M. I. Castellanos

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This paper highlights the interest of step-by-step higher order sliding mode observers for MIMO nonlinear systems with unknown inputs. A structural matching condition, stating on the possibility to design such observers and to reconstruct the unknown inputs, is derived. A finite time sliding mode observer, based on the hierarchical use of the super twisting(More)
A frequency domain analysis of the second order sliding mode algorithms, particularly of the twisting algorithm is carried out with the use of the describing function and the locus of a perturbed relay system approach. It is shown that in the presence of an actuator, the transient process converges to a periodic motion. Parameters of this periodic motion(More)
Posterior reversible encephalopathy syndrome (PRES) is a clinicoradiological syndrome in which patients present with an acute or subacute clinical presentation of seizures, visual disturbances, headache, and altered mental status. The pathophysiology of PRES may be explained by endothelial dysfunction that leads to transudation of fluids and protein,(More)
ACKNOWLEDGMENTS We would like to thank Sabina Matyiku and Emily Gasser for help with initial data processing, their work on phonetic transcription. We would also like to thank participants of BUCLD 36, NECPHON 2012, and the Yale Computational Linguistics Group (CLAY) for valuable feedback on earlier versions of this work. ABSTRACT This paper examines the(More)
This paper deals with the application of the paradigm Oriented to Objects in a distributed measurement system. The purpose of this study is to obtain a flexible electronic test station model that will allow modifications in the procedures with no modifications to its main code. The model allows the integration of GPIB equipment in a distributed measurement(More)