Дисертації з теми "Systèmes de contrôle distribués"
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Felicioni, Flavia. "Stabilité et performance des systèmes distribués de contrôle-commande." Thesis, Vandoeuvre-les-Nancy, INPL, 2011. http://www.theses.fr/2011INPL013N/document.
The main contributions of this thesis are related to the analysis, synthesis and design of control systems sharing communication and computational resources. The research focuses on control systems where the feedback loops are closed over communication networks which transmit the information provided to its nodes by sensors, actuators and controllers. The shared resource in this scenario is the network. Some of the results are valid when the resource is a processor locally placed respect to several controller executing their algorithms on it. In any of the preceding scenarios, the control loops must contend for the shared resource. The limited capacity of the resource can cause delays and packet losses when information is transmitted. These effects can degrade the control system performance and even destabilize it.The first part of this thesis contributes to the performance analysis of specific classes of systems and to the design of robust controllers for network characteristics modeled by Quality of Service parameters. A series of methods to assist the control systems engineer are provided.In the second part, a contribution to the CoDesign approach is made via the integration of control system synthesis and design techniques with rules allowing to define the communication policy to manage real-time tasks sharing a limited resource. Putting in correspondence a scheduling of instances of the controller tasks with their sampling periods, the proposed policy results in discrete-time varying systems. The stabilization problem of these systems is solved with methods based on the solvability of Lie-algebras. Specifically, the proposed methodology provides adaptive controllers
Yakoubi, Youssef. "Deux Méthodes d'Approximation pour un Contrôle Optimal Semi-Décentralisé pour des Systèmes Distribués." Phd thesis, Université de Franche-Comté, 2010. http://tel.archives-ouvertes.fr/tel-00565898.
Lerman, Benjamin. "Vérification et Spécification des Systèmes Distribués." Phd thesis, Université Paris-Diderot - Paris VII, 2005. http://tel.archives-ouvertes.fr/tel-00322322.
On s'intéresse ensuite à la modélisation des systèmes concurrents, en recherchant à nouveau un compromis entre réalisme des modèles et facilité de vérification. Les modèles étudiés dans ce travail sont les automates asynchrones, qui modélisent des processus concurrents communiquant par mémoire partagée.
La thèse s'intéresse enfin au problème de la synthèse de contrôleur. Étant donné un système spécifié de façon incomplète, donc non-déterministe, en interaction avec un environnement, il s'agit de calculer de manière automatique comment restreindre son comportement afin qu'il vérifie une spécification donnée (quelles que soient les actions de l'environnement). Ce problème se formule en
termes de jeux. Dans le cas distribué, les jeux ont naturellement plusieurs joueurs. Dans ce cadre, la plupart des résultats sont négatifs : il est indécidable de savoir si on peut ou non contrôler un tel système. Cette thèse prouve que certaines propriétés de l'architecture de communication garantissent décidabilité pour toute spécification régulière.
Bournez, Carine. "Une architecture multi-agents réflexive pour le contrôle de systèmes de production distribués hétèrogènes." Lyon, INSA, 2001. http://www.theses.fr/2001ISAL0040.
In order to control new production organizations composed of autonomous entities, we propose an approach that avoids any structure modeling. Indeed, the study of networked enterprises, particularly from an organizational evolution point of view, shows that dynamic structure is one of their essential in trin sic features. The goal of this work is to define a multi-agent architecture, based on a contract net protocol, for distributed dynamic production systems control. Using an emergentist methodology in its conception goes against sorne preconceived ideas about agents identification with physical entities of the organization. Our architecture allows to integrate different parts of the distributed system thanks to the contract net protocol. A reflexive agent architecture supplements this system. The meta controls the behaviors of the agents of the network, and also their ability to learn. Learning relies on several partial behaviors acquisitions, thus on synchronization between agents at the metalevel. The mechanism is a case-based learning engine, with XML case representation. The multi-agent contract net and the reflexive architecture have been implemented in a simulation framework called OCEAN. It is written in Java language, over the MadKit multi-agent platform. It allows to develop simulations from relatively little refined data about production system entities. For this purpose, we propose a simulation methodology using this framework
AL-SAPHORY, Raheam. "Analyse régionale asymptotique d'une classe de systèmes distribués." Phd thesis, Université de Perpignan, 2001. http://tel.archives-ouvertes.fr/tel-00001481.
Alaya, Bechir. "Gestion de qualité de la service dans les systèmes multimédia distribués." Le Havre, 2012. http://www.theses.fr/2012LEHA0015.
Multimedia applications manage great quantities of data, whose exploitation must respect temporal constraints in order to read the video packets without interruption. Considering the similarities existing between multimedia applications and Real-Time Databases Systems (RTDBSs), we proposed an approach which consists of adapting researches done on quality of service (QoS) management in RTDBSs to distributed multimedia systems. We present a method to control QoS of distributed multimedia applications, which allows the control of application components (master server, video servers and network). We then propose a new method to QoS management into the master server and into the video servers. From this representation, we propose a feedback control architecture applied to the master server and a replication strategy of video content in case of overload of video servers. Then, we develop an approach to QoS management in case of network overload. Experiments have permitted to evaluate the performance of our approaches implementation
Kader, Mahamane. "Contributions à la modélisation et au contrôle des systèmes intelligents distribués : application au contrôl des vibrations d'une poutre." Université de Besançon, 2000. http://www.theses.fr/2000BESA2018.
We present a new approach for the design of intelligent distributed systems for the control of beam vibrations. We construct a distributed analog circuit that approximates an optimal control law, with an observation and control system using distributed piezoelectric transducers. […] We propose a parameterization of the dynamic controllers H infinite for linear equations of state of finite dimension. […] A stabilization study was carried out on the model with constant coefficients. The theoretical results obtained were validated by numerical calculations
Casalino, Matteo Maria. "Approches pour la gestion de configurations de sécurité dans les systèmes d'information distribués." Phd thesis, Université Claude Bernard - Lyon I, 2014. http://tel.archives-ouvertes.fr/tel-01058803.
Sammoury, Mohamad Ali. "Étude théorique et numérique de la stabilité de certains systèmes distribués avec contrôle frontière de type dynamique." Thesis, Valenciennes, 2016. http://www.theses.fr/2016VALE0032/document.
This thesis is devoted to the study of the stabilization of some distributed systems with dynamic boundary control. First, we consider the stabilization of the Rayleigh beam equation with only one dynamic boundary control moment or force. We show that the system is not uniformly (exponentially) stable. However, using a spectral method, we establish the optimal polynomial decay rate of the energy of the system. Next, we study the indirect stability of the wave equation with a fractional dynamic boundary control. We show that the decay rate of the energy depends on the nature of the geometry of the domain. Using a frequency approach and a spectral method, we show the non exponential stability of the system and we establish, different polynomial stability results. Finally, we consider the finite difference space discretization of the 1-d wave equation with dynamic boundary control. First, using a spectral approach, we show that the polynomial decay of the discretized energy is not uniform with respect to the mesh size, as the energy of the continuous system. Next, we introduce a viscosity term and we establish the uniform (with respect to the mesh size) polynomial energy decay of our discrete scheme
O'Dowd, Geoffrey. "Stabilisation de systèmes distribués au moyen de contrôles dissipatifs non monotones." Nancy 1, 1999. http://www.theses.fr/1999NAN10289.
Terrand-Jeanne, Alexandre. "Régulation des systèmes à paramètres distribués : application au forage." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1283/document.
This monograph is devoted to the output regulation of some distributed parameters systems. To reach this objective, a simply proportional integral controller is implemented. Then the stability of the closed loop is proved using a Lyapunov functional that can be built given a Lyapunov functional for the open-loop system. The main contribution of this work is the method to build the Lyapunov functional, it is inspired by a well-known method in non-linear system theory : the forwarding. In a first part, the system studied is an abstract Cauchy problem and the problematic is stated using semigroup theory. Thanks to the Lyapunov employed, the regulation can be guaranteed providing some assumption on the systems operators. The second part detailed how the output regulation can be obtain for all linear outputs when the system is a n × n systems of linear balance laws in one space dimension. The result is given in the case where inputs and outputs act on the PDE’s boundary conditions and for open-loop stabilizable system. It generalize many contribution in the topic of output regulation for systems of linear balance laws. Last but not least, a part is devoted to the study of mechanicals vibrations in a drill pipe. In a first time, the behavior of the solutions for different kind of models use to model the drill pipe is detailed. Then, it is shown that the new Lyapunov functional allow to take into account complex, infinite dimensional model and to regulate the drill pipe velocity at the bottom of the wellbore by only measuring the surface velocity and with a P-I controller. At the end, some simulations are given that illustrate the result
Mouad, Mehdi. "Architecture de COntrôle/COmmande dédiée aux systèmes Distribués Autonomes (ACO²DA) : application à une plate-forme multi-véhicules." Thesis, Clermont-Ferrand 2, 2014. http://www.theses.fr/2014CLF22437/document.
The difficulty of coordinating a group of mobile robots is adressed in this thesis by investigating control architectures which aim to break task complexity. In fact, multi-robot navigation may become rapidly inextricable, specifically if it is made in hazardous and dynamical environment requiring precise and secure cooperation. The considered task is the navigation of a group of mobile robots in unknown environments in presence of (static and dynamic) obstacles. To overcome its complexity, it is proposed to divide the overall task into a set of basic behaviors/controllers (obstacle avoidance, attraction to a dynamical target, planning, etc.). Applied control is chosen among these controllers according to sensors information (camera, local sensors, etc.). The specificity of the theoretical approach is to combine the benefits of multi-controller control architectures to those of multi-agent organizational models to provide a high level of coordination between mobile agents-robots systems. The group of mobile robots is then coordinated according to different norms and specifications of the organizational model. Thus, activating a basic behavior in favor of another is done in accordance with the structural constraints of the robots in order to ensure maximum safety and precision of the coordinated movements between robots. Cooperation takes place through a supervisor agent (centralized) to reach the desired destination faster ; unexpected events are individually managed by the mobile agents/robots in a distributed way. To guarantee performance criteria of the control architecture, hybrid systems tolerating the control of continuous systems in presence of discrete events are explored. In fact, this control allows coordinating (by discrete part) the different behaviors (continuous part) of the architecture. The development of ROBOTOPIA simulator allowed us to illustrate each contribution by many results of simulations
Mansouri, Imen. "Contrôle distribué pour les systèmes multi-cœurs auto-adaptatifs." Thesis, Montpellier 2, 2011. http://www.theses.fr/2011MON20087.
Regular architectures embedding several processing elements are increasingly used in embedded systems. They require careful design to avoid high power consumption and to improve their flexibility. This thesis work deals with optimization mechanisms of large scale architectures; to meet variability issues, optimization is processed at run-time. The target design implements in-situ features to collect physical information about its yield and to monitor application workload and generated consumption. As for workload monitoring, we use activity counters connected at architecture level to a set of critical signals. We developed an automated method to optimally place these features with a minimal area overhead. The collected information are used further jointly with a power model to estimate the dissipated power and then driven appropriate optimization process. Optimal frequency for each core is set by means of a distributed controller based on consensus theory. The resulting settings aim to reduce the whole system power while fulfilling application constraints. The scheme needs to be fully distributed to garantee the control scalability, and so feasibility, as the number of cores scales
Al, Khatib Chadi. "Conception de dispositifs de contrôle asynchrones et distribués pour la gestion de l’énergie." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT016/document.
Today integrated systems are increasingly faced with the constraints of low consumption or energy efficiency. These issues need to be integrated as far upstream as possible in the design flow to reduce design time and avoid much iteration in the flow. In this context, the collaborative project HiCool, between LIRMM and TIMA laboratories, Defacto, Docea and ST Microelectronics companies, has set up a strategy and design flow to design integrated low power systems while facilitating the reuse of existing hardware blocks (IPs). The approach proposed in this thesis fits into this strategy by bringing a small dose of asynchrony in completely synchronous systems. Indeed, the reduction in consumption is based on the observation that permanent activation of the entire circuit is unnecessary in many cases. However, controlling the activity with techniques of "clock gating" or "power gating" usually need to perform a re-design of the system and to add a control device for controlling activation of areas effecting treatment. The work presented in this manuscript provides a strategy based clock controllers and power domain, asynchronous, distributed and easily insertable into a circuit with a low cost design
Devapriya, Dewasurendra. "Un système d'intelligence distribuée pour le contrôle des systèmes manufacturiers intégrés : un noyau de contrôleur réseaux de Pétri." Grenoble INPG, 1992. http://www.theses.fr/1992INPG0089.
Bresch-Pietri, Delphine. "Commande robuste de systèmes à retard variable : Contributions théoriques et applications au contrôle moteur." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2012. http://pastel.archives-ouvertes.fr/pastel-00803271.
Roy, Prateep Kumar. "Analyse et conception de la commande des systèmes embarqués distribués sous des contraintes de communication." Phd thesis, Université Paris-Est, 2009. http://tel.archives-ouvertes.fr/tel-00532883.
Nguyen, Le-Duy-Lai. "Contrôle distribué multi-couche des systèmes complexes avec contraintes de communication : application aux systèmes d'irrigation." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT108/document.
This thesis presents control problems of irrigation network with communication constraints and a multi-layer approach to solve these problems in a distributed manner. Detailed discussions of each layer with analytical and simulation results are described throughout several chapters. They emphasize the potential interest of the multi-layer approach, more precisely its efficiency and reliability for supervision, multi-objective optimization and distributed cooperative control of complex water transport systems. Conventionally, the first layer to be considered is the hydraulic network composed of free-surface channels, hydraulic structures and mesh subnetwork of pressurized pipes. By coupling the Saint-Venant equations for describing the physics of free-surface fluid and the Lattice Boltzmann method for the fluid simulation, a discrete-time nonlinear model is obtained for channel reaches. The hydraulic structures are usually treated as internal boundaries of reaches and modeled by algebraic relationships between the flow and pressure variables. To enable the exchange of information among the control system’s components, a communication network is considered in the second layer. Solving challenging problems of heterogeneous devices and communication issues (e.g., network delay, packet loss, energy consumption) is investigated in this thesis by introducing a hybrid network architecture and a dynamic routing design based on Quality of Service (QoS) requirements of control applications. For network routing, a weighted composition of some standard metrics is proposed so that the routing protocol using the composite metric achieves convergence, loop-freeness and path-optimality properties. Through extensive simulation scenarios, different network performance criteria are evaluated. The comparison of simulation results can validate the interest of this composition approach for dynamic routing. Finally, the third layer introduces an optimal reactive control system developed for the regulatory control of large-scale irrigation network under a Distributed Cooperative Model Predictive Control (DCMPC) framework. This part discusses the implementation of different control strategies (e.g., centralized, decentralized, and distributed strategies) and how the cooperative communication among local MPC controllers can be included to improve the performance of the overall system. Managing divergent (or outdated) information exchange among controllers is considered in this thesis as a consensus problem and solved by an asynchronous consensus protocol. This approach based on the multi-agent system paradigm to distributed control requires each controller to agree with its neighbors on some data values needed during action computation. For simulations, a particular benchmark of an irrigation channel is considered. The comparison of simulation results validate the benefits of the distributed cooperative control approach over other control strategies
Youssef, Lilia. "Construction de systèmes répartis sécurisés à base de composants." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00721746.
Fleury, Sara. "Architecture de contrôle distribuée pour robot mobile autonome : principes, conception et applications." Phd thesis, Université Paul Sabatier - Toulouse III, 1996. http://tel.archives-ouvertes.fr/tel-00165569.
Basmadjian, Robert. "Un protocole contrôle de réplique d'une structure d'arborescence arbitraire." Toulouse 3, 2008. http://thesesups.ups-tlse.fr/460/.
In large distributed systems, replication is the most widely used approach to offer high data availability, low bandwidth consumption, increased faulttolerance and improved scalability of the overall system. Replication-based systems implement replica control (consistency) protocols that enforce a specified semantics of accessing data. Also, the performance depends on a host of factors chief of which is the protocol used to maintain consistency among the replicas. Several replica control protocols have been described in the literature. They differ according to various parameters such as their communication costs, their ability to tolerate replica failures (also termed as their availability), as well as the load they impose on the system when performing read and write operations. Moreover these replica control protocols can be classified into two families: some protocols assume that replicas of the system are arranged logically into a specific structure (Finite Projective Plane, Grid or Tree) whereas others do not require any specific structure to be imposed on the replicas. In this thesis, at group ASTRE of IRIT and under the supervision of professor Jean-Paul Bashoun, we are interested in studying the replication protocols that arrange logically the replicas into a tree structure and investigate how to circumvent the drawbacks of the root replica as the existing treestructured protocols suffer from the root replica's bottleneck
Masri, Aladdin. "Vers le contrôle commande distribué des systèmes de production manufacturiers : approche composant pour la prise en compte de l'architecture de communication dans la modélisation." Phd thesis, Ecole Centrale de Lille, 2009. http://tel.archives-ouvertes.fr/tel-00578841.
Faye, Sébastien. "Contrôle et gestion du trafic routier urbain par un réseau de capteurs sans fil." Thesis, Paris, ENST, 2014. http://www.theses.fr/2014ENST0061/document.
Road traffic has a significant effect on metropolitan activities, especially during peak hours when it impacts on areas such as the economy and the environment. Road infrastructure is typically coordinated from a control centre that is responsible for maintaining not only its equipment but also their initial settings and incident management (both material and human). During the past few years, new technologies in the fields of information and communication have led to the introduction of intelligent transportation systems. Using multiple measurement points distributed across a country, an operator can count road users and calculate the network load. However, the centralization of information has a number of drawbacks. The aim of this thesis is to study the use of distributed systems in order to implement intelligent transportation systems via a wireless sensor network. Coupled to a detection unit (e.g., a magnetometer), the interconnected sensors can respond to the passage of a vehicle when deployed, for example, along the road. They can also work together without recourse to a central entity - rendering all or part of an urban area totally independent. Furthermore, these networks can operate autonomously and are less susceptible to breadown, because the overall running of the system is not affected by the failure of individual components. Finally, components are small and cheap, and they operate wirelessly, which means they can be deployed and redeployed both rapidly and densely
Maillet, Luc. "Spécification et validation d'une architecture de système distribué pour le contrôle d'exécution d'applications temps réel complexes." Toulouse, ENSAE, 1996. http://www.theses.fr/1996ESAE0007.
Sandoval, Moreno John Anderson. "Contribution à la coordination de commandes MPC pour systèmes distribués appliquée à la production d'énergie." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENT092/document.
This thesis is mainly about coordination of distributed systems, with a special attention to multi-energy electric power generation ones. For purposes of optimality, as well as constraint enforcement, Model Predictive Control (MPC) is chosen as the underlying tool, while wind turbines, fuel cells, photovoltaic panels, and hydroelectric plants are mostly considered as power sources to be controlled and coordinated. In the first place, an application of MPC to a micro-grid system is proposed, illustrating how to ensure appropriate performance for each generator and support units. In this context, a special attention is paid to the maximum power production by a wind turbine, via an original observer-based control when no wind speed measurement is available. Then, the principles of distributed-coordinated control, when considering an MPC-based formulation, are considered for the context of larger scale systems. Here, a new approach for price-driven coordination with constraints is proposed for the management of local MPC controllers, each of them being associated to one power generation unit typically. In addition, the computation of invariant sets is used for the performance analysis of the closed- loop control system, for both centralized MPC and price-driven coordination schemes. Finally, a couple of case studies in the field of power generation systems is included, illustrating the relevance of the proposed coordination control strategy
Berrabah, Abdelhak. "Observateurs et Principe du Maximum "Approché" des Systèmes Bilinéaires en Dimension Infinie sous contrôles à paramètres distribués." Chambéry, 2004. http://www.theses.fr/2004CHAMS002.
There are two parts in this thesis : 1st part : Given a bilinear infinite-dimensional system, under control in infinite dimension, we build a simple observer for this process under a Hilbert-Schmidt's and dissipation condition. In this part, we prove a approximate principle of maximum in infinite dimension for bilinear systems. Furthermore if the control is finite dimensional, or if the operators which give the control dynamic are compacts, we prove that we have again an exact PMP
Quinton, Sophie. "Design, vérification et implémentation de systèmes à composants." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00685854.
Youssef, Ayman. "Architecture distribuée multi-experts avec contrôle hiérarchique pour le pilotage des systèmes de production." Metz, 1998. http://docnum.univ-lorraine.fr/public/UPV-M/Theses/1998/Youssef.Ayman.SMZ9804.pdf.
Current economic constraints induced by a market demand in constant evolution oblige enterprises to face more demanding customers and fierce competition. In addition to these economic constraints, companies must face necessary industrial reorganisations. In this context, many enterprises have not considered the problem of experience capitalisation. Consequently, the enterprise is confronted to the problem of know-how capitalisation and exploitation. In order to bring a contribution to this problem, we propose a distributed multi-expert architecture with hierarchical control for a reactive shop-floor control of production systems. This work falls under the framework of the SYCORO (Objective-driven Reactive Control System) on on-line control of production systems able to take into account aspects such as integration, flexibility, reactivity and know-how capitalisation
Auriol, Jean. "Contrôle robuste d'EDPs linéaires hyperboliques par méthodes de backstepping." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEM011/document.
Linear First-Order Hyperbolic Partial Differential Equations (LFOH PDEs) represent systems of conservation and balance law and are predominant in modeling of traffic flow, heat exchanger, open channel flow or multiphase flow. Different control approaches have been tackled for the stabilization or observation of such systems. Among them, the backstepping method consists to map the original system to a simpler system for which the control design is easier. The resulting controllers are explicit.In the first part of this thesis, we develop some general results in control theory. More precisely, we solve the problem of finite-time stabilization of a general class of LFOH PDEs using the backstepping methodology. The minimum stabilization time reachable may change depending on the number of available actuators. The corresponding boundary observers (crucial to envision industrial applications) are obtained through a dual approach. An important by-product of the proposed approach is to derive an explicit mapping from the space generated by the solutions of the considered LFOH PDEs to the space generated by the solutions of a general class of neutral systems with distributed delays. This mapping opens new prospects in terms of stability analysis for LFOH PDEs, extending the stability analysis methods developed for neutral systems.In the second part of the thesis, we prove the necessity of a change of strategy for robust control while considering industrial applications, for which the major limitation is known to be the robustness of the resulting control law to uncertainties in the parameters, delays in the loop, neglected dynamics or disturbances and noise acting on the system. In some situations, one may have to renounce to finite-time stabilization to ensure the existence of robustness margins. We propose some adjustments in the previously designed control laws by means of several degrees of freedom enabling trade-offs between performance and robustness. The robustness analysis is fulfilled using the explicit mapping between LFOH PDEs and neutral systems previously introduced
Rodrigues, de Campos Gabriel. "Stratégies de commande collaborative pour des systèmes multi-robots." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00981962.
Charrier, Rodolphe. "L'intelligence en essaim sous l'angle des systèmes complexes : étude d'un système multi-agent réactif à base d'itérations logistiques couplées." Phd thesis, Université Nancy II, 2009. http://tel.archives-ouvertes.fr/tel-00442841.
Nguyen, Tung Lam. "Contrôle et optimisation distribués basés sur l'agent dans les micro-réseaux avec implémentation Hardware-in-the-Loop." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT022/document.
In terms of the control hierarchy of microgrids, the coordination of local controllers is mandatory in the secondary and tertiary levels. Instead of using a central unit as conventional approaches, in this work, distributed schemes are considered. The distributed approaches have been taken attention widely recently due to the advantages of reliability, scalability, and security. The multi-agent system is an advanced technique having properties that make them suitable for acting as a basis for building modern distributed control systems. The thesis focuses on the design of agents aiming to distributed control and optimization algorithms in microgrids with realistic on-line deployment on a Hardware-in-the-loop platform. Based on the provided three-layer architecture of microgrids, a laboratory platform with Hardware-in-the-loop setup is constructed in the system level. This platform includes two parts: (1) a digital real-time simulator uses to simulate test case microgrids with local controllers in real-time; and (2) a cluster of hardware Raspberry PIs represents the multi-agent system operating in a sparse physical communication network. An agent is a Python-based program run on a single Raspberry PI owing abilities to transfer data with neighbors and computing algorithms to control the microgrid in a distributed manner.In the thesis, we apply the distributed algorithms for both secondary and tertiary control level. The distributed secondary controls in an islanded microgrid are presented in two approaches of finite-time consensus algorithm and average consensus algorithm with the improvements in performances. An extension of the platform with Power Hardware-in-the-Loop and IEC 61850-based communication is processed to make the deployment of agents closer to industrial applications. On the top control level, the agents execute the Alternating Direction Method of Multipliers to find out the optimal operation points of microgrid systems in both islanded and grid-connect state. The secondary and tertiary control objectives are achieved in a single framework which is rarely reported in other studies.Overall, the agent is explicitly investigated and deployed in the realistic conditions to facilitate applications of the distributed algorithms for the hierarchical control in microgrids. This research gives a further step making the distributed algorithms closer to onsite implementation
Doucet, Patrik. "Développement d'une méthodologie de conception permettant l'intégration sécuritaire des automates programmables industriels, API, et des systèmes de contrôle distribués, SCD, aux systèmes de production automatisés destinés à l'industrie québécoise des pâtes et papiers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0005/MQ40575.pdf.
Masri, Aladdin. "Vers le contrôle commande distribué des systèmes de production manufacturiers : approche composant pour la prise en compte de l’architecture de communication dans la modélisation." Thesis, Ecole centrale de Lille, 2009. http://www.theses.fr/2009ECLI0012/document.
Manufacturing systems belong to the class of distributed discrete event systems. Their size requires distributing the software to control them on architecture of several industrial computers connected by networks. In this context, it becomes crucial to be able to evaluate the impact of a specific architecture on the manufacturing systems services both in terms of performance and quality. The performance of the underlying network can notably affect the productivity of the system. In traditional methodology proposed in literature, this aspect is not taken into account in the design stage. Thus, modeling such systems is important to verify some properties at that stage. In this thesis, we propose a component-based modeling approach with High Level Petri nets based method for modeling some network protocols in order to evaluate the manufacturing systems as being distributed systems. The selection of Petri nets is justified by their expression power with regard to the modeling of distributed and concurrent systems. Component-based approach can decrease modeling complexity and encourages genericity, modularity and reusability of ready-to-use components. This allows building new models easily and reducing the systems development cost. Moreover, this can help in better managing services and protocols and to easily change/modify a system element. Finally, this modeling enables us to evaluate discrete event systems by means of centralized simulations
Ben, Hafaiedh Imane. "Systèmes à base de composants : du design à l'implémentation." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00573291.
Bribiesca, Argomedo Federico. "Contrôle et stabilité Entrée-Etat en dimension infinie du profil du facteur de sécurité dans un plasma Tokamak." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENT023/document.
In this thesis, we are interested in the control of the safety factor profile or q-profile in a tokamak plasma. This physical quantity has been found to be related to several phenomena in the plasma, in particular magnetohydrodynamic (MHD) instabilities. Having an adequate safety factor profile is particularly important to achieve advanced tokamak operation, providing high confinement and MHD stability. To achieve this, we focus in controlling the gradient of the poloidal magnetic flux profile. The evolution of this variable is given by a diffusion equation with distributed time-varying coefficients. Based on Lyapunov techniques and the Input-to-State stability properties of the system we propose a robust control law that takes into account nonlinear constraints on the control action imposed by the physical actuators
Jacquet, Denis. "Modélisation Macroscopique du Trafic et Contrôle des Lois de Conservation Non Linéaires Associées." Phd thesis, Grenoble INPG, 2006. http://tel.archives-ouvertes.fr/tel-00150434.
Bribiesca, argomedo Fédérico. "Contrôle et stabilité Entrée-Etat en dimension infinie du profil du facteur de sécurité dans un plasma Tokamak Infinite dimensional control and Input-to-State stability of the safety factor profile in a Tokamak plasma." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00920942.
Jiang, Wei. "Contrôle de la formation et du confinement variable dans le temps et entièrement distribué pour les systèmes multi-agents/ multi-robots." Thesis, Ecole centrale de Lille, 2018. http://www.theses.fr/2018ECLI0016/document.
This thesis deals with the time-varying formation and containment control for linear time-invariant multi-agent systems with heterogeneity considering constant / time-varying input / output delays and matched / mismatched disturbances under directed and fixed communication topology. New formats of time-varying formation shapes for homogeneous and heterogeneous systems are proposed. The controllers, which are designed based on predictive and adaptive techniques with observer technique, are fully distributed and can be applied to large-scale systems. The application on linearized heterogeneous multi mobile robot systems is verified
Durand, Stéphane. "Analysis of Best Response Dynamics in Potential Games." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAM096.
In game theory, Nash equilibria, the states where no players can gain by unilaterally changing their strategy, are one of the main notions of solution of the games. nash equilibria are the most likely states at equilibrium, they are also stable and in many context they have properties guaranteeing being near the optimums. We focus on potential games, a subclass of the gameswhich include among other all congestion games and routing games. Even restricted on the class of potential games, finding a Nash equilibrium is difficult. This problem is in fact PLS-complete, which is a class between P and NP. Best response dynamics, are a greedy algorithm, which were first devised as a tool for proving existence of a Nash equilibrium. Their worst-case complexity is exponential with respect to the number of players. they were also though to need their players acting strictly one after the others to ensure convergence. as such they do not appears as an efficient algorithm for actually computing an equilibrium. However, in this thesis we will show that the condition to ensure convergence is more permissive than separates players, and that this algorithm is efficient when considered through average complexity: When averaging over the set of all potential games, we can obtain a linear bound on the basic version. In order to obtain this result, we apply a Markovian approximation allowing us to solve the system analytically. This approach also shows that the best response dynamics are robust, they stay efficient under much wider conditions of application. This include distributed system, with independent actors with little knowledge of each other, with a bound in O(n log n). It can also take into account instances where players do not know their utilities, getting a similar bound. This approach also shows how to benefit from a network structure on the game to get a complexity based on the number of neighbors of the players instead of the number of players
Payet, Matthieu. "Conception de systèmes programmables basés sur les NoC par synthèse de haut niveau : analyse symbolique et contrôle distribué." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSES051/document.
Network-on-Chip (NoC) introduces parallelism in communications and emerges with the growing integration of circuits as large designs need scalable communication architectures. This introduces the separation between communication tasks and processing tasks, and makes the design with NoC more complex. High level synthesis (HLS) tools can help designers to quickly generate high quality HDL (Hardware Description Level) designs. But their control schemes are centralized, usually using finite state machines. To take benefit from parallel algorithms and the ever growing FPGAs, HLS tools must properly extract the parallelism from the input representation and use the available resources efficiently. Algorithm designers are used with programming languages. This behavioral specification has to be enriched with architectural details for a correct optimization of the generated design. The C to FPGA path is not straightforward, and the need for architectural knowledges limits the adoption of FPGAs, and more generally, parallel architecture. In this thesis, we present a method that uses a symbolic analysis technique to extract the parallelism of an algorithmic specification written in a high level language. Parallelization skills are not required from the users. A methodology is then proposed for adding NoCs in the automatic design generation that takes the benefit of potential parallelizations. To dimension the design, we estimate the design resource consumption using a mathematical model for the NoC. A scalable application, hardware specific, is then generated using a High Level Synthesis flow. We provide a distributed mechanism for data path reconfiguration that allows different applications to run on the same set of processing elements. Thus, the output design is programmable and has a processor-less distributed control. This approach of using NoCs enables us to automatically design generic architectures that can be used on FPGA servers for High Performance Reconfigurable Computing. The generated design is programmable. This enable users to avoid the logic synthesis step when modifying the algorithm if a existing design provide the needed operators
Trabelsi, Chiraz. "Contrôle matériel des systèmes partiellement reconfigurables sur FPGA : de la modélisation à l'implémentation." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2013. http://tel.archives-ouvertes.fr/tel-00852361.
Klein, Thomas. "Le kanban actif pour assurer l’intéropérabilité décisionnelle centralisé/distribué : Application à un industriel de l’ameublement." Thesis, Nancy 1, 2008. http://www.theses.fr/2008NAN10138/document.
The defended thesis is the result of a partnership enters on one hand the group Parisot, and particularly the corporation Parisot Furnishes, and on the other hand the team of research technological TRACILOG of the Center of Research in Automatic of Nancy. This work has focused on a study of the opportunities provided by new information technologies on the procedures of production and the proposal of a decision support steering flow on the ground. The proposed architecture relies on the flow infotronisation kanban, which become "kanban assets and ensure interoperability and synchronization between a centralized system of decision-making and different decision-making distribution entities, to coordinate all decisions. These proposals have been validated through an architecture emulation, allowing the use of a flight control system under real conditions. In addition, some proposed structures have been validated in the real production system. The contributions of this thesis work based on: • The proposal of an architecture evaluation emulation control systems of production on an industrial scale, and the method of construction. • The proposal of a system of aid to the management of the production to ensure the overall coherence of the decision system
Munier, Manuel. "Une architecture pour intégrer des composants de contrôle de la coopération dans un atelier distribué." Nancy 1, 1999. http://docnum.univ-lorraine.fr/public/SCD_T_1999_0017_MUNIER.pdf.
In this thesis we detail a new advanced transaction model that not only supports cooperation between activities through intermediate results exchanges while executing, but also allows them to be distributed and autonomous and to use possibly different cooperation schema to share their data. Our main objective was to decentralize the control of interactions towards the activities themselves, ie: - each activity coordinates its own interactions with other activities; - these controls performed locally implicitly ensure the synchronization of the whole system. With that in mind, we defined two distributed corectness criteria: the D-serializability and the the DisCOO-serializability. They provide the same global properties than classical corectness criteria (serializability and COO-serializability) but they only rely on local controls performed by each transaction. Besides the decentralization of the control of interactions, our second objective was to define mechanisms to let transactions negotiate the ruLes (cooperation schemas) they want to verify on their data exchanges
Neunreuther, Éric. "Contribution à la modélisation des systèmes intégrés de production à intelligence distribuée : application à la distribution du contrôle et de la gestion technique sur les équipements de terrain." Nancy 1, 1998. http://www.theses.fr/1998NAN10183.
Ortiz, Aurélien. "Contrôle de la concurrence dans les grilles informatiques." Toulouse 3, 2009. http://thesesups.ups-tlse.fr/770/.
These last decades, the progress made in the field of telecommunications made possible the gathering of multiple clusters, interconnected by a wide area network. The birth of grid computing allowed the collaboration of geographically distributed resources, thus authorizing the execution of applications which require a great power of calculation and a large storage space. A middleware is then used to federate the grid resources and to solve the problems involved in the heterogeneity and dynamicity of those resources, as well as the safety of the grid's administrative domains. The ViSaGe project was born in this context. ViSaGe is a grid middleware which includes a distributed file system, and a virtualization layer which aggregates the storage resources dispersed among the grid nodes, in order to provide the user a global view of a huge shared virtual space. In this thesis, we were interested in the ViSaGe's concurrency control service : the VCCC. This component uses a mutual exclusion algorithm to ensure consistency accesses to various ressources shared by the grid nodes. This service is essential, but it generates a lot of control messages on the network. However, these messages, which are often of small size, are strongly exposed to the latency of the network which characterizes grid environment. Consequently, the concurrency control very often degrades the performance and the reactivity of the middleware. What we achieved in this thesis consists in bringing a competitive solution to carry out the synchronization of the grid nodes. We proposed a mutual exclusion algorithm based on several techniques resulting from the literature. In particular, we used a token algorithm, for which the grid nodes are organized according to a tree structure. Moreover, we implemented other methods to make easier the adaptation of the VCCC to the architecture of the grid, and thus to enhance the performance of our middleware. First of all, we improved the cache management of the other components of ViSaGe, according to the workload observed in the VCCC. In addition, we optimized the way that the concurrency control is spread out over the various grid nodes. Lastly, we developed a method based on the use of the multicast, which makes it possible in some cases to go round the problem induced by the network latency, with an aim of improving the reactivity of the system. .
Ravi, Mondi. "Confiance et incertitude dans les environnements distribués : application à la gestion des donnéeset de la qualité des sources de données dans les systèmes M2M (Machine to Machine)." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAM090/document.
Trust and uncertainty are two important aspects of many distributed systems. For example, multiple sources of information can be available for the same type of information. This poses the problem to select the best source that can produce the most certain information and to resolve incoherence amongst the available information. Managing trust and uncertainty together forms a complex problem and through this thesis we develop a solution to this. Trust and uncertainty have an intrinsic relationship. Trust is primarily related to sources of information while uncertainty is a characteristic of the information itself. In the absence of trust and uncertainty measures, a system generally suffers from problems like incoherence and uncertainty. To improve on this, we hypothesize that the sources with higher trust levels will produce more certain information than those with lower trust values. We then use the trust measures of the information sources to quantify uncertainty in the information and thereby infer high level conclusions with greater certainty.A general trend in the modern distributed systems is to embed reasoning capabilities in the end devices to make them smart and autonomous. We model these end devices as agents of a Multi Agent System. Major sources of beliefs for such agents are external information sources that can possess varying trust levels. Moreover, the incoming information and beliefs are associated with a degree of uncertainty. Hence, the agents face two-fold problems of managing trust on sources and presence of uncertainty in the information. We illustrate this with three application domains: (i) The intelligent community, (ii) Smart city garbage collection, and (iii) FIWARE : a European project about the Future Internet that motivated the research on this topic. Our solution to the problem involves modelling the devices (or entities) of these domains as intelligent agents that comprise a trust management module, an inference engine and a belief revision system. We show that this set of components can help agents to manage trust on the other sources and quantify uncertainty in the information and then use this to infer more certain high level conclusions. We finally assess our approach using simulated and real data pertaining to the different application domains
Hu, Wei. "Identification de paramètre basée sur l'optimisation de l'intelligence artificielle et le contrôle de suivi distribué des systèmes multi-agents d'ordre fractionnaire." Thesis, Ecole centrale de Lille, 2019. http://www.theses.fr/2019ECLI0008/document.
This thesis deals with the parameter identification from the viewpoint of optimization and distributed tracking control of fractional-order multi-agent systems (FOMASs) considering time delays, external disturbances, inherent nonlinearity, parameters uncertainties, and heterogeneity under fixed undirected/directed communication topology. Several efficient controllers are designed to achieve the distributed tracking control of FOMASs successfully under different conditions. Several kinds of artificial intelligence optimization algorithms andtheir modified versions are applied to identify the unknown parameters of the FOMASs with high accuracy, fast convergence and strong robustness. It should be noted that this thesis provides a promising link between the artificial intelligence technique and distributed control
Ameziane, El Hassani Abdeljebar. "Le contrôle d'accès des réseaux et grandes infrastructures critiques distribuées." Phd thesis, Toulouse, INPT, 2016. http://oatao.univ-toulouse.fr/15962/1/ameziane.pdf.
Vincent, Benjamin. "Modélisation et analyse des systèmes de commande multi-physiques." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT091.
% The thesis aims at studying and developing structured-based approaches for the modelling and analysis of distributed parameter systems where thermodynamic contributions cannot be neglected. Geometric formalisms are considered for the representation of this class of dynamical systems. Key contributions include structured modelling from first principle equations, structure-preserving geometric reduction and discretization, and passivity and stability analysis for multi-physics systems based on total irreversible entropy production. The thesis is motivated by two applications: the control of burning plasma profiles in Tokamaks; and, the rejection of thermoacoustic unstabilities in a Rijke's tube. The second application illustrates an instable thermoacoustic phenomenon arising experimentally under specific geometry and heating conditions within a vertical tube. Both systems are formulated as structured ones through port-Hamiltonian and GENERIC formalisms