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The fault diagnosis problem of a class of nonlinear systems based on a differential approach is used to determine fault diagnosability with the minimum number of measurements from the system. In order to reconstruct the faults on the system, a polynomial observer is proposed, which includes in its structure corrections terms of high order. Another two schemes of nonlinear observers are used for reconstructing...
This paper deals about the problem of fault diagnosis of a class of nonlinear systems using the theory of state observers. In order to reconstruct the faults of the system, a polynomial observer is proposed, which includes in its structure correction terms of high order. The methodology consists of add to the original system the faults as new states, which increase the order of the observer. This...
In this paper we deal with the synchronization of the Colpitts oscillator. The synchronization problem for chaotic systems is treated as an observation problem, some results based on a differential algebraic approach are used in order to determine observability with the measurements from the system. The strategy consists of proposing a slave system (observer) which tends to follow asymptotically the...
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