Academic literature on the topic 'Systèmes hamiltoniens à port'
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Journal articles on the topic "Systèmes hamiltoniens à port"
Lesfari, A. "Systèmes hamiltoniens complètement intégrables." Aequationes mathematicae 82, no. 1-2 (May 17, 2011): 165–200. http://dx.doi.org/10.1007/s00010-011-0078-x.
Full textCresson, Jacky. "Temps d'instabilité des systèmes hamiltoniens initialement hyperboliques." Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 332, no. 9 (May 2001): 831–34. http://dx.doi.org/10.1016/s0764-4442(01)01920-6.
Full textMathlouthi, Salem. "Bifurcation d'orbites homoclines pour les systèmes hamiltoniens." Annales de la faculté des sciences de Toulouse Mathématiques 1, no. 2 (1992): 211–36. http://dx.doi.org/10.5802/afst.746.
Full textTimoumi, Mohsen. "Solutions périodiques de systèmes hamiltoniens convexes non coercitifs." Bulletin de la Classe des sciences 75, no. 1 (1989): 463–81. http://dx.doi.org/10.3406/barb.1989.57866.
Full textBrousseau, V. "Espaces de Krein et index des systèmes hamiltoniens." Annales de l'Institut Henri Poincare (C) Non Linear Analysis 7, no. 6 (November 1990): 525–60. http://dx.doi.org/10.1016/s0294-1449(16)30280-3.
Full textEkeland, I., and L. Lassoued. "Multiplicité des trajectoires fermées de systèmes hamiltoniens connexes." Annales de l'Institut Henri Poincare (C) Non Linear Analysis 4, no. 4 (July 1987): 307–35. http://dx.doi.org/10.1016/s0294-1449(16)30362-6.
Full textAmmar, F. "Systèmes hamiltoniens complètement intégrables et déformations d'algèbres de Lie." Publicacions Matemàtiques 38 (July 1, 1994): 427–31. http://dx.doi.org/10.5565/publmat_38294_11.
Full textMontaldi, James. "Persistance d’orbites périodiques relatives dans les systèmes hamiltoniens symétriques." Comptes Rendus de l'Académie des Sciences - Series I - Mathematics 324, no. 5 (March 1997): 553–58. http://dx.doi.org/10.1016/s0764-4442(99)80389-9.
Full textBeauville, Arnaud. "Jacobiennes des courbes spectrales et systèmes hamiltoniens complètement intégrables." Acta Mathematica 164 (1990): 211–35. http://dx.doi.org/10.1007/bf02392754.
Full textMewoli, Boulchard, and Boniface Razafimandimby. "Approximation de cycles limites de ℝ2-systèmes équivariants hamiltoniens perturbés." Bulletin de la Classe des sciences 75, no. 1 (1989): 78–84. http://dx.doi.org/10.3406/barb.1989.57822.
Full textDissertations / Theses on the topic "Systèmes hamiltoniens à port"
Medianu, Silviu. "Identification des systèmes hamiltoniens à ports." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT116/document.
Full textThe objective of this thesis is to develop a specific identification theory for Port Controlled Hamiltonian (PCH) systems. The main reasons to develop this theory comes from their remarkable properties like power conservation and stability under power preserving interconnection (e.g. parallel, series or feedback interconnections). In a first part PCH systems are analysed for structural identifiability using some classical or new techniques: observability/controllability identifiability, direct test, power series expansion or a new power energy approach, defining also a new concept of port identifiability. Further it is proposed a perturbation model by means of the interaction port together with a practical identifiability analysis realized using the controllability and observability concepts. The fourth part presents a new framework for time-discretization of PCH systems in the nonlinear or linear case, by combined discretization of the flows and efforts preserving in the same time their characteristic properties. Also in this part it is proposed a discretization error Hamiltonian to distinguish the continuous-time PCH system from the discrete-time one. The fifth part of the thesis makes an analysis of PCH systems identifiability using the subspace identification approach in the deterministic case, proposing also a new power energy approach in direct connection with the structural identifiability results. In the end are presented the main conclusions, personal contributions and perspectives for future work
Mokhtari, Fouad. "Commande des systèmes Hamiltoniens à ports commandés : application aux systèmes multimachines." Thèse, Université du Québec à Trois-Rivières, 2010. http://depot-e.uqtr.ca/1251/1/030161514.pdf.
Full textRamirez, Estay Hector. "Control of irreversible thermodynamic processes using port-Hamiltonian systems defined on pseudo-Poisson and contact structures." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10033/document.
Full textThis doctoral thesis presents results on the use of port Hamiltonian systems (PHS) and controlled contact systems for modeling and control of irreversible thermodynamic processes. Firstly, Irreversible PHS (IPHS) has been defined as a class of pseudo-port Hamiltonian system that expresses the first and second principle of Thermodynamics and encompasses models of heat exchangers and chemical reactors. These IPHS have been lifted to the complete Thermodynamic Phase Space endowed with a natural contact structure, thereby defining a class of controlled contact systems, i.e. nonlinear control systems defined by strict contact vector fields. Secondly, it has been shown that only a constant control preserves the canonical contact structure, hence a structure preserving feedback necessarily shapes the closed-loop contact form. The conditions for state feedbacks shaping the contact form have been characterized and have lead to the definition of input-output contact systems. Thirdly, it has been shown that strict contact vector fields are in general unstable at their zeros, hence the condition for the the stability in closed-loop has been characterized as stabilization on some closed-loop invariant Legendre submanifolds
Yaghi, Mohammed. "Phase Field Modeling of Water Solidification : A Port-Hamiltonian Approach." Electronic Thesis or Diss., Lyon 1, 2024. http://www.theses.fr/2024LYO10198.
Full textThis thesis presents a study on modeling, formulating, and discretizing solidification processes using the Port Hamiltonian framework combined with the phase field approach. The goal is to provide numerical models suitable for simulating, designing, and controlling such processes. It addresses the challenges of representing and controlling phase change phenomena in distributed parameter models with moving interfaces, with a particular focus on the solidification of pure water. The work has been motivated by the development of green processes for water purification technologies such as cyclic melt and crystallization of water, which offer a low-energy solution while minimizing the use of hazardous materials. The first chapter recalls briefly the physical models of multiphase systems and the description of the interface between the phases, in terms of thin or diffuse interfaces. It presents the phase field theory and the associated thermodynamical models of the multiphase systems. Finally, it expresses the dynamics of solidification processes as a coupled system of evolution equations consisting of the Allen-Cahn equation and energy balance equations. A main contribution of this chapter consists in a comprehensive presentation of solidification using the entropy functional approach within the phase field framework. In the second chapter, the Port Hamiltonian formulation of the dynamics of solidification processes using the phase field approach is developed. This chapter introduces Boundary Port Hamiltonian Systems and shows how an extension of the state space to the gradient of the phase field variable leads to a Port Hamiltonian formulation of the solidification model. The model is written in such a way that it utilizes the available thermodynamic data for liquid water and ice, allowing for a detailed and physically-based modeling, leading to an implicit Boundary Port Hamiltonian model. The final chapter focuses on the structure-preserving discretization of the solidification process using the Partitioned Finite Element Method. This ensures that the discretized model retains the Port Hamiltonian structure and, in turn, the key properties such as energy conservation and passivity. The chapter covers weak formulations, projections, and discrete Hamiltonians for the heat equation and the Allen-Cahn equation, leading to the spatial discretization of the solidification model. The principal contribution of this chapter lies in the discretization methodology applied to the implicit Port Hamiltonian model of the solidification process using entropy as the generating function. Overall, this thesis provides structured models of solidification processes using the Port Hamiltonian framework, providing a foundation for their physics-based simulation and control and for future research and development in distributed parameter systems with moving interfaces, particularly for environmental and chemical engineering applications
Ramirez, Estay Hector. "Commande de systèmes thermodynamiques irréversibles utilisant les systèmes Hamiltoniens à port définis sur des pseudo-crochets de Poisson et des structures de contact." Phd thesis, Université Claude Bernard - Lyon I, 2012. http://tel.archives-ouvertes.fr/tel-00866011.
Full textRomero, Velázquez José Guadalupe. "Commande robuste par façonnement d’énergie de systèmes non-linéaires." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112019/document.
Full textThis thesis focuses on the design of robust control for nonlinear systems, mainly on mechanical systems. The results presented are to two situations widely discussed in control theory: 1) The stability of nonlinear systems disturbed; 2) The global tracking trajectory in mechanical systems having only knowledge of the position. We started giving a design method of robust controls to ensure regulation on non-passive output. In addition, if the system is perturbed (constant unmatched), rigorous proof to its rejection is provided. This result is based mainly on change of coordinates and integral dynamic control. When the scenario to deal are mechanical systems with time-varying matched and unmatched, disturbance, the system is endowed with strong properties as IISS (Integral Input-State Stable) and ISS (Input-State Stable). This is achieved based on the design method to rejection of constant disturbances (unmatched). However, due to the nonlinearity of the system, the controllers have a high complexity. For the same problem, a second and elegant result is given making a initial change of coordinate on the momenta variable, such that the controller significantly simplifies, preserving the aforementioned robustness properties. Finally, a convincing answer to the problem of global exponential tracking of mechanical systems is given taking into account only the position information. We solve this problem in two steps. First, some slight variation is presented to the proof of stability of a speed observer based on Immersion and Invariance theory recently published. Note that this is a speed observer satisfying the exponential convergence speed in mechanical systems. Secondly, and based on the change of coordinates (momenta), a globally exponentially stable tracking controller with position and velocity known is proposed. The combination of both results give the first global exponential tracking controller of mechanical systems without velocity measurements
Chera, Catalin-Marian. "Contribution à l'extension de l'approche énergétique à la représentation des systèmes à paramètres distribués." Phd thesis, Ecole Centrale de Lille, 2009. http://tel.archives-ouvertes.fr/tel-00578842.
Full textChorot, Thierry. "Modélisation commande et observation des systèmes mécaniques hamiltoniens : application à un pont roulant." Lyon 1, 1991. http://www.theses.fr/1991LYO10200.
Full textTrenchant, Vincent. "Discrétisation et commande frontière de systèmes vibro-acoustiques, une approche hamiltonienne à ports." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCD066/document.
Full textThis thesis deals with the boundary control of an acoustic by a network of co-localised sensors/actuators which constitutes a smart skin. In order to cope with this multiphysical problem, we chose to place our study in the framework of port-Hamiltonian systems, a structured approach based on the representation of energy exchanges between different energy domains between different systems of subsystems. We proposed a port-Hamiltonian model of the wave equation interconnected through its boundary to the distributed actuation system, which corresponds to a 2D formulation of the physical problem. We developed a spatial discretization method based on the use of finite differences on several staggered grids that preserve the port-Hamiltonian structure of the wave equation. This method also permits to easily interconnect the discretized system with other subsystems, which is convenient for instance for control purposes. Its main advantage over other structure preserving methods is its simplicity of implementation which stems from the use of finite differences. In order to control the vibro-acoustic system, we proposed a control law synthesis method for systems governed by two conservation laws in 1D. The originality of this method lies in the fact that it relies on the computation of structural invariants (Casimir functions) exploited in order to modify the structure of the system in closed loop. The conditions of application of these laws on a 2D system are studied and numerical results validate the synthesized control laws
Pham, Thanh Hung. "Commande optimale sous contraintes pour micro-réseaux en courant continu." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT086/document.
Full textThe goals of this thesis is to propose modelling and control solutions for the optimal energy management of a DC microgrid under constraints. The studied microgrid system includes electrical storage units (e.g., batteries, supercapacitors), renewable sources (e.g., solar panels) and loads (e.g., an electro-mechanical elevator system). These interconnected components are linked to a three phase electrical grid through a DC bus and associated DC/AC converters. The optimal energy management is usually formulated as an optimal control problem which takes into account the system dynamics, cost, constraints and reference profiles.An optimal energy management for the microgrid is challenging with respect to classical control theories. Needless to say, a DC microgrid is a complex system due to its heterogeneity, distributed nature (both spatial and in sampling time), nonlinearity of dynamics, multi-physic characteristics, the presence of constraints and uncertainties. Moreover, the power-preserving structure and the energy conservation of a microgrid are essential for ensuring a reliable operation.This challenges are tackled through the combined use of port-Hamiltonian formulations, differential flatness, and economic Model Predictive Control.The Port-Hamiltonian formalism allows to explicitly describe the power-preserving structure and the energy conservation of the microgrid and to connect different components of different physical natures through the same formalism. The strongly non-linear system is then translated into a flat representation. Taking into account differential flatness properties, reference profiles are generated such that the dissipated energy and various physical constraints are taken into account. Lastly, we minimize the purchasing/selling electricity cost within the microgrid using the economic Model Predictive Control with the Port-Hamiltonian formalism on graphs.The proposed control designs are validated through simulation results
Books on the topic "Systèmes hamiltoniens à port"
Chowdhury, Roy. Quantum Integrable Systems. [Place of publication not identified]: Chapman & Hall, 2004.
Find full textCRM Workshop on Hamiltonian Systems, Transformation Groups and Spectral Transform Methods (1989 Université de Montréal). Proceedings of the CRM Workshop on Hamiltonian Systems, Transformation Groups and Spectral Transform Methods. Montréal, QC: Les publications CRM, 1990.
Find full text1944-, Albert C., ed. Géometrie symplectique et mécanique: Colloque international, la Grande Motte, France, 23-28 Mai, 1988. Berlin: Springer-Verlag, 1989.
Find full textC, Albert, and Colloque International du Séminaire Sud-Rhodanien de Géométrie, (5th : 1988 : La Grand Motte), eds. Géométrie symplectique et mécanique: Colloque international, La Grand Motte, 23-28 mai, 1988. Berlin: Springer, 1990.
Find full text1923-, Sáenz Albert William, Zachary W. W. 1935-, Cawley R. 1936-, and Naval Surface Weapons Center, eds. Local and global methods of nonlinear dynamics: Proceedings of a workshop held at the Naval Surface Weapons Center, Silver Spring, MD, July 23-26, 1984. Berlin: Springer-Verlag, 1986.
Find full text1969-, Schlag Wilhelm, ed. Invariant manifolds and dispersive Hamiltonian evolution equations. Zürich, Switzerland: European Mathematical Society, 2011.
Find full textMielke, Alexander. Hamiltonian and Lagrangian flows on center manifolds: With applications to elliptic variational problems. Berlin: Springer-Verlag, 1991.
Find full textAudin, Michele. Les Systemes Hamiltoniens Et Leur Integrabilite. Societe Mathematique De France, 2001.
Find full textMorse Theory for Hamiltonian Systems. Chapman & Hall/CRC, 2001.
Find full textAbbondandolo, Alberto. Morse Theory for Hamiltonian Systems. Taylor & Francis Group, 2001.
Find full textBook chapters on the topic "Systèmes hamiltoniens à port"
Boucetta, Mohamed. "Géometrie Globale des Systèmes Hamiltoniens Complètement Intégrables et Variables Action-Angle avec Singularités." In Mathematical Sciences Research Institute Publications, 13–22. New York, NY: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4613-9719-9_2.
Full text"13 Systèmes hamiltoniens." In Variétés différentielles, physique et invariants topologiques, 315–48. EDP Sciences, 2023. http://dx.doi.org/10.1051/978-2-7598-3143-2.c014.
Full textAdopo, Aimé Achi. "Des difficultés en expression orale en français des apprenants de zone rurale ivoirien : spécificités et remédiation." In L’enseignement-apprentissage en/des langues européennes dans les systèmes éducatifs africains : place, fonctions, défis et perspectives, 277–96. Observatoire européen du plurilinguisme, 2020. http://dx.doi.org/10.3917/oep.kouam.2020.01.0277.
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