arXiv subjects

J. Tsinias

Publications and source records attributed to J. Tsinias.

3 recordsLinked to original sources

arXiv2012

New Results on Sampled-Data Feedback Stabilization for Autonomous Nonlinear Systems

Sufficient conditions are established for sampled-data feedback global asymptotic stabilization for nonlinear autonomous systems. One of our main results is an extension of the well known Artstein-Sontag theorem on feedback stabilization concerning affine in the control systems. A second aim of the present work is to provide sufficient conditions for sampled-data feedback asymptotic stabilization for two interconnected nonlinear systems. Lie algebraic sufficient conditions are derived for the case of affine in the control interconnected systems without drift terms.

math.OC↗

arXiv2012

Observer design for nonlinear triangular systems with unobservable linearization

The paper deals with the observer design problem for a wide class of triangular time-varying nonlinear systems, with unobservable linearization. Sufficient conditions are derived for the existence of a Luenberger-type observer, when it is a priori known that the initial state of the system belongs to a given nonempty bounded subset of the state space. For the general case, the state estimation is exhibited by means of a switching sequence of time-varying dynamics

math.OC↗

arXiv2011

Sufficient Conditions on the Existence of Switching Observers for Nonlinear Time-Varying Systems

We derive sufficient conditions for the solvability of the observer design problem for a wide class of nonlinear time-varying systems, including those having triangular structure. We establish that, under weaker assumptions than those imposed in the existing works in the literature, it is possible to construct a switching sequence of time-varying noncausal dynamics, exhibiting the state determination of our system.

math.OC↗