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Auswahl der wissenschaftlichen Literatur zum Thema „Estimation par horizon glissant“
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Zeitschriftenartikel zum Thema "Estimation par horizon glissant"
Faye, R. M., S. Sawadogo und F. Mora-Camino. „Logique floue Appliquée à la gestion à long terme des ressources en eau“. Revue des sciences de l'eau 15, Nr. 3 (12.04.2005): 579–96. http://dx.doi.org/10.7202/705470ar.
Der volle Inhalt der QuelleCoyle, Doug. „Mise en oeuvre d’une politique pour une génération sans tabac au Canada : estimation des répercussions à long terme“. Promotion de la santé et prévention des maladies chroniques au Canada 45, Nr. 1 (Januar 2025): 45–59. https://doi.org/10.24095/hpcdp.45.1.03f.
Der volle Inhalt der QuelleGuiro, Aboudramane, Abderrahman Iggidr und Diène Ngom. „Interval numerical observer: Application to a discrete time nonlinear fish model“. Revue Africaine de la Recherche en Informatique et Mathématiques Appliquées Volume 11, 2009 - Special... (11.08.2008). http://dx.doi.org/10.46298/arima.1923.
Der volle Inhalt der QuelleOzer-Stillman, Ipek, John D. Whalen, Lori D. Bash, Mustafa Oguz, Mark Du, Puneet K. Singhal und Glenn M. Davies. „Abstract 372: Health Outcomes Associated With Triple Antiplatelet Therapy for the Secondary Prevention of Atherothrombotic Events“. Circulation: Cardiovascular Quality and Outcomes 8, suppl_2 (Mai 2015). http://dx.doi.org/10.1161/circoutcomes.8.suppl_2.372.
Der volle Inhalt der QuelleDissertationen zum Thema "Estimation par horizon glissant"
Gruss, Lucas. „Estimation avancée à horizon glissant, état et paramètres, pour la conduite du coeur des réacteurs PWR“. Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2024. http://www.theses.fr/2024IMTA0434.
Der volle Inhalt der QuelleThe model predictive control (MPC) approach has undeniable advantages for the core control of Pressurized Water Reactors (PWR) ; it is poised to enhance Framatome’s commercial offering. Nevertheless, the performance of MPC is conditioned by the quality of the underlying predictive model and the real-time knowledge of the current state of there actor core model. This thesis revisits these two aspects that constitute industrial barriers. It proposes a model of the core with just sufficient complexity and a method to perform adaptive calibration of some of its parameters. This is because the core dynamics evolve with fuel depletion ; accounting for this through predetermined parameters requires significant effort. We propose the use of a Moving Horizon Estimator (MHE) to jointly estimate the state variables of the model. The stiffness and non-linear nature of the dynamic model (related to the characteristics of the process) make the implementation choices of the estimator crucial. Direct exploitation of the continuous-time model, implicit integrator, collocation, interpolation of input data, etc. are key concepts resulting into a performant and resilient MHE estimator, where traditional methods fail (e.g., EKF). The estimator is validated based on fine simulations carried out on the expert simulator SOFIA used at Framatome
Bousbia-Salah, Ryad. „Optimisation dynamique en temps-réel d’un procédé de polymérisation par greffage“. Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0242/document.
Der volle Inhalt der QuelleIn a schematic way, process optimization consists of three basic steps: (i) modeling, in which a (phenomenological) model of the process is developed, (ii) problem formulation, in which the criterion of Performance, constraints and decision variables are defined, (iii) the resolution of the optimal problem, in which the optimal profiles of the decision variables are determined. It is important to emphasize that these optimal profiles guarantee the optimality for the model used. When applied to the process, these profiles are optimal only when the model perfectly describes the behavior of the process, which is very rarely the case in practice. Indeed, uncertainties about model parameters, process disturbances, and structural model errors mean that the optimal profiles of the model-based decision variables will probably not be optimal for the process. The objective of this thesis is to develop a conceptual strategy for using experimental measurements online so that the process not only satisfies the necessary conditions, but also the optimal conditions. This conceptual development will in particular be based on recent advances in deterministic optimization (the stochastic methods will not be dealt with in this work) of processes based on the estimation of the state variables that are not measured by a moving horizon observer. A dynamic real-time optimization (D-RTO) methodology has been developed and applied to a batch reactor where polymer grafting reactions take place. The objective is to determine the on-line reactor temperature profile that minimizes the batch time while meeting terminal constraints on the overall conversion rate and grafting efficiency
Bousbia-Salah, Ryad. „Optimisation dynamique en temps-réel d’un procédé de polymérisation par greffage“. Electronic Thesis or Diss., Université de Lorraine, 2018. http://www.theses.fr/2018LORR0242.
Der volle Inhalt der QuelleIn a schematic way, process optimization consists of three basic steps: (i) modeling, in which a (phenomenological) model of the process is developed, (ii) problem formulation, in which the criterion of Performance, constraints and decision variables are defined, (iii) the resolution of the optimal problem, in which the optimal profiles of the decision variables are determined. It is important to emphasize that these optimal profiles guarantee the optimality for the model used. When applied to the process, these profiles are optimal only when the model perfectly describes the behavior of the process, which is very rarely the case in practice. Indeed, uncertainties about model parameters, process disturbances, and structural model errors mean that the optimal profiles of the model-based decision variables will probably not be optimal for the process. The objective of this thesis is to develop a conceptual strategy for using experimental measurements online so that the process not only satisfies the necessary conditions, but also the optimal conditions. This conceptual development will in particular be based on recent advances in deterministic optimization (the stochastic methods will not be dealt with in this work) of processes based on the estimation of the state variables that are not measured by a moving horizon observer. A dynamic real-time optimization (D-RTO) methodology has been developed and applied to a batch reactor where polymer grafting reactions take place. The objective is to determine the on-line reactor temperature profile that minimizes the batch time while meeting terminal constraints on the overall conversion rate and grafting efficiency
Thomas, Jean. „Estimation et commande prédictive à horizon glissant de systèmes hybrides“. Paris 11, 2004. http://www.theses.fr/2004PA112154.
Der volle Inhalt der QuelleHybrid systems become more and more attractive to researchers, as they cover several domains of applications. "Hybrid dynamical systems" indicates categories of dynamical systems including explicitly and simultaneously continuous and discrete type dynamical phenomena. The MLD "Mixed Logical Dynamical" formalism, proposed by Bemporad and Morari in 1999, allows in that sense modelling several classes of hybrid systems, formulating and solving traditional problems such as control, state estimation, identification and fault detection. The major challenge of this formalism remains the computation time of the optimization problem. This work investigates two major directions. The first aims at developing new techniques of application of the predictive strategy for hybrid systems under the MLD form. The objective of these approaches is to reduce the computing time for real time applications purposes. Three solutions are proposed. The first is based on partitioning the space thus reducing the number of binary optimisation variables (multi MLD model). The second develops a strategy of partial enumeration for the optimization problem. Finally the third considers the use of genetic algorithms to solve the optimisation problem induced by the predictive strategy. The second direction of research examines the dual problem of the previous one, the state estimation of hybrid systems modelled under the MLD form, and in particular the application to the sensors fault detection. The techniques developed within this framework are validated on a steam generator benchmark
Brulin, Damien. „Fusion de données multi-capteurs pour l'habitat intelligent“. Thesis, Orléans, 2010. http://www.theses.fr/2010ORLE2066/document.
Der volle Inhalt der QuelleThe smart home concept has been widely developed in the last years in order to propose solutions for twomain concerns : optimized energy management in building and help for in-home support for elderly people.In this context, the CAPTHOM project, in which this thesis is in line with, has been developed. To respondto these problems, many sensors, of different natures, are used to detect the human presence, to determinethe position and the posture of the person. In fact, no sensor can , alone, answers to all information justifyingthe development of a multi-sensor system and a data fusion method. In this project, the selected sensorsare passive infrared sensors (PIR), thermopiles and a video camera. No sensor is carried by the person(non invasive system). We propose a global architecture of intelligent sensor made of four fusion modulesallowing respectively to detect the human presence, to locate in 3D the person, to determine the posture andto help to make a decision according to the application. The human presence module fuses information ofthe three sensors : PIR sensors for the movement, thermopiles for the presence in case of immobility and thecamera to identify the detected entity. The 3D localisation of the person is realized thanks to position recedinghorizon estimation. This method, called Visual Receding Horizon Estimation (VRHE), formulates the positionestimation problem into an nonlinear optimisation problem under constraints in the image plane. The fusionmodule for the posture determination is based on fuzzy logic. It insures the posture determination regardlessof the person and the distance from the camera. Finally, the module to make a decision fuses the outputs of the preceding modules and gives the opportunity to launch alarms (elderly people monitoring) or to commandhome automation devices (lightning, heating) for the energy management of buildings
Boillereaux, Lionel. „Estimation d'état de procédés non-linéaires : méthode à horizon glissant avec indicateur de qualité“. Grenoble INPG, 1996. http://www.theses.fr/1996INPG0087.
Der volle Inhalt der QuelleDardour, Amira. „Estimation et diagnostic de réseaux de Petri partiellement observables“. Thesis, Angers, 2018. http://www.theses.fr/2018ANGE0054/document.
Der volle Inhalt der QuelleWith the evolution of technology, humans have made available systems increasingly complex but also increasingly sensitive to faults that may affect it. A diagnostic procedure which contributes to the smooth running of the process is thus necessary. In this context, the aim of this thesis is the diagnosis of discrete event systems modeled by partially observed Labeled Petri Nets (LPNs). Under the assumption that each defect is modeled by the firing of an unobservable transition, two diagnostic approaches based on state estimation are developed. A first approach is to estimate the set of basis markings on a sliding elementary horizon. This approach is carried out in two steps. The first step is to determine a set of candidate vectors from an algebraic approach. The second step is to eliminate the calculated candidate solutions that are not associated with a possible trajectory of the LPN. As the set of basis markings can also be huge, a second diagnostic approach will avoid this pitfall by not estimating the markings. A relaxation technique of Integer Linear Programming (ILP) problems on a receding horizon is used to have a diagnosis in polynomial time
Valdes-Gonzalez, Héctor-Moisés. „Contribution à l'estimation d'état à horizon glissant par méthodes ensemblistes : applications à la surveillance et détection des dysfonctionnements sur des bioprocédés“. Université Joseph Fourier (Grenoble), 2002. http://www.theses.fr/2002GRE10237.
Der volle Inhalt der QuellePerozzi, Gabriele. „Exploration sécurisée d’un champ aérodynamique par un mini drone“. Thesis, Ecole centrale de Lille, 2018. http://www.theses.fr/2018ECLI0007/document.
Der volle Inhalt der QuelleThis thesis is part of the project "Small drones in the wind" carried by the ONERA center of Lille. This project aims to use the drone as a "wind sensor" to manage a UAV quadrotor in disturbed wind conditions using wind field prediction. In this context, the goal of the thesis is to make the quadrotor a wind sensor to provide local information to update the navigation system. With real-time on-board wind estimation, the quadrotor can compute a trajectory planning avoiding dangerous areas and the corresponding trajectory control, based on anexisting cartography and information on the aerodynamic behavior of airflow close to obstacles. Thus, the results of this thesis, whose main objectives are to estimate instant wind and position control, will be merged with another study dealing with trajectory planning. An important problem is that pressure sensors, such as the aeroclinometer and the Pitot tube, are not usable in rotary-wing vehicles because rotors air inflow interferes with the atmospheric flow and lightweight LIDAR sensors generally are not available. Another approach to estimate the wind is to implement an estimation software (or an intelligent sensor). In this thesis, three estimators are developed using the sliding mode approach, based on an adequate drone model, available measurements on the quadrotor and inertial tracking position systems. We are then interested in the control of the trajectory also by sliding mode considering the nonlinear model of the quadrotor. In addition, we are still studying quite an early alternative solution based on the H control, considering the linearized model for different equilibrium points as a function of the wind speed. The control and estimation algorithms are strictly based on the detailed model of the quadrotor, which highlights the influence of the wind
Venturino, Antonello. „Constrained distributed state estimation for surveillance missions using multi-sensor multi-robot systems“. Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPAST118.
Der volle Inhalt der QuelleDistributed algorithms have pervaded many aspects of control engineering with applications for multi-robot systems, sensor networks, covering topics such as control, state estimation, fault detection, cyber-attack detection and mitigation on cyber-physical systems, etc. Indeed, distributed schemes face problems like scalability and communication between agents. In multi-agent systems applications (e.g. fleet of mobile robots, sensor networks) it is now common to design state estimation algorithms in a distributed way so that the agents can accomplish their tasks based on some shared information within their neighborhoods. In surveillance missions, a low-cost static Sensor Network (e.g. with cameras) could be deployed to localize in a distributed way intruders in a given area. In this context, the main objective of this work is to design distributed observers to estimate the state of a dynamic system (e.g. a multi-robot system) that efficiently handle constraints and uncertainties but with reduced computation load. This PhD thesis proposes new Distributed Moving Horizon Estimation (DMHE) algorithms with a Luenberger pre-estimation in the formulation of the local problem solved by each sensor, resulting in a significant reduction of the computation time, while preserving the estimation accuracy. Moreover, this manuscript proposes a consensus strategy to enhance the convergence time of the estimates among sensors while dealing with weak unobservability conditions (e.g. vehicles not visible by some cameras). Another contribution concerns the improvement of the convergence of the estimation error by mitigating unobservability issues by using a l-step neighborhood information spreading mechanism. The proposed distributed estimation is designed for realistic large-scale systems scenarios involving sporadic measurements (i.e. available at time instants a priori unknown). To this aim, constraints on measurements (e.g. camera field of view) are embodied using time-varying binary parameters in the optimization problem. Both realistic simulations within the Robot Operating System (ROS) framework and Gazebo environment, as well as experimental validation of the proposed DMHE localization technique of a Multi-Vehicle System (MVS) with ground mobile robots are performed, using a static Sensor Network composed of low-cost cameras which provide measurements on the positions of the robots of the MVS. The proposed algorithms are compared to previous results from the literature, considering several metrics such as computation time and accuracy of the estimates