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A novel adaptive fuzzy decentralized regulation approach is proposed for a class of output-feedback large-scale nonlinear systems with unknown time-varying time-delays and interconnections. Each subsystem is needed only one fuzzy approximator, so the number of employed approximators equal to the number of subsystems of the whole large-scale systems. This is different from the existing results, which...
A simple nonlinear observer with a dynamic gain is proposed for a class of bounded-state nonlinear systems subject to state delay. By saturating the states of the system nonlinearities, we show that the observer exists whatever the delay is. Furthermore, it will be highlighted that the observer design is free from any preliminary analysis of the time-delay system such as estimating the Lipschitz constants...
In this paper, the problem of adaptive robust state observer design is considered for a class of uncertain nonlinear time-delay systems. It is supposed that the upper bound of the nonlinearity and uncertainty, including delayed states, is a linear function of some parameters which are still assumed to be unknown. An improved adaptation law with sigma-modification is employed to estimate the unknown...
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