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Статті в журналах з теми "Approche basée sur les fonctions de Lyapunov":
Lamraoui, Lazhar, Rebiai Cherif, and Benlahmidi Said. "Élément quadrilatéral basé sur la déformation pour la flexion de plaques." Journal of Engineering and Exact Sciences 9, no. 9 (November 10, 2023): 17318–01. http://dx.doi.org/10.18540/jcecvl9iss9pp17318-01e.
Boungou Bazika, Jean-Christophe. "Essai de définition et fonctionnalité de l’entreprise familiale dans une perspective africaine." Revue internationale P.M.E. 18, no. 3-4 (February 16, 2012): 11–30. http://dx.doi.org/10.7202/1008480ar.
HADJEM, Madjd, and SI-MOHAMMED Djamal. "Petites villes, fonctions urbaines et organisation de l’espace: analyse à travers le cas de la fonction commerciale de la ville d’Azazga dans la wilaya de Tizi-Ouzou." Dirassat Journal Economic Issue 5, no. 2 (June 1, 2014): 108–43. http://dx.doi.org/10.34118/djei.v5i2.526.
Asiedu-Akrofi, Derek. "Central Bank Immunity and the Inadequacy of the Restrictive Immunity Approach." Canadian Yearbook of international Law/Annuaire canadien de droit international 28 (1991): 263–307. http://dx.doi.org/10.1017/s0069005800004136.
Oswaldo Montero Gómez. "Pedagogía orientada desde la modificabilidad cognitiva estructural en riesgos psicosociales de jóvenes en la post-pandemia." GACETA DE PEDAGOGÍA, no. 45 (April 30, 2023): 113–33. http://dx.doi.org/10.56219/rgp.vi45.1834.
Dominique, Richard. "L'ethnohistoire de la Moyenne-Côte-Nord." Articles 17, no. 2 (April 12, 2005): 189–220. http://dx.doi.org/10.7202/055714ar.
Дисертації з теми "Approche basée sur les fonctions de Lyapunov":
Zekraoui, Salim. "Contrôle et estimation en temps fini de certaines classes d'EDP." Electronic Thesis or Diss., Centrale Lille Institut, 2023. http://www.theses.fr/2023CLIL0028.
This Ph.D. thesis is devoted to the problems of non-asymptotic (finite, fixed, prescribed-time) estimation and stabilization of some classes of infinite-dimensional systems, namely LTI systems subject to input/sensor (pointwise or distributed) delays and reaction-diffusion PDEs. As the existing results on these classes of systems are few, we begin by reviewing relevant concepts and results on non-asymptotic tools (including homogeneity-based tools and time-varying tools) for finite-dimensional systems. Afterward, we extend these tools to infinite-dimensional settings. Firstly, we start with the problem of input and sensor delay compensation in finite/fixed/prescribed time of LTI systems where we use the so-called backstepping approach for PDEs (with some nonlinear and/or time-varying invertible transformations). To apply this approach, we reformulate the considered LTI system into a cascade ODE-PDE system where the PDE part is a hyperbolic transport equation that models the effect of the delay on the input/output. Secondly, we consider the problem of boundary state-dependent finite/fixed-time stabilization of reaction-diffusion PDEs. To the best of our knowledge, this problem has remained open in the literature for a considerable long time. We tackle this challenging problem using classical methods related to Control Lyapunov functions. We provide some hints on how we to extend this approach to input-to-state stabilization and non-asymptotic tracking problem for reaction-diffusion PDEs. We point out the limitations of our approach to observer design. Finally, we tackle the problem of input delay compensation of reaction-diffusion systems in prescribed time by output feedback using the backstepping approach. This problem is challenging, as one deals with observer and control designs with some time-varying gains that go to infinity when the time gets closer to the prescribed time of convergence, which brings additional challenges and issues. Dealing with these challenges requires introducing novel infinite-dimensional time-varying backstepping transformations in conjunction with advanced predictor-based concepts adapted to parabolic PDEs
Hourieh, Abdullah. "Approche géométrique basée sur des fonctions de coordination pour la marche dynamique d'un bipède." Versailles-St Quentin en Yvelines, 2009. http://www.theses.fr/2009VERS0007.
In this thesis, a 3d dynamic walking gait of a mockup is proposed. The walking strategy is based on elementary coordination functions in the sagittal and frontal planes, in the simulation environment "ADAMS". The study starts by establishing coordination functions to generate the oscillation movement of the mockup in the frontal plane. The determination of some essential factors of the walk movement is obtained from human walking analysis. A leg lifting and a pelvis rotation are added to the oscillation movement to realize a first walking type. Increasing the step length has been done by a new configuration with legs being outside the pelvis plane and via the flexions of those legs. Finally, an energetic approach is proposed to enhance the walking stability of the biped system
Nguyen, Thi Van Anh. "Commande de robots manipulateurs basée sur le modèle de Takagi-Sugeno : nouvelle approche pour le suivi de trajectoire." Thesis, Valenciennes, Université Polytechnique Hauts-de-France, 2019. http://www.theses.fr/2019VALE0030/document.
This work presents a new design approach for trajectory tracking control of robot manipulators. In spite of the rich literature in the field, the problem has not yet been addressed adequately due to the lack of an effective control design. In general, it is difficult to adopt design to achieve high-precision tracking control due to the uncertainties in practical applications, such as friction forces, external disturbances and parameter variations. In order to cope this problem, we propose first control with H∞ performance to reference trajectory tracking control of two degrees of freedom robot. Secondly, we propose a new design framework with parametric uncertainties and unknown disturbances by using the feedback and the feedforward controllers. Using the descriptor Takagi-Sugeno systems, the design goal is to achieve a guaranteed tracking performance while signicantly reducing the numerical complexity of the designed controller through a robust control scheme. Based on Lyapunov stability theory, the control design is formulated as an LMI (linear matrix inequality) optimization problem. Simulation results carried out with a high-fidelity serial manipulator model embedded in the Simscape MultibodyTM environment of MatlabR clearly demonstrate the effectiveness of the proposed method by comparing with PID controller and computed torque controller
L'Héritier, Cécile. "Une approche de retour d’expérience basée sur l’analyse multicritère et l’extraction de connaissances : Application au domaine humanitaire." Thesis, Nîmes, 2020. http://www.theses.fr/2020NIME0001.
Because of its critical impacts on performance and competitivity, organizations’ knowledge is today considered to be an invaluable asset. In this context, the development of methods and frameworks aiming at improving knowledge preservation and exploitation is of major interest. Within Lessons Learned framework – which proposes relevant methods to tackle these challenges –, we propose to work on an approach mixing Knowledge Representation, Multiple-Criteria Decision Analysis and Inductive Reasoning for inferring general learnings by analyzing past experiences. The proposed approach, which is founded on a specific case-based reasoning, intends to study the similarities of past experiences – shared features, patterns – and their potential influence on the overall success of cases through the identification of a set of criteria having a major contribution on this success. For the purpose of highlighting this potential causal link to infer general learnings, we envisage relying on inductive reasoning techniques. The considered work will be developed and validated through the scope of a humanitarian organization, Médecins Sans Frontières, with a focus on the logistical response in emergency situations