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Affichage de 891 à 900 sur 2051

Article dans une revue

Numerical Analysis of the Impact of Nanofluids and Vapor Grooves Design on the Performance of Capillary Evaporators

Riadh Boubaker, Souad Harmand, Vincent Platel

This paper discusses the impact of nanofluids and vapor grooves position on the performance of capillary evaporators. The phase change that occurs within the wick structure is simulated using a 2D transient mathematical model. The model combines Darcy’s law, Langmuir’s law, and energy equations to...

Transport in Porous Media, 2018, 122 (2), pp.401-419. ⟨10.1007/s11242-018-1015-4⟩. ⟨hal-02129465⟩

Article dans une revue

Fixed-Time Consensus Tracking for Multiagent Systems With High-Order Integrator Dynamics

Zongyu Zuo, Bailing Tian, Michael Defoort, Zhengtao Ding

This paper addresses the fixed-time leader-follower consensus problem for high-order integrator multiagent systems subject to matched external disturbances. A new cascade control structure, based on a fixed-time distributed observer, is developed to achieve the fixed-time consensus tracking control...

IEEE Transactions on Automatic Control, 2018, 63 (2), pp.563-570. ⟨10.1109/TAC.2017.2729502⟩. ⟨hal-03428120⟩

Article dans une revue

Fuzzy unknown input observer for understanding sitting control of persons living with spinal cord injury

Mathias Blandeau, Víctor Estrada Manzo, Thierry-Marie Guerra, Philippe Pudlo, François Gabrielli

The present paper introduces a simple model to study sitting control for persons with complete thoracic spinal cord injury. The system is obtained via Lagrangian techniques; this procedure leads to a nonlinear descriptor form, which can be written as a TakagiSugeno model. A first attempt to...

Engineering Applications of Artificial Intelligence, 2018, 67, pp.381-389. ⟨10.1016/j.engappai.2017.09.016⟩. ⟨hal-03428425⟩

Article dans une revue

Réseau bayésien pour la gestion de l’obsolescence dans une base d’informations en vue de l’évaluation du risque de chute des personnes âgées

Salma Chaieb, Véronique Delcroix, Ali Ben Mrad, Emmanuelle Grislin-Le Strugeon

L’évaluation périodique du risque de chute des personnes âgées requiert des informations fiables et nombreuses. Comme il n’est pas possible de recueillir régulièrement toutes ces informations, les observations sont faites au fil du temps et conservées, ce qui entraîne une problématique liée au...

Revue des Nouvelles Technologies de l'Information, 2018, pp.359-364. ⟨hal-03403027⟩

Article dans une revue

Mesh Twisting Technique for Swirl Induced Laminar Flow Used to Determine a Desired Blade Shape

Asdis Helgadottir, Sylvain Lalot, François Beaubert, Halldor Pálsson

Swirling flow has been shown to increase heat transfer in heat exchangers. However, producing swirl while not presenting a severe pressure drop can be a challenge. In this paper, a desired shape of guidance blades for laminar swirl flow is determined by numerical simulation in OpenFOAM. Emphasis is...

Applied Sciences, 2018, 8 (10), pp.1865. ⟨10.3390/app8101865⟩. ⟨hal-03449889⟩

Article dans une revue

Implementing advanced Takagi-Sugeno controllers: application to throttle control of a gasoline engine

Thomas Josso-Laurain, Jimmy Lauber, Reinaldo Martinez Palhares

This paper is dedicated to the implementation process of advanced Takagi-Sugeno controllers. The considered application is the control of the throttle of a gasoline engine running at idle speed. In order to design a model-based control, a model is first obtained and identified with an engine test...

IFAC-PapersOnLine, 2018, 51 (10), pp.145-150. ⟨10.1016/j.ifacol.2018.06.252⟩. ⟨hal-03675878⟩

Article dans une revue

Razumikhin-type Theorems on Practical Stability of Dynamic Equations on Time Scales

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

In this work, we investigate some Razumikhin-type criteria for the uniform global practical asymptotic stability on arbitrary time domains, for time-varying dynamic equations. Using Lyapunov-type functions on time scales, we develop appropriate inequalities ensuring that trajectories decay to the...

IFAC-PapersOnLine, 2018, 51 (16), pp.121-126. ⟨10.1016/j.ifacol.2018.08.021⟩. ⟨hal-03671746⟩

Article dans une revue

High performance LDPC codes for high spectral efficiency

Latifa Mostari, Abdelmalik Taleb-Ahmed, Abdennacer Bounoua

Achieving high spectral efficiency is the key requirement of future wireless systems and mobile communications because it provides us a high quality for high data over a limited bandwidth. In order to achieve high spectral efficiency, channel coding and modulation are the key part. Basically, high...

Internetworking Indonesia Journal, 2018, 10 (1), pp.9-15. ⟨hal-03676514⟩

Article dans une revue

LMI-Based Exponential Estimates for Time-Delay Nonlinear Descriptor Systems ⁎ ⁎This work has been supported by the postdoctoral fellowship for CVU 366627, the ITSON Projects PROFAPI CA-18 2017-0088 and 2018-1062, and PFCE 2016-17. Juan Carlos Arceo was student at ITSON under CONACYT scholarship 415714 during the realization of this work.

Juan Carlos Arceo Luzanilla, Raúl Villafuerte, Víctor Estrada Manzo, Miguel Bernal

This paper presents novel results on exponential estimates for time-delay nonlinear descriptor systems with nonsingular left-hand side. By means of a Lyapunov-Krasovskii functional and an exact convex representation of the system, conditions in the form of linear matrix inequalities are found that...

IFAC-PapersOnLine, 2018, 51 (10), pp.139-144. ⟨10.1016/j.ifacol.2018.06.251⟩. ⟨hal-03671715⟩

Article dans une revue

An Incremental Physically-Based Model of P91 Steel Flow Behaviour for the Numerical Analysis of Hot-Working Processes

Alberto Murillo-Marrodán, Eli Saúl Puchi-Cabrera, Eduardo Garcia, Mirentxu Dubar, Fernando Cortes, Laurent Dubar

This paper is aimed at modelling the flow behaviour of P91 steel at high temperature and a wide range of strain rates for constant and also variable strain-rate deformation conditions, such as those in real hot-working processes. For this purpose, an incremental physically-based model is proposed...

Metals, 2018, 8 (4), pp.269. ⟨10.3390/met8040269⟩. ⟨hal-03450069⟩