Literatura académica sobre el tema "Capteurs de Forces"
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Artículos de revistas sobre el tema "Capteurs de Forces"
Feghoul, Aiman, Rachid Aissaoui y Chenier Felix. "Prédiction des forces et du moment de réaction sur la main courante lors de la propulsion manuelle en fauteuil roulant en utilisant des capteurs inertiels". Neurophysiologie Clinique 49, n.º 6 (diciembre de 2019): 415–16. http://dx.doi.org/10.1016/j.neucli.2019.10.028.
Texto completoSchmitt, P. M., C. Gehin, O. Dupuis, G. Delhomme y A. Dittmar. "« FORSAFE » forceps et capteurs souples bio-inspirés". ITBM-RBM 26, n.º 4 (septiembre de 2005): 249–51. http://dx.doi.org/10.1016/j.rbmret.2005.06.005.
Texto completoSchmitt, P. M., C. Ramon, C. Gehin y A. Dittmar. "« FORSAFE » forceps et capteurs souples bio-inspirés". ITBM-RBM 27, n.º 5-6 (noviembre de 2006): 212–16. http://dx.doi.org/10.1016/j.rbmret.2007.01.002.
Texto completoHenrion, Daniel. "Le canal ionique Piezo1 est le capteur des forces mécaniques dans les vaisseaux capillaires cérébraux". médecine/sciences 38, n.º 12 (diciembre de 2022): 1065–68. http://dx.doi.org/10.1051/medsci/2022156.
Texto completoMenasria, Fouad, Abdelhafid Moummi, Noureddine Moummi, Merouane Zedayria y Mabrouk Guestal. "Modélisation des échanges convectifs dans le conduit utile d’un capteur solaire plan à air muni de rugosités artificielles de formes rectangulaires". Journal of Renewable Energies 14, n.º 3 (24 de octubre de 2023): 369–79. http://dx.doi.org/10.54966/jreen.v14i3.266.
Texto completoBlanc, Jérôme. "Formes et rationalités du localisme monétaire*". Articles 78, n.º 3 (9 de noviembre de 2004): 347–69. http://dx.doi.org/10.7202/007256ar.
Texto completoKader Hounsouho Lingani, Abdel, Siedouba Georges Ye, Sie Kam y Dieudonne Joseph Bathiebo. "ETUDE DES CARACTERISTIQUES MECANIQUES DE VARIETES DE TUBERCULES DIGNAME, DE PATATE ET DE MANIOC CONSOMMES AU BURKINA FASO". International Journal of Advanced Research 9, n.º 10 (31 de octubre de 2021): 795–804. http://dx.doi.org/10.21474/ijar01/13612.
Texto completoBoyer, Sylvie. "Échographie imaginaire : formes et figures poétiques d’un impensé intrafoetal dans l’oeuvre de Michel Leiris". Protée 35, n.º 1 (27 de junio de 2007): 75–84. http://dx.doi.org/10.7202/015891ar.
Texto completoBakatchina, Sadate, Thierry Weissland y Arnaud Faupin. "Les dispositifs d’évaluation des parasportifs pratiquant des sports de petits terrains en fauteuil roulant manuel". Movement & Sport Sciences - Science & Motricité, 2021. http://dx.doi.org/10.1051/sm/2020016.
Texto completoCatena, Àngels. "L’EXPRESSION DE L’EXTRÊME. FORMES ET FONCTIONS DE L’INTENSITÉ DANS MANON LESCAUT". Estudios Románicos 30 (29 de julio de 2021). http://dx.doi.org/10.6018/er.471211.
Texto completoTesis sobre el tema "Capteurs de Forces"
Cailliez, Jonathan. "Contributions à la modélisation et la commande de capteurs de forces actifs pour la méso et micro-robotique". Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS278.
Texto completoThis thesis focuses on the development of an original instrumentation, with performances beyond the state of the art, for the characterization and the measurement of forces at the small scales. The work covers the measurement of a wide range of forces involved in meso and micro-robotics, from intermolecular forces of the order of a few µN to forces at the Newton level. The focus lies in the development and implementation of sensors based on an active technology particularly adapted for the characterization of forces with a variable gradient thanks to a quasi-infinite sensor stiffness in closed loop. Three main contributions have been made. On the methodological aspect, a new robust hybrid control approach based on Eigen structure assignment has been proposed and experimentally validated for the robust characterization of intermolecular interaction forces using an Atomic Force Microscope (AFM). This characterization has allowed defining the basis of the specifications for the design and the control of active sensors better suited to finely characterize unstable areas in which the force gradients are important. The second contribution lies in the development, design, control and implementation of an original MEMS (Micro-Electro-Mechanical System) type active sensor with the particularity of having a linear electromechanical characteristic over its entire measurement range, i.e. +- 20 µN, with a bandwidth greater than 2kHz. The third contribution lies in the proposition of a new architecture for the active measurement of forces over ranges from mN to N based on a magnetic actuation and an air bearing. This sensor has been implemented for the measurement of magnetic forces with unstable areas when the distance between the sensor tip and the magnetic sample is below a certain threshold. The perspectives to this thesis are numerous in materials science, biology and more generally in physics. It particularly opens a new path in scientific research related to active AFM
Dreyfus, Rémi. "Filaments magnétiques : application à la conception de capteurs de forces et de nageurs microscopiques artificiels". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2005. http://tel.archives-ouvertes.fr/tel-00011193.
Texto completoLe premier chapitre décrit la conception d'un capteur de forces intercolloïdales. Nous présentons différentes expériences permettant de caractériser les particules utilisées. Nous décrivons ensuite la réalisation du montage expérimental et le traitement des données. Enfin, nous comparons cette technique aux autres techniques.
Le second chapitre décrit la conception et la réalisation de nageurs à l'échelle microscopique. Nous fabriquons des filaments magnétiques flexibles en alignant des particules sous l'effet d'un champ magnétique. Les particules adjacentes sont reliées par des agents pontants. Nous avons étudié le comportement de ces filaments sous champ. Sous l'effet d'un champ magnétique oscillant, le filament se déforme : une onde se propage alors le long du filament, ce qui engendre une force propulsive, dont nous démontrons l'effet sur un nageur spermatomorphe. Enfin, nous vérifions des prédictions théoriques antérieures.
Thirion, Adrien. "Algorithmes d'Intelligence Artificielle en temps réel sur cible embarquée avec des capteurs de ballistocardiographie de nouvelle génération". Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSEP056.
Texto completoArtificial intelligence is not a young discovery, but recent breakthroughs have led to its application in countless fields like medical diagnosis. The novel functionalities it provides can improve the diagnosis of certain challenging-to-predict disorders due to their transient nature, such as sleep disorders, drowsy driving, atrial fibrillation, or chronic stress. These disorders are challenging to detect because affected persons show very few symptoms. In addition, the aging population is moving towards dependency and medical structures lack caregivers.In this context, this work introduces a generic, precise, and unobtrusive vitals monitoring system, called Pulse. It relies on a strain sensor based on nanoparticles developed by the Nanomade startup and adapted for a BallistCardioGraphic (BCG) application in various types of equipment (e.g., a bed or vehicle seat). In addition, a specific software, named BCG-VARS, has been developed to achieve unique performances in simultaneous monitoring of various vital parameters. This real-time software consists in two algorithms that can be embedded. The first one is dedicated to presence detection, actimetry and Breath-to-Breath Interval (BBIs) measurement for each new sample. The second one is related to Inter-Beats Interval (IBIs) measurement using an innovative technique involving hyperparameters tuning and interval prediction on the whole heart pattern, significantly reducing measurement errors. When integrated into a medical bed, average absolute errors of 1.55 beats per minute for IBIs and 1.85 cycles per minute for BBIs were obtained, corresponding with the state-of-the-art which, at this level of performances though, does not offer a generic system.In addition, algorithms perfectly identified subjects' presences, and major movements (lying down, rolling over, or leaving) were detected by the algorithms.Thanks to the features and performances of Pulse system and BCG-VARS software, some Machine Learning (ML) models for medical functionalities have been implemented. All models have been designed to be applied in real-time, with the Pulse embedded solution. First, stress detection using ML techniques has been explored. An innovative algorithm, called VESLA (Variable and Embedded Stress Level Algorithm), has been developed to assess stress evolution. Despite binary nature labels in the dedicated database, VESLA can quantify multiple stress levels, adapting to the application requirements. This algorithm outperforms literature models, achieving an average accuracy of 94.1% with an open-access database. Secondly, Deep Learning (DL) models have been designed for sleep stage classification. Hyperparameters fit-tuning that maximizes system performances while minimizing model weight has been elaborated for the first time. Unlike literature models, these models are designed to be real-time and for short durations to avoid sleep inertia, even for short naps. Finally, prospects for measuring blood pressure with a single BCG sensor have also been explored, providing interesting perspectives for future research.Beyond the main focus of the thesis, several additional objectives have been achieved. Among them, a universal validation solution for any BCG system has been developed, including an easy-to-reproduce mechanical emulator, coherent and standard metrics and graphs for respiratory and cardiac signals, and open-access impulsion files to emulate multiple times the same scenario. Experimental results show waveform strong similarities with emulated data (correlation up to 0.82±0.12)
Karamanoukian, Alexandre. "Développement d'un outil de quantification de la charge mécanique en football à partir de crampons instrumentés de capteurs de force : vers une application à la prévention des blessures". Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPASW009.
Texto completoThe majority of injuries in football are non-contact injuries, with muscular strains being the most common. Fatigue and excessive training load are known risk factors, with injuries being most frequent at the end of matches and during overloaded weeks. Despite recent improvements in training load and fatigue monitoring, injury burden remained stable during the last two decades, raising questions about the efficiency of injury prevention strategies. More specifically, the lack of valid tools to estimate ground reaction forces (GRFs) and impacts sustained by players leads to an incorrect biomechanical load/fatigue estimation.The development of instrumented studs (IS) capable of recording on-field GRFs represent, therefore, a major breakthrough.The first step of this study was to assess the validity of a pair of football shoes fitted with IS. The results demonstrated that this tool is a highly valid device for obtaining on-field GRFs.The second aim of this study was to examine the kinetic and spatio-temporal parameters adaptations induced by an exhaustive on-field run at constant with the help of IS. Significant changes were found among all subjects, thus proving the usefulness of this tool to measure fatigue in situ. Results also demonstrated some large inter-individual variability.Finally, the third aim was to assess these changes among professional players throughout a competitive football season. The nature of these variations was then used to estimate biomechanical fatigue induced by training. Repeating this simple procedure throughout the year allowed us to better estimate players' biomechanical
Bernard, Julien. "Évaluation du profil biomécanique du coureur cycliste". Thesis, Poitiers, 2015. http://www.theses.fr/2015POIT2261/document.
Texto completoNumerous studies investigated and still investigate pedaling motion in cycling from a biomechanical point of view. These studies involve various fields, like technologic for improving the material which has considerably evolved, physiologic for physical capacities and energy efficiencies' improvement according to pedaling styles, and biomechanics for motion's expertise and pedaling efficiency in particularly. This work takes part in the last scientific field: the biomechanics of movement.This work received a call for proposals of the AFLD (Agence Française de la Lutte contre le Dopage) in order to: "[SIC] rearm regarding doping by adopting original and practical approaches, considering scientific environment of doped athletes" by focusing on the themes of "[SIC] Work, power and energy efficiency".In this context, the general objective of this work is the biomechanical evaluation of cyclist's profile in laboratory conditions. For this, an experimental platform has been validated and allowed us to follow two central issues i) How is created the force produced to the pedal? ii) What can be expected from a mechanical energy evaluation of pedaling motion? These two points are discussed through incremental protocol tests as required by the French Cycling Federation. The results were obtained on a cohort of Elite cyclists
Yong, Julien. "Contribution à l'étude d'un capteur de force piézoélectrique résonant à forte raideur pour interfaces haptiques aéronautiques". Toulouse 3, 2013. http://thesesups.ups-tlse.fr/1958/.
Texto completoThis thesis is part of the research project GASVT (Artificial Generation of Visual and Tactile Sensations) on the theme of human / machine interface, implemented by the company Ratier-Figeac in the competitiveness cluster Aerospace Valley. The objective is then to answer to a request for aerospace supplier who wishes to acquire the technology currently active flight controls (joystick driver), allowing the pilot to have a visual and tactile feeling of the path of an aircraft. In the driveline, the force feedback is essential since it allows to provide the information necessary for torque control of the handle. The objective of the study was focused on the realization of a piezoelectric sensor based on the principle of a resonant transducer where the variation of stress is associated with changes on the resonant frequency of the transducer through the change of the mechanical impedance. Based on this principle, a sensor for measurement of forces in tension and compression was studied. This sensor must also reach a high stiffness compatible with the loop force feedback system and power failure of the electric embedded network. Finally, in order to meet the requirements of the application, a sensor dedicated to aeronautical applications (rod instrumentation), ensuring redundancy (sensor triplex) has been studied, performed and characterized. The thesis then concerns the definition of sensor structures for three measures of independent efforts, combined with the power electronics and control necessary for the transcription of the change in resonant frequency of the actuator into a signal effort reflecting the tension and compression. Command control modes should also be taken into account in the overall mechatronic approach
Huard, Mathieu. "Modélisation géométrique et reconstruction de formes équipées de capteurs d'orientation". Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENM090/document.
Texto completoThis PhD thesis in applied mathematics was conducted within the Electronic Systems andSensors department of the CEA-Leti (Atomic Energy and Alternative Energies Commission - Laboratory for Electronics and Information Technologies), a major organism for technological research located in Grenoble, France. This work originated from a partnership with the applied mathematics laboratory (LJK) of the Joseph Fourier university (UJF). The Leti develops embedded systems equiped with micro-sensors (magnetometers, accelerometers...) from which it is possible to retrieve informations about their spatial orientation. These systems allow for innovative applications in the field of shape acquisition and reconstruction. The problem of reconstructing surfaces from unstructured orientation data is ill-posed. However, previous work done within the Leti came up with a valid reconstruction protocol. The micro-sensors were integrated into the Morphosense ribbon : this flexible ribbon instrumented with sensor knots according to a known geometry is at the core of a number of reconstruction algorithms for the curves followed by the ribbon. When lied on a physical surface, Morphosense ribbons then allow the acquisition and reconstruction of a network of curves on the surface, that are then used for the reconstruction of the entire surface. We first propose new algorithms for curve reconstruction thanks to the Morphosense ribbon. Those new methods now integrate the orientation informations provided by the sensors in their entirety, as well as the mechanical properties of the ribbon that force it to follow geodesic curves on a surface. From this point of view, the curve reconstruction can be considered optimal, as it integrates all the information embedded in the ribbons' structure. We then study a set of methods for the reconstruction of surfaces using a network of ribbon curves. Such a network generally leads to problems linked to the closure of the network and missing data estimation. The closure of the network is essentially a numerical problem related to differential constraints. The missing data corresponds to the lack of information on the surface outside the network of curves. In order to deal with these problems and propose practical solutions for the reconstruction, hypotheses either on the surface models or the topology of the network of curves are required. Therefore, the developed methods fall within the two following approaches.– On the one hand, reconstruction methods for developable and quasi-developable surfaces, which are a good approximation for the surfaces considered in numerous applications.– On the other hand, reconstruction methods from networks of curves with specific topologies (quasi-planar curves, open network) so as to deal with the closure problem.The set of methods developed in this work allow to formulate a global process for the reconstruction of surfaces, with flexible algorithms adapting to the different practical situations, so as to propose a solution both simple and precise in each case. The validation of our results in the case of real sensors data provided by the Morphosense ribbons also led us to develop metrological device. Finally, notice that the general context of reconstruction from orientation data studied here raises original theorical problems, to which we tried to answer with innovative solutions through interpolation and optimization algorithms
Weill-Duflos, Antoine. "Interfaces et capteurs pour une chaine de micro-téléopération". Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066147/document.
Texto completoTeleoperation opens up new possibilities for interaction with the micro-world. Adequate systems make it possible for human to manipulate elements on microscopic scales. An added haptic feedback provides information crucial for a natural interaction. A bilateral coupling between the subsystems offers the best haptic transparency. This thesis addresses the design of a complete haptic teleoperation chain by focusing on its key elements. Three parts are detailed: The first part describes improvements of the high fidelity one degree of freedom haptic interface designed previously. First, the precision of the forces produced is improved. This improvement is related to the measurement of the motor velocity at high sampling frequencies. Then, the device is precisely caracterized. The second part describes the design of two new force sensors designed specifically for interactions with the micro-world. The forces are measured by compensation. Two approach are observed to expand the frequencies of forces measurable by the sensors. First approach try to reduce the mass, a new sensor on a micrometric scale is built with MEMS technologies. The second approach offer a new design of the sensor. In particular, the stiffness in the guidance is removed. The third part describes the design of a new haptic interface with multiple degrees of freedom. This interface combines the performances of the one degree of freedom interface with a 2D configuration. The key elements of its design are the an air bearing for frictionless guidance and linear induction motors for reduced inertia
Chabour, Ferhat. "Commande sans capteur de position d'une machine synchrone à rotor bobiné : application à l'alterno-démarreur séparé StARS". Compiègne, 2007. http://www.theses.fr/2007COMP1705.
Texto completoValeo Company produces for the automotive industry several synchronous machines intended to operate either in starter mode or in alternator mode. One of the manufactured machines is the Starter-Alternator Reversible System (StARS) that is a wound rotor belt-driven machine. Actually, StARS is supplied by a full-wave voltage inverter and its self-commutation is controlled by an integrated shaft-mounted position sensor. The removal of the latter is a very promising passage. In addition to the suppression of the costs due to the sensor and its installation, the elimination of the sensor's wiring improves the reliability and the robustness of the system. The main purpose of this thesis is to investigate the StARS sensorless control. At zero speed, initial rotor position detection and motor parameter identification are presented. In medium and high speed range, the sensorless operation of the StARS is based on the estimation of the machine rotational electromotive forces. At low speed, the rotor position is detected by estimating the stator flux which is obtained by integration of the measured back electromotive force. The proposed sensorless control can perform a switchover from starting to sensorless open-loop operation. It has a simple structure and uses two current sensors. Experimental results are presented to demonstrate the successful operation of the investigated sensorless method
BUEB, JEAN-LUC. "Mesures de contractions d'organes in vitro : evolution des capteurs de force, et comparaison de 2 modeles de capteurs isometriques". Strasbourg 1, 1987. http://www.theses.fr/1987STR10737.
Texto completoLibros sobre el tema "Capteurs de Forces"
vacances, Edition cahiers. Cahier de Vacances Spécial écriture Maternelle - CP les Nombres les Formes l'Alphabet de a à Z Conforme Au Programme: Un Cahier Pour Apprendre en S'amusant l'Alphabet, les Chiffres et les Formes Avec des Images en Couleur Pour Capter l'attention Format A4. Independently Published, 2020.
Buscar texto completoCapítulos de libros sobre el tema "Capteurs de Forces"
Pairot de Fontenay, Patrick y Jean-Claude Prigent. "10 • Capteurs de force, pesage, couple". En Les capteurs en instrumentation industrielle, 489–544. Dunod, 2017. http://dx.doi.org/10.3917/dunod.asch.2017.01.0489.
Texto completoGirouard, DMD MS, Patrick. "Understanding Posturo-Occlusal Interrelationships by Combining Digital Occlusal and Posture Diagnostic Technologies". En Advances in Medical Technologies and Clinical Practice, 1175–242. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9254-9.ch017.
Texto completoActas de conferencias sobre el tema "Capteurs de Forces"
Portier, Jean-Louis, Arnaud Sabaté, Jocelyn Périsse y Raymond Buisson. "Etalonnage de capteurs de force et de déplacement pour mesures en sodium liquide à partir de la temperature ambiante jusqu’à 350 °c et exemples de résultats". En 17th International Congress of Metrology, editado por Bernard Larquier. Les Ulis, France: EDP Sciences, 2015. http://dx.doi.org/10.1051/metrology/20150004006.
Texto completoFurukawa, Patrícia de Oliveira, sabel Cristina Kowal Olm Cunha y Mavilde Pedreira. "Softwares para a promoção da sustentabilidade na gestão em saúde". En Simpósio Internacional Programa de Pós-Graduação em Enfermagem : ciência, sustentabilidade e integralidade no caminha da saúde. Universidade Estadual de Campinas, 2024. http://dx.doi.org/10.20396/sippgenf.3.e023022.
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