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Affichage de 571 à 580 sur 5533

Article dans une revue

Time scale reachability and controllability of time‐varying linear systems

Bacem Ben Nasser, Mohamed Djemai, Michael Defoort, Taous‐meriem Laleg-Kirati

In this paper, we investigate the analysis of reachability and controllability for time-varying linear systems evolving on nonuniform time domains also known as arbitrary time scales. Based on appropriate operators, some necessary and sufficient conditions are derived to guarantee the reachability...

Asian Journal of Control, 2022, 24 (5), pp.2074-2088. ⟨10.1002/asjc.2661⟩. ⟨hal-03969319⟩

Article dans une revue

Membership Functions Integration Approach for State Feedback Control of T-S Fuzzy Systems

Wen-Bo Xie, Bo-Lin Xu, Chen Peng, Anh-Tu Nguyen

For the stability analysis problem of a T-S fuzzy system, a membership functions integration-based method is proposed to relax the existing conservatism. Firstly, indefinite integral functions are derived for the membership functions. Then with a piecewise linear approximation approach, the...

International Journal of Fuzzy Systems, 2022, 24 (6), pp.2931-2945. ⟨10.1007/s40815-022-01309-9⟩. ⟨hal-04278855⟩

Article dans une revue

Adaptive robust finite-time tracking control for quadrotor subject to disturbances

Yakoub Nettari, Moussa Labbadi, Serkan Kurt

Quadrotors are extremely agile UAVs with many unknowns regarding their moment of inertia, drag coefficients, and mass. Aside from aerodynamic turbulence, the quadrotor has a high level of nonlinearity due to its underactuated mechanical system. These last two factors cause issues that necessitate...

Advances in Space Research, 2022, 71 (1), pp.3803-3821. ⟨10.1016/j.asr.2022.09.016⟩. ⟨hal-03809801⟩

Article dans une revue

Zonotopic observer designs for uncertain Takagi–Sugeno fuzzy systems

Masoud Pourasghar, Tran Anh-Tu Nguyen, Thierry-Marie Guerra

This paper addresses the zonotopic observer design for nonlinear systems affected by uncertainties, i.e., state disturbances and measurement noises using Takagi–Sugeno (TS) fuzzy technique. The system uncertainties are considered as unknown but bounded, which are handled via a set-membership...

Engineering Applications of Artificial Intelligence, 2022, 114, pp.105126. ⟨10.1016/j.engappai.2022.105126⟩. ⟨hal-04278847⟩

Communication dans un congrès

Principes et potentialités du test de formabilité à hautes températures EFForT : étude de la forgeabilité de l’Inconel 625

Jean-Dominique Guerin, Camille Durand, Philippe Moreau, Ludovic Freund, José La Barbera, Eli Puchi Cabrera, Régis Bigot, Laurent Dubar

En mise en forme à chaud, la rhéologie du produit –la pièce– et la tribologie au sens des conditions de contact et d’interfaces outils/pièce sont fortement couplées et conditionnent directement la performance du procédé et la qualité du produit. La forte non-linéarité des phénomènes mis en jeu rend...

25e Congrès Français de Mécanique (CFM 2022), Centrale Nantes; Université de Nantes; ENSAM d'Angers; Ecole Navale de Brest; Université de La Rochelle, Aug 2022, Nantes, France. ⟨hal-04280151⟩

Communication dans un congrès

Adaptive coupled discrete/continuous approach for the forming of materials

Farouk Yahya, Cédric Hubert, Nicolas Leconte, Laurent Dubar

During the manufacturing process of train wheels, industries encounter limitations to study the fatigue cracking problem with the finite element method (FEM). Another method, the discrete element method (DEM), is more adapted to study these types of problems, but it is very expensive. This paper..., La méthode des éléments finis présente des limitations pour évaluer la fissuration par fatigue des outils de mise en forme (roues de train). La méthode des éléments discrets est plus adaptée à cette catégorie de problème, mais elle est très coûteuse. Le papier présente une stratégie permettant de...

14th International Conference on Computational Structures Technology, Aug 2022, Montpellier, France. ⟨hal-03878991⟩

Article dans une revue

Surface Inspection and Description in Metrology and Tribology—Vol.1

Michal Wieczorowski, Maxence Bigerelle, Chris Brown, Pawel Pawlus, Rafal Reizer, Alejandro Pereira

The primary goal of this Special Issue was to present recent trends in surface inspection and description, from both metrological and tribological points of view [...]

Materials, 2022, 15 (16), pp.5636. ⟨10.3390/ma15165636⟩. ⟨hal-04489067⟩

Pré-publication, Document de travail

Visual Secrets : A recognition-based security primitive and its use for boardroom voting

Enka Blanchard, Sébastien Bouchard, Ted Selker

This paper presents and evaluates a new security primitive in the form of non-transferable ``visual secrets''. We show how they can be used in the design of voting systems. More specifically, we introduce a receipt-free low-tech visually verifiable boardroom voting system which is built...

2022. ⟨hal-03133412v3⟩

Article dans une revue

The rehabilitation robot: factors influencing its use, advantages and limitations in clinical rehabilitation.

Nawel Ouendi, Remy Hubaut, Sylvie Pelayo, Françoise Anceaux, Laura Wallard

Purpose Despite the proven effectiveness of rehabilitation robots (RR) in the literature, they are still little used in clinical rehabilitation. The aim of this study was to analyse the factors influencing the use of RR and the perception of therapists who used RR. Method In order to characterize...

Disability and Rehabilitation: Assistive Technology, 2022, Disability and Rehabilitation: Assistive Technology, pp.1-12. ⟨10.1080/17483107.2022.2107095⟩. ⟨hal-04546763⟩

Article dans une revue

Time scale observability and constructibility of linear dynamic equations

Bacem Ben Nasser, Mohamed Djemai, Michael Defoort, Taous-Meriem Laleg-Kirati

This paper investigates the observability and constructibility problems of time-varying linear dynamic equations using time scale theory. First, we define observability, reachability and constructibility operators on time scales. Some necessary and sufficient conditions are proposed to ensure the...

International Journal of Control, 2022, 95 (8), pp.1994-2004. ⟨10.1080/00207179.2021.1890823⟩. ⟨hal-03969245⟩