output tracking control for neutral systems with time-varying delay and nonlinear perturbations

This paper is concerned with the H ∞ output tracking control for linear neutral systems with time-varying delay and nonlinear perturbations. The considered systems consist of different neutral and discrete delays without any restriction on the upper bound of the derivative of the delay. Based on the free weighting matrix method, a delay-dependent sufficient condition is established to guarantee that the output of the neutral systems tracks the output of a given reference model well in the H ∞ sense. Finally, two illustrative examples are presented to show the effectiveness of the proposed H ∞ output tracking design.