Littérature scientifique sur le sujet « Couple orbital de rotation »
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Articles de revues sur le sujet "Couple orbital de rotation"
Bolmont, E., F. Gallet, S. Mathis, C. Charbonnel, L. Amard et Y. Alibert. « Tidal dissipation in rotating low-mass stars and implications for the orbital evolution of close-in massive planets ». Astronomy & ; Astrophysics 604 (août 2017) : A113. http://dx.doi.org/10.1051/0004-6361/201730662.
Texte intégralPezzotti, C., P. Eggenberger, G. Buldgen, G. Meynet, V. Bourrier et C. Mordasini. « Revisiting Kepler-444 ». Astronomy & ; Astrophysics 650 (juin 2021) : A108. http://dx.doi.org/10.1051/0004-6361/202039652.
Texte intégralDaley, Thomas M., et Dale Cox. « Orbital vibrator seismic source for simultaneous P‐ and S‐wave crosswell acquisition ». GEOPHYSICS 66, no 5 (septembre 2001) : 1471–80. http://dx.doi.org/10.1190/1.1487092.
Texte intégralLindh, Grant D., Taylor J. Mach et T. Daniel Crawford. « The optimized orbital coupled cluster doubles method and optical rotation ». Chemical Physics 401 (juin 2012) : 125–29. http://dx.doi.org/10.1016/j.chemphys.2011.11.002.
Texte intégralLi, Liang, et Yiqiu Mao. « On Dynamics of Double-Diffusive Convection in a Rotating Couple-Stress Fluid Layer ». Mathematics 12, no 7 (28 mars 2024) : 1017. http://dx.doi.org/10.3390/math12071017.
Texte intégralYeomans, D. K. « Cometary Orbital Dynamics and Astrometry ». International Astronomical Union Colloquium 116, no 1 (1989) : 3–17. http://dx.doi.org/10.1017/s0252921100109613.
Texte intégralGallet, F., E. Bolmont, J. Bouvier, S. Mathis et C. Charbonnel. « Planetary tidal interactions and the rotational evolution of low-mass stars ». Astronomy & ; Astrophysics 619 (novembre 2018) : A80. http://dx.doi.org/10.1051/0004-6361/201833576.
Texte intégralFelker, Peter M. « Nuclear-orbital/configuration-interaction study of coupled translation-rotation states in (H2)2@C70 ». Journal of Chemical Physics 138, no 4 (28 janvier 2013) : 044309. http://dx.doi.org/10.1063/1.4776262.
Texte intégralBorre, C. C., D. Baade, A. Pigulski, D. Panoglou, A. Weiss, Th Rivinius, G. Handler et al. « Short-term variability and mass loss in Be stars ». Astronomy & ; Astrophysics 635 (mars 2020) : A140. http://dx.doi.org/10.1051/0004-6361/201937062.
Texte intégralBelokonov, I. V., I. A. Timbai, P. N. Nikolaev et U. M. Orazbaeva. « Analysis of SamSat-218D nanosatelite motion acording to trajectory measurements ». VESTNIK of Samara University. Aerospace and Mechanical Engineering 18, no 4 (21 janvier 2020) : 18–28. http://dx.doi.org/10.18287/2541-7533-2019-18-4-18-28.
Texte intégralThèses sur le sujet "Couple orbital de rotation"
Guo, Zongxia. « Electrical and optical manipulation of exchange bias ». Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0204.
Texte intégralThe rapid growth in scale and complexity of neural network architectures in today's machine learning and artificial intelligence applications is creating a significant demand for advanced hardware solutions. The semiconductor industry is actively seeking next-generation storage technologies that can offer improved speed, density, power consumption, and scalability. One such technology that shows great promise for high-performance data storage and processing is magnetoresistive random access memory (MRAM), which stores information in the magnetic state of materials. However, with the continuous requirement of high-density and ultrafast scenarios, antiferromagnet as the basic unit of MRAM shows obvious advantages. Antiferromagnetic materials have negligible macroscopic magnetism, making them highly robust to external magnetic fields. This property also allows for the absence of dipole interactions between adjacent bits, enabling higher-density integration. Additionally, antiferromagnetic materials exhibit high-frequency dynamics up to the terahertz range, theoretically enabling faster write speeds than ferromagnetic devices. However, such fully compensated magnetic moments make the magnetization state of the antiferromagnetic material difficult to manipulate and detect by traditional electrical methods. In this thesis, we demonstrate the antiferromagnetic exchange bias switching in three-terminal magnetic tunnel junctions and achieve electrical detection of antiferromagnetism by the tunnelling magnetoresistance with a ratio over 80%, which is two orders larger than previous methods. This is achieved by imprinting the state of antiferromagnet IrMn on the CoFeB free layer. We further realize current polarity-dependent switching, rather than current orientation-dependent switching of IrMn down to 0.8 ns. We identify two switching mechanisms, the heating mode and the spin-orbit torque driven mode, depending on the current pulse width. The latter case is supported by numerical simulations, which suggest that spin-orbit torque generated by Pt induces the precession of IrMn and exchange coupling at the IrMn/CoFeB interface determines the switching polarity of IrMn. Furthermore, to break the ferromagnetic and electrical write speed limit and further explore the antiferromagnetic switching speed, we experimentally realize exchange bias switching by a single femtosecond laser pulse. In the IrMn/CoGd structure, the perpendicular exchange bias is investigated for different IrMn thicknesses and CoGd concentrations. Using the optimized structure, the exchange bias was switched under a single femtosecond laser, and the dependence of the exchange bias variations with different laser fluence and pulse numbers was detailed investigated. The pump-probe time-resolved measurement is used to demonstrate the exchange bias switching time scale of less than 100 ps. The grain structure of polycrystalline IrMn films and the amorphous state of CoGd alloy layers are accurately described using atomistic simulations. The IrMn exhibits a faster demagnetization than ferromagnetic materials and each IrMn grain remagnetizing to a single-domain state in only 2 ps. In addition, the different grains of IrMn exhibit independent and stochastic probabilistic switching in the ultrafast time scale. The electrical and all-optical manipulation of exchange bias system allows ultrafast, field-free and energy-efficient control of antiferromagnet with high ordering temperature and thermal stability, making it highly suited to applications
Urbina, Iglesias Laura Sofia. « Guidance and robust control methods for the approach phase between two orbital vehicles with coupling between translational and rotational motions ». Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30086/document.
Texte intégralThe techniques related to formation flying and proximity operations of autonomous satellites belong to the most significant and challenging operational space technologies of the last years. In particular, they require full mastery of the close-range rendezvous and observation phases by an active satellite with a passive satellite, station or debris. The development of efficient and safe associated GNC systems relies on the knowledge of a dynamic model that achieves a good trade-off between low complexity and sufficient inclusion of the main dynamic and kinematic characteristics of this type of systems.The first part of this thesis is devoted to the development of a unified modeling of the relative coupled dynamics between a cooperative chaser satellite and a non-cooperative target satellite. Indeed, when two satellites are close to each other, they can no longer be treated as point masses because their shape and size affect the relative motion between the decentralized points, leading to a translational-attitude motions coupling. This development is addressed in a progressive way: the relative nonlinear translational motion is described under Keplerian assumptions in the target's orbital reference frame, as well as the associated linearized model. Then, the nonlinear relative attitude model is presented by means of the Euler-Rodrigues parameters. Finally, the dual quaternion formalism is used to obtain the relative translational and attitude coupled model. The modeling phase concerning the linear relative translational motion has allowed us to highlight certain coordinates transformations leading to an interesting characterization of the chaser's periodic trajectories and thus, to propose a first type of control law for the close-phase rendezvous and observation phases.All along this work, we consider a chaser satellite equipped with chemical thrusters under the classical hypothesis of impulsive thrusts. This type of dynamic systems gathering continuous dynamics and impulsive control naturally belongs to a particular class of dynamical hybrid systems. Several hybrid control laws are then proposed in order to stabilize the chaser on a periodic reference trajectory close to the target. The stability and convergence properties of these different laws are analysed and several numerical simulations show the strengths and weaknesses of each controller in terms of performance indices such as convergence time, consumption and safety constraints. In a second step, additional operational constraints (line-of-sight constraints for example) are taken into account by imposing a rectilinear (glideslope) direction to the chaser. This trajectory requires the chaser satellite to follow a straight line in any direction of the local reference frame and connecting the current location of the chaser to its final destination. Under the impulsive propulsion assumptions, the results in the literature for this type of approach have been generalized to elliptic orbits by identifying a new formulation of the problem including useful degrees of freedom, which allow minimizing the fuel consumption while controlling the humps of the trajectory outside the glideslope line by enclosing it in a user-defined approach corridor. Guidance laws are therefore synthetized via the solution of an SDP optimisation problem in the general case and via a linear programming when considering standard cases like the V-bar or R-bar approaches
Alli, Soklni-Sita. « Modélisation et optimisation sur cycle d'une génératrice doublement saillante faible vitesse de rotation pour hydrolienne ». Thesis, Nantes, 2019. http://www.theses.fr/2019NANT4002/document.
Texte intégralThis study deals with a doubly salient permanent magnet machine, used in direct drive for tidal application. First, different technological approaches used for tidal power generation are reviewed. Then, the generator is modelled by circuit approach. This method allows for magnetic saturation and airgap variation to be taken into account, while offering an interesting compromise between the accuracy of the results and the simulation time. The DSPM model is then coupled with its converter. A thermal model is also implemented. This model is then used to optimize simultaneously the DSPM teeth and its control parameters in order to maximize the torque and reduce its ripples which are important in salient machines. The control parameters are also optimized on a tidal cycle. The first criterion to be minimized on cycle is the torque ripples. Joule losses are added as a second criterion and Pareto fronts are deduced and analyzed. Finally, tests at no-load and also at load operations on a prototype 2 kW, 50 rpm validate the theoretical model developed
Szlabowicz, Wojciech. « Contribution au dimensionnement et à la réalisation d'actionneur piézoélectrique à rotation de mode fort couple pour applications aéronautiques ». Toulouse, INPT, 2006. http://ethesis.inp-toulouse.fr/archive/00000337/.
Texte intégralPresent research deals with the aim of work on the Future of Flight Control (Market COVAN) of the AIRBUS France company. If the potential interest of the piezoelectric motors in the high power aeronautic applications were previously shown, the general objective of the study is now to concretize in an operationg actuator the introduction of this technology. The study deals to the design, the realization and the characterization of a rotating-mode piezoelectric actuator with a double rotor, dedicated electronic power supply, with aim to the Trim application. The performances obtained show the interest of this technological solution because of the torque/mass ratio obtained approximately in the range 8 N. M/kg, witch is a very interesting parameter in the field of the embedded applications
Szlabowicz, Wojciech Nogarède Bertrand Rouchon Jean-François. « Contribution au dimensionnement et à la réalisation d'actionneur piézoélectrique à rotation de mode fort couple pour applications aéronautiques ». Toulouse : INP Toulouse, 2006. http://ethesis.inp-toulouse.fr/archive/00000337.
Texte intégralZhao, Hongming. « ETUDE EXPERIMENTALE DE LA PROPRIETE DE COUPLAGE SPIN-ORBITE DANS DES STRUCTURES SEMI-CONDUCTRICES DE BASSE DIMENSIONALITE ». Phd thesis, Université de Grenoble, 2010. http://tel.archives-ouvertes.fr/tel-00595906.
Texte intégralNelson, Michael R. Jr. « Ab initio molecular orbital studies : Rydberg states of H₄ barriers to internal rotation studies binding of CO₂ to carbonyl groups isoprene and ozone complexes ». Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/30278.
Texte intégralDiemer, Franck. « Utilisation en rotation continue des instruments de préparation canalaire en nickel-titane : évaluation des contraintes ». Toulouse 3, 2006. http://www.theses.fr/2006TOU30283.
Texte intégralChegroun, Nouara. « Etude numérique des actions hydrodynamiques sur une sphère en translation et rotation dans la gamme des nombres de Reynolds inferieurs à 50 ». Vandoeuvre-les-Nancy, INPL, 1992. http://www.theses.fr/1992INPL122N.
Texte intégralGomez, Chirinos José Luis. « Angle modeling of a rotating machine. Application to wind turbine surveillance ». Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI067/document.
Texte intégralThis work has been developed within the framework of non-stationary rotating machinery surveillance with emphasis on the detection of roller bearing defects. It focuses on the modeling and analysis of instantaneous angular speed variations. The numerical models developed are based on an ``angular" approach which introduces explicitly the machine's free body rotation degrees of freedom allowing simulations in non stationary operating conditions. A deep groove ball bearing model has been developed coupling tangential and normal forces by taking into account the rolling resistance phenomenon. This coupling allows to explain the origin of angular speed fluctuations in the presence of outer race roller bearing defects, phenomena that has been observed experimentally: a roller bearing defect periodically modifies the friction torque. The description of the gear mesh has been performed by means of a classic approach where the scientific issue has been to verify the compatibility with the angular modeling, cornerstone of this dissertation. Integration of the roller bearing and the gear modeling approaches into a simple mechanical architecture has shown that the presence of bearing defects provoking variations in the rolling element-races normal forces, modifies the gear mesh forces leading to perturbations of the angular speed. A simplified wind turbine model has been used for the test and validation of non stationary surveillance spectral indicators. The robustness of the model has been shown by means of a comparison with measurements performed on a wind turbine. It has allowed to show the importance of the operating conditions (load and speed), on the level of indicators used. This means the model may be used as a tool for phenomenological analyses as well as a device to test surveillance indicators. If needed, the approaches presented may be easily extended into more complex models of bearings, gears, casings and foundations
Livres sur le sujet "Couple orbital de rotation"
Buglia, James J. Direct computation of orbital sunrise or sunset event parameters. [Washington, DC] : National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1986.
Trouver le texte intégralWigg, Alison. Molecular orbital studies of large molecules : Internal rotation in the monofluorobenaldehydes. Salford : University of Salford, 1989.
Trouver le texte intégralMann, Peter. Introductory Rotational Dynamics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198822370.003.0003.
Texte intégralEriksson, Olle, Anders Bergman, Lars Bergqvist et Johan Hellsvik. Applications of Density Functional Theory. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198788669.003.0003.
Texte intégralValenzuela, S. O. Introduction. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198787075.003.0011.
Texte intégralCao, Gang, et Lance DeLong. Physics of Spin-Orbit-Coupled Oxides. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780199602025.001.0001.
Texte intégralChapitres de livres sur le sujet "Couple orbital de rotation"
Malament, David B. « On Relative Orbital Rotation in Relativity Theory ». Dans Revisiting the Foundations of Relativistic Physics, 175–90. Dordrecht : Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0111-3_8.
Texte intégralKéchichian, Jean Albert. « Effect of Atmospheric Drag Perturbation on Circular Orbits : Atmosphere Rotation Considerations ». Dans Orbital Relative Motion and Terminal Rendezvous, 171–246. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64657-8_5.
Texte intégralLainey, V., et A. Vienne. « Rotation of Natural Shaped Satellites and Their Orbital Motion ». Dans Modern Celestial Mechanics : From Theory to Applications, 407–10. Dordrecht : Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-2304-6_31.
Texte intégralBinder, Bernd. « Dynamic Localized Autonomous Chaotic Orbital Patterns from Rotation-Translation Sequences ». Dans 14th Chaotic Modeling and Simulation International Conference, 45–54. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-96964-6_4.
Texte intégralFukushima, Kenji, et Shi Pu. « Relativistic Decomposition of the Orbital and the Spin Angular Momentum in Chiral Physics and Feynman’s Angular Momentum Paradox ». Dans Strongly Interacting Matter under Rotation, 381–96. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71427-7_12.
Texte intégralMaugin, Gérard A. « C : From “Capillarity” to “Couple Stress (in Medium with Constrained Rotation)” ». Dans Advanced Structured Materials, 37–56. Singapore : Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2434-4_4.
Texte intégralHussmann, Hauke, Gaël Choblet, Valéry Lainey, Dennis L. Matson, Christophe Sotin, Gabriel Tobie et Tim Van Hoolst. « Implications of Rotation, Orbital States, Energy Sources, and Heat Transport for Internal Processes in Icy Satellites ». Dans Satellites of the Outer Solar System, 315–46. New York, NY : Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7439-6_12.
Texte intégralBohra, Nafeesa, Hermann De Meer et Aftab A. Memon. « Analysing the Orbital Movement and Trajectory of LEO (Low Earth Orbit) Satellite Relative to Earth Rotation ». Dans Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 1–11. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04260-7_1.
Texte intégralGaustad, Edwin S. « The Nature of True--and Useful-Virtue : From Edwards to Franklin ». Dans Benjamin Franizlin, Jonathan Edwards, And The Representation Of American Culture, 42–57. Oxford University PressNew York, NY, 1993. http://dx.doi.org/10.1093/oso/9780195077759.003.0004.
Texte intégral« Orbital Rotation ». Dans The Dwarf, 102–16. University of Hawaii Press, 2017. http://dx.doi.org/10.1515/9780824864699-006.
Texte intégralActes de conférences sur le sujet "Couple orbital de rotation"
Maråk, Rasmus, Emmanuel Blazquez et Pablo Gómez. « Trajectory Optimization of a Swarm Orbiting 67P/Churyumov-Gerasimenko Maximising Gravitational Signal ». Dans ESA 12th International Conference on Guidance Navigation and Control and 9th International Conference on Astrodynamics Tools and Techniques. ESA, 2023. http://dx.doi.org/10.5270/esa-gnc-icatt-2023-057.
Texte intégralAfanasjev, V. V. « Soliton polarization rotation in fiber lasers ». Dans Nonlinear Guided Waves and Their Applications. Washington, D.C. : Optica Publishing Group, 1995. http://dx.doi.org/10.1364/nlgw.1995.nfa4.
Texte intégralValverde, J., J. L. Escalona, J. Domi´nguez et E. Freire. « Stability and Dynamic Analysis of the SET (Short Electrodynamic Tether) ». Dans ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/vib-48323.
Texte intégralHaselsteiner, Andreas F., Aljoscha Sander et Klaus-Dieter Thoben. « A Three Degrees of Freedom Vibration Model for a Partially Installed Wind Turbine ». Dans ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-79081.
Texte intégralHuang, Lu, Yunfeng Jin et Yuqiang Jiang. « Ultrafast orbital rotation in optical trapping with a femtosecond laser ». Dans Optical Trapping Applications. Washington, D.C. : OSA, 2017. http://dx.doi.org/10.1364/ota.2017.ots1d.5.
Texte intégralAnderson, Alexander Q., Elizabeth F. Strong, Sean C. Coburn, Gregory B. Rieker et Juliet T. Gopinath. « Dual Comb Ranging and Rotation Sensing with Orbital Angular Momentum ». Dans CLEO : Science and Innovations. Washington, D.C. : Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_si.2022.sf2f.4.
Texte intégralMatloff, Gregory L. « The Holographic Solar Photon Thruster (SPT) : A Low-Earth Orbit Solar Sail ». Dans ASME 2003 International Solar Energy Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/isec2003-44059.
Texte intégralMaksimyak, Peter P., Oleg V. Angelsky, Elena Kurek et Andrew P. Maksimyak. « Comparison of the orbital and spin rotation of a dielectric particle ». Dans Optical Trapping and Optical Micromanipulation XV, sous la direction de Kishan Dholakia et Gabriel C. Spalding. SPIE, 2018. http://dx.doi.org/10.1117/12.2320273.
Texte intégralVuong, Luat T., Amiel A. Ishaaya, Taylor D. Grow, Alexander L. Gaeta, Eric R. Eliel et Gert t’Hooft. « Off-Axis Vortices and Polarization Rotation via Orbital Angular Momentum Exchange ». Dans Conference on Coherence and Quantum Optics. Washington, D.C. : OSA, 2007. http://dx.doi.org/10.1364/cqo.2007.jwc11.
Texte intégralZhang, Yahui, Domenico Bongiovanni, Shiqi Xia, Zhichan Hu, Daohong Song, Roberto Morandotti, Hrvoje Buljan et Zhigang Chen. « Photonic Higher-order Topological Orbital States and Nonlinearity-mediated Dynamical Rotation ». Dans CLEO : QELS_Fundamental Science. Washington, D.C. : Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleo_qels.2022.ftu4j.3.
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