PSO based Takagi-Sugeno fuzzy PID controller design for speed control of permanent magnet synchronous motor

“…It is well visible in the simulation results that = 5 gives a satisfactory control performance. It should be noted that the proposed approach is similar to the GA-based Fuzzy-PID controller presented in [29] and simpler than the previous fuzzy methods given in [34].…”

“…Uncertainty is one of the inseparable parts of the industrial system [29][30][31]. The fuzzy logic approach controls a system intelligently without dependency on an accurate system model [32,33].…”

“…In this figure, ZO( 3 ) denotes zero, NB( 1 ) represents negative big, NM( 2 ) is the negative medium, PM( 4) is a positive medium, and PB( 5) is positive big. The controller gains are set as [29]:…”