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In this paper, a class of time delayed nonlinear systems is considered where both parametric uncertainty and structural uncertainty are involved. The delay is time-varying and the unknown parameters are embedded in the system nonlinearly. The only limitation on the structural uncertainty is that its bound is known. A sliding mode observer is proposed to estimate the system state and an adaptive law...
Based on observer, delay-dependent robust H∞ controller design problem for time-delay systems with a class of nonlinear uncertainties is discussed in the paper. Assuming that the nonlinear uncertain functions in the considered model are gain-bounded, we obtain a sufficient condition for the robustly asymptotic stability and H∞ performance of the closed-loop system in the light of Lyapunov stability...
In this paper, the fault detection problem for nonlinear networked control systems (NCSs) with packet dropout and delay is investigated. A nonlinear stochastic systems model is proposed to account for the NCSs with random packet dropout and network-induced time-varying delay in both from sensor to controller (S/C) and from controller to actuator (C/A). Based on the obtained NCSs model, employing observer-based...
This paper focuses on the observer design for nonlinear time-delay systems of neutral type. Nonlinearities of the system under consideration are supposed to be globally Lipschitz with respect to their arguments. We assume that the system output is corrupted by a norm-bounded noise and may contain delayed states. We brought new delay-dependent conditions under which the fault-tolerant observer converges...
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