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Дисертації з теми "Capteurs de force – Modèles mathématiques"
Robert, Alain. "Commande hybride position-force : mise en œuvre et expérimentation sur un micro-manipulateur parallèle." Toulouse, ENSAE, 1986. http://www.theses.fr/1986ESAE0009.
Повний текст джерелаAl, Harrach Mariam. "Modeling of the sEMG / Force relationship by data analysis of high resolution sensor network." Thesis, Compiègne, 2016. http://www.theses.fr/2016COMP2298/document.
Повний текст джерелаThe neuromuscular and musculoskeletal systems are complex System of Systems (SoS) that perfectly interact to provide motion. This interaction is illustrated by the muscular force, generated by muscle activation driven by the Central Nervous System (CNS) which pilots joint motion. The knowledge of the force level is highly important in biomechanical and clinical applications. However, the recording of the force produced by a unique muscle is impossible using noninvasive procedures. Therefore, it is necessary to develop a way to estimate it. The muscle activation also generates another electric phenomenon, measured at the skin using electrodes, namely the surface electromyogram (sEMG). ln the biomechanics literature, several models of the sEMG/force relationship are provided. They are principally used to command musculoskeletal models. However, these models suffer from several important limitations such lacks of physiological realism, personalization, and representability when using single sEMG channel input. ln this work, we propose to construct a model of the sEMG/force relationship for the Biceps Brachii (BB) based on the data analysis of a High Density sEMG (HD-sEMG) sensor network. For this purpose, we first have to prepare the data for the processing stage by denoising the sEMG signals and removing the parasite signals. Therefore, we propose a HD-sEMG denoising procedure based on Canonical Correlation Analysis (CCA) that removes two types of noise that degrade the sEMG signals and a source separation method that combines CCA and image segmentation in order to separate the electrical activities of the BB and the Brachialis (BR). Second, we have to extract the information from an 8 X 8 HD-sEMG electrode grid in order to form the input of the sEMG/force model Thusly, we investigated different parameters that describe muscle activation and can affect the relationship shape then we applied data fusion through an image segmentation algorithm. Finally, we proposed a new HDsEMG/force relationship, using simulated data from a realistic HD-sEMG generation model of the BB and a Twitch based model to estimate a specific force profile corresponding to a specific sEMG sensor network and muscle configuration. Then, we tested this new relationship in force estimation using both machine learning and analytical approaches. This study is motivated by the impossibility of obtaining the intrinsic force from one muscle in experimentation
Munir, Muhammad Farukh. "Optimisation inter-couche de réseaux de capteurs et capteurs-actionneurs sans fil." Paris, ENST, 2009. http://www.theses.fr/2009ENST0039.
Повний текст джерелаDami, Mohamed Ali. "Conception de machines de tests de caractérisation dynamique en induction trapézoidale, pour modélisation du comportement des tôles magnétiques utilisées dans la construction électrique." Dijon, 1993. http://www.theses.fr/1993DIJOS055.
Повний текст джерелаGilis, Martine. "Capteurs et biocapteurs électrochimiques pour le suivi des fermentations." Toulouse 3, 1996. http://www.theses.fr/1996TOU30243.
Повний текст джерелаDron, Paul Ionut. "Cyclopyridinophanes, capteurs moléculaires : synthèse, structure et propriétés électriques." Littoral, 2007. http://www.theses.fr/2007DUNK0178.
Повний текст джерелаThis thesis reports the synthesis of cyclo(bis-paraquat p-phenylene p-phenylene-carbonyle) tetrakis(hexapluorophosphate) (« CETEBOX »). This one exists in three tautomeric structures proved by NMR spectra, potentiometric titration and synthesis. Through its cycloimmonium ylide, in a [3+2] cycloaddition reaction, this compound furnishes a fluorescent cyclophane sensor. This sensor shows inclusion properties towards Volatile Organic Compounds. By a coupling reaction between the fluorescent indolizine sensor and 6-deoxy-6-amine-β-cyclodextrin a new dual cavity (β-cyclodextrine et cyclophane) fluorescent sensor is synthetized. All new structures reported in this thesis have been established by IR, RMN (1H-RMN, 13C-RMN, TOCSY, COSY, NOESY, HMQC). According to the molecular modeling methods (MM3, AM1, AM1-COSMO, B88LYPDFT), the found most stable conformers are in good agreement with the experiments. Using a bis(paraquat) salt a new Palladium multicavities complex has been synthetized. The electrical properties of the newly synthetized cyclopyridinophanes have been established by measurements of the electrical conductivity at different temperatures and frequencies. Two of them show very interesting properties concerning conversion of light energy into thermal energy
Wei, Chen. "Static force capabilities and dynamic capabilities of parallel mechanisms equipped with safety clutches." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/24810.
Повний текст джерелаThis thesis investigates the force capabilities of two-degree-of-freedom planar parallel mechanisms that are equipped with safety clutches (torque limiters). The force capabilities are studied based on the Jacobian matrices. The maximum force that can be applied at the end-effector for given torque limits (safety index) is determined together with the maximum isotropic force that can be produced. The ratio between these two forces, referred to as the force effectiveness, can be considered as a performance index. Finally, some numerical results are proposed which can provide insight into the design of cooperation robots based on parallel architectures. Considering each link and slider system as a single body, approximate dynamic models are derived based on the Newton-Euler approach and Lagrange equations for the tripteron and the quadrupteron. The acceleration range or the external force range of the end-effector are determined and given as a safety consideration with the dynamic models.
Bonzom, Pierre. "Etude, simulation et réalisation de capteurs d'inspiration animale." Montpellier 2, 1998. http://www.theses.fr/1998MON20105.
Повний текст джерелаFaucheux, Sébastien. "Identification paramétrique des capteurs d'accélération angulaire chez l'Homme." Université Louis Pasteur (Strasbourg) (1971-2008), 2003. http://www.theses.fr/2003STR13035.
Повний текст джерелаThe identification of the mechanical characteristics of semicircular canals (SCC) of the inner ear of Man interests clinicians, in the case of balance disorders, as much as fluid mechanics. Identifying directly these characteristics for horizontal SCC is made impossible due to the presence of a "velocity storage" mechanism in the vestibulo-ocular reflex linked to them. Studies based on visual testing seem to prove that such a mechanism does not exist for vertical SCC. The originality of the present study consists in a procedure which excites the vertical canals. The head of the subject is tilted in such a way that one pair of vertical canals is in the stimulation plane of a rotating chair around the vertical axis. Eye movements were recorded via video-nystagmography. We have applied a new method of parametric identification in time domain. Convergence is reached when the set composed of the physical system and the parameterized model is stable according to Liapunov theory. This is guaranteed by a criterion based on the difference of one state value between them. This criterion separates parameter differences and state variable differences in an appropriate Liapunov function. This is done without the MKY lemma. A great part of the thesis job was to develop this method. The identification results have been compared with those of a minimum square fit of a model on the numerical transfer function. Concordant results prove the validity of our method on noisy recordings. Identified time constant values trend to demonstrate that there is,indeed, a "velocity storage" mechanism for vertical SCC. This mechanism hinders estimates of their mechanical parameters, from input/ouput recordings, with a frequency scanning method
Gogu, Ada. "Dimensionnement des réseaux RCSF sous des contraintes énergétiques : modèles mathématiques et méthodes d'optimisation." Compiègne, 2012. http://www.theses.fr/2012COMP2028.
Повний текст джерелаIn this thesis, we focused on the development of optimal methods regarding WSN dimensioning problems, mostly encountered during the planning phase. These were instantiated basically into three combinatorial optimization problems. The network deployment scheme which seeks to place the sensors in a such way that the cost of communication operations is minimized. The network configuration problem that asks to find a strategy for dividing the network such that some criteria are satisfied. In the problem’s model we took into account the data aggregation constraint and the discrete values of power transmission. For both problems we proposed a resolution method, based on dynamic programming, which permitted us to solve them optimally. Finally, the joint problem of scheduling and power assignment, consisted in finding a feasible scheduling under SINR constraints and a power assignment scheme to guarantee successful concurrent transmissions. As the problem is shown to be NP-hard we propose a greedy heuristic. The resolution method for the power assignment strategy, an iterative algorithm based on linear programming, provides optimal solutions
Книги з теми "Capteurs de force – Modèles mathématiques"
Gordon, Jeffrey M., and Roland Winston. Nonimaging optics: Efficient design for illumination and solar concentration VIII : 21-22 August 2011, San Diego, California, United States. Edited by SPIE (Society). Bellingham, Wash: SPIE, 2011.
Знайти повний текст джерелаWinston, Roland, Lun Jiang, and Vladimir Oliker. Nonimaging Optics: Solar and Illumination System Methods, Design, and Performance. Taylor & Francis Group, 2020.
Знайти повний текст джерелаWinston, Roland, Lun Jiang, and Vladimir Oliker. Nonimaging Optics: Solar and Illumination System Methods, Design, and Performance. Taylor & Francis Group, 2020.
Знайти повний текст джерелаGordon, Jeffrey, and Roland Winston. Nonimaging Optics: Efficient Design for Illumination and Solar Concentration X. SPIE, 2013.
Знайти повний текст джерелаGordon, Jeffrey, and Roland Winston. Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XI. SPIE, 2014.
Знайти повний текст джерелаNonimaging Optics: Solar and Illumination System Methods, Design, and Performance. Taylor & Francis Group, 2020.
Знайти повний текст джерелаGordon, Jeffrey, and Roland Winston. Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XII. SPIE, 2015.
Знайти повний текст джерелаWinston, Roland, and Sarah Kurtz. Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XIV. SPIE, 2017.
Знайти повний текст джерелаWinston, Roland, Lun Jiang, and Vladimir Oliker. Nonimaging Optics: Solar and Illumination System Methods, Design, and Performance. Taylor & Francis Group, 2020.
Знайти повний текст джерелаWinston, Roland, Juan C. Minano, Pablo G. Benitez, and With contributions by Narkis Shatz and John C. Bortz. Nonimaging Optics. Elsevier Science & Technology Books, 2005.
Знайти повний текст джерелаЧастини книг з теми "Capteurs de force – Modèles mathématiques"
KRYSANDER, Mattias, and Erik FRISK. "Analyse structurelle." In Diagnostic et commande à tolérance de fautes 1, 87–114. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9058.ch2.
Повний текст джерела