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In this paper we consider the problem of uniform asymptotic stabilization of neutral delay differential systems by a suitable choice of linear feedback law, where the controller is static and at timet 0 has full knowledge ofx(t 0) ∈ ℝ n as well asx(t 0 − d) for finitely many delays present in the system. Using complex analysis in several variables in a(More)
This paper addresses the problem of disturbance attenuation (in the sense of L2-gain), with internal stability and no cost on the control input, for nonlinear systems, when the problem of almost disturbance decoupling is not solvable, i.e., when the least achievable attenuation level between disturbance and regulated output is nonzero. Two different(More)