Results 1 to 10 of about 225 (84)

A State of the Art Review of Systems of Linear Inequalities and Related Observability Problems

open access: yesAlgorithms, 2023
This work is a short review of the state of the art aiming to contribute to the use, disclosure, and propagation of systems of linear inequalities in real life, teaching, and research.
Enrique Castillo
exaly   +3 more sources

Carleman estimates and observability inequalities for parabolic equations with interior degeneracy

open access: yesAdvances in Nonlinear Analysis, 2013
We consider a parabolic problem with degeneracy in the interior of the spatial domain, and we focus on Carleman estimates for the associated adjoint problem.
Genni Fragnelli, Dimitri Mugnai
exaly   +2 more sources

Robust Recursive Regulator for Systems Subject to Polytopic Uncertainties

open access: yesIEEE Access, 2021
We present a robust recursive framework for the regulation of discrete-time linear systems subject to polytopic uncertainties. Based on regularized least-squares with a penalty parameter, we formulate a convex optimization problem and weight the polytope
Jose Nuno A. D. Bueno   +2 more
doaj   +1 more source

Virtual Sensor: Simultaneous State and Input Estimation for Nonlinear Interconnected Ground Vehicle System Dynamics

open access: yesSensors, 2023
This paper proposes a new observer approach used to simultaneously estimate both vehicle lateral and longitudinal nonlinear dynamics, as well as their unknown inputs.
Chouki Sentouh   +2 more
doaj   +1 more source

A note on the necessity of filtering mechanism for polynomial observability of time-discrete wave equation

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2017
The problem of uniform polynomial observability was recently analyzed. It is shown that, when the continuous model is uniformly polynomially observable, it is sufficient to filter initial data to derive uniform polynomial observability inequalities for ...
Z. Hajjej
doaj   +1 more source

Null controllability for a coupled system of degenerate/singular parabolic equations in nondivergence form

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
We deal with a control problem for a coupled system of two degenerate singular parabolic equations in non-divergence form with degeneracy and singularity appearing at an interior point of the space domain. In particular, we consider the well-posedness of
Jawad Salhi
doaj   +1 more source

Attachment observability of a rotating body-beam

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2013
In this article we analyze the admissibility and the exact observability of a body-beam system when the output is taken in a point of attachment from the beam to the body.
Deguenon Judicael, Barbulescu Alina
doaj   +1 more source

Averaged Control for Fractional ODEs and Fractional Diffusion Equations

open access: yesJournal of Function Spaces, 2018
We generalize results concerning averaged controllability on fractional type equations: system of fractional ODEs and the fractional diffusion equation.
Darko Mitrovic   +2 more
doaj   +1 more source

Carleman estimates and null controllability of a class of singular parabolic equations

open access: yesAdvances in Nonlinear Analysis, 2018
In this paper, we consider control systems governed by a class of semilinear parabolic equations, which are singular at the boundary and possess singular convection and reaction terms.
Du Runmei   +3 more
doaj   +1 more source

Observation of vibrating systems at different time instants

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
In this paper, we obtain new observability inequalities for the vibrating string. This work was motivated by a recent paper of A. Szijártó and J.
Ambroise Vest
doaj   +1 more source

Home - About - Disclaimer - Privacy