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A decentralized adaptive methodology is presented for large-scale nonlinear systems with model uncertainties and time-delayed interconnections unmatched in control inputs. The interaction terms with unknown time-varying delays are bounded by unknown nonlinear bounding functions related to all states and are compensated by choosing appropriate Lyapunov-Krasovskii functionals and using the function...
In this paper, we present a non-fragile guaranteed cost control design method for uncertain systems with time- varying delays in state and control input, even though the controller gain is perturbed. The uncertain nonlinear term in the systems is norm bounded and the linear matrix inequality(LMI) optimization method is employed as a stability analysis of the systems. We design a robust controller...
In this paper, the adaptive dynamic surface control (DSC) method is presented for a class of uncertain nonlinear systems with unknown time delays in strict-feedback form. Using the DSC technique, the problem of "explosion of complexity" of the traditional backstepping algorithm can be eliminated and the uncertainties of the unknown time delays are overcome by using appropriate Lyapunov-Krasovskii...
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