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In this paper, new time and frequency domain designs of Unknown Inputs Full Order Observers (UIFOO) for a class of delayed singular systems are proposed. A constant time delay is present in both state and input vectors. The time-domain approach is based on Lyapunov-Krasovskii stability theory where the optimal gain implemented in the design is obtained in terms of linear matrix inequalities (LMIs)...
This paper deals with the practical aspects of reduced-order distributed functional state observers design for interconnected linear systems subject to time delays in the interconnections. Contrary to some estimation strategies which only take the ideal instantaneous output information into account, the proposed scheme incorporates output information that is inevitably encountered with time delays...
This paper proposes a state observer with a cascade structure for a class of nonlinear systems in the presence of delayed output measurements. The first system in the cascade allows to estimate the delayed state while each of the remaining ones is a predictor. Each predictor estimates the state of the preceding one with a prediction horizon equal to a fraction of the time delay in such a way that...
This paper considers robust fault detection and isolation observer (RDO) for uncertain singular time delay system with faults. A sufficient condition for the existence of RDO and an efficient design algorithm are obtained. The design of RDOs associated with various splitting of the faults is also discussed.
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