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Relevant bibliographies by topics / Commutateur virtuel

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Academic literature on the topic 'Commutateur virtuel'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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Journal articles on the topic "Commutateur virtuel"

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Bardakov, Valeriy G., Krishnendu Gongopadhyay, and Mikhail V. Neshchadim. "Commutator subgroups of virtual and welded braid groups." International Journal of Algebra and Computation 29, no. 03 (2019): 507–33. http://dx.doi.org/10.1142/s0218196719500127.

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Let [Formula: see text], respectively [Formula: see text] denote the virtual, respectively welded, braid group on [Formula: see text]-strands. We study their commutator subgroups [Formula: see text] and, [Formula: see text], respectively. We obtain a set of generators and defining relations for these commutator subgroups. In particular, we prove that [Formula: see text] is finitely generated if and only if [Formula: see text], and [Formula: see text] is finitely generated for [Formula: see text]. Also, we prove that [Formula: see text] and for [Formula: see text] the commutator subgroups [Form

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2

Kachin, Oleg S., Alexander S. Karakulov, and Alexander B. Serov. "An Analysis of the Main Factors on the Wear of Brushes for Brush-Type Motors and the Ways of Increasing their Lifetime." Applied Mechanics and Materials 792 (September 2015): 107–12. http://dx.doi.org/10.4028/www.scientific.net/amm.792.107.

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The mathematical description of the wear processes of brushes of brush-type motors is described. The actions directed on increase of the lifetime of brushes are offered. The proposed mathematical model of the wear processes of brushes considers the highest number of parameters of a sliding contact, including sparking energy of windings switching and the mechanical condition of a commutator and bearings. The approach for evaluating the optimum pressure on the brush in order to increase its resource is offered. The real and the virtual lifetime tests of the universal motor considering changing o

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Liu, Hewei, and Guobin Jin. "The Strategy of Continuous Commutation Failure Suppression by Combining Turn-off Angle Compensation and Dynamic Nonlinear VDCOL." Sustainability 16, no. 5 (2024): 2145. http://dx.doi.org/10.3390/su16052145.

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In recent years, with the continuous growth in China’s economy, the continuous advancement of urbanization and industrialization, the contradiction between rapid economic development and the continuous reduction in traditional fossil energy reserves such as coal, oil, and natural gas, the continuous aggravation of environmental pollution has become increasingly prominent. In this era, clean energy power generation technologies such as hydropower, wind power, and solar power generation, which have the advantages of renewability, environmental protection, and economy, have developed rapidly. How

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AMIT, ALON, and UZI VISHNE. "CHARACTERS AND SOLUTIONS TO EQUATIONS IN FINITE GROUPS." Journal of Algebra and Its Applications 10, no. 04 (2011): 675–86. http://dx.doi.org/10.1142/s0219498811004690.

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The number of ways an element of a finite group can be expressed as a square, a commutator, or more generally in the form w(x1, …, xr), where w is a word in the free group, defines a natural class function. We investigate some properties of these class functions, in particular their tendency to be characters or virtual characters of the underlying group. Generalizing classical results of Frobenius and others, we prove that generalized commutators yield characters in this manner, and use this to exhibit a criterion for nilpotency based on a certain equation associated with the irreducible chara

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Hu, Yang, Heng Zhang, Jing Chen, et al. "A Multi-Functional De-Icing Equipment Using Hybrid Type Parallel Current Source Converters." E3S Web of Conferences 256 (2021): 02016. http://dx.doi.org/10.1051/e3sconf/202125602016.

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This paper has proposed a phase controlled and PWM controlled power current source converter (CSC) for transmission line de-icing. The proposed system consists of a high-power thyristor-based line commutated converter to contribute a majority of the dc de-icing current and a low power PWM CSC to provide a part of the dc de-icing current and to compensate the low order harmonic ac current from the TCR. Thus, the grid current can be highly sinusoidal. In order to avoid the resonance caused by the interaction between TCR and PWM CSC, a virtual impedance control is implemented in the PWM CSC witho

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Shchemelinin, Dmitry. "Software models and monitoring methods of the state of processing nodes in the cloud infocommunication system using Zabbix." Программные системы и вычислительные методы, no. 2 (February 2021): 26–35. http://dx.doi.org/10.7256/2454-0714.2021.2.35617.

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The subject of this research is the new methods for improving the efficiency of Zabbix monitoring systems for the computational infrastructure of the universal infocommunication commutator, built upon the principle of globally distributed computational complex using the information cloud technologies.&nbsp;The object of this research is the globally distributed computational system of RingCentral corporation (USA), which is based on the technology of hybrid information cloud deployed in over a hundred &nbsp;data storage and processing centers in all large economic and geographical zone

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Mrs., Babita, and Jitendra Singh Bhadoriya Mr. "A NOVEL APPROACH TO IMPROVE THE CHARACTERISTIC OF A SENSORLESS BLDC MOTOR USING CONTROL STRATEGY." International Journal of Advances in Engineering & Scientific Research, Vol.4,, Issue 2, Feb-Apr-2017, (2017): pp 31–48. https://doi.org/10.5281/zenodo.570108.

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This Research work represent an improved direct back EMF detection method .It is desirable in any kind of machine to use a method which is less dependable on the sensors and complex circuits, so in this paper a sensor less method is used to commutate and trigger the inverter connected to BLDC motor. A low pass filter arrangement with comparator is used for detection of back EMF with hall effect sensors. Hall effect signals gives the information of the operations in the BLDC motor in this work hall effect signals are used for the gate pulses for the inverter. In this research work rotor positio

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Mrs., Babita1, and Jitendra Singh Bhadoriya2 Mr. "A NOVEL APPROACH TO IMPROVE THE CHARACTERISTIC OF A SENSORLESS BLDC MOTOR USING CONTROL STRATEGY." International Journal of Advances in Engineering & Scientific Research 4, no. 2 (2017): 31–48. https://doi.org/10.5281/zenodo.10774888.

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<strong>Abstract</strong><strong>: </strong>                                This Research work represent an improved direct back EMF detection method .It is desirable in any kind of machine to use a method which is less dependable on the sensors and complex circuits, so in this paper a sensor less method is used to commutate and trigger the inverter connected to BLDC motor. A low pass filter arrangement with comparator is used for detection of back EM

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9

Song, Ruzhi, and Fengling Li. "Intersecting subgroups and Symmetric Commutator subgroups in Virtual link groups." Journal of Knot Theory and Its Ramifications, April 4, 2025. https://doi.org/10.1142/s0218216525500294.

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Kumar, Pravin, Tushar Kanta Naik, Neha Nanda, and Mahender Singh. "Commutator subgroups and crystallographic quotients of virtual extensions of symmetric groups." Journal of Pure and Applied Algebra, May 2024, 107713. http://dx.doi.org/10.1016/j.jpaa.2024.107713.

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Dissertations / Theses on the topic "Commutateur virtuel"

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Tayachi, Zeineb. "Sûreté de fonctionnement et provisionnement éco-énergétique dans les centres de données virtualisés IaaS." Electronic Thesis or Diss., Paris, CNAM, 2021. http://www.theses.fr/2021CNAM1292.

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Le Cloud computing offre aux utilisateurs l’opportunité d’exploiter des services qui peuvent être des infrastructures, des plateformes, des applications,... Ceci représente un gain de temps et d’argent considérable puisque l’utilisateur n’a besoin ni d’investir dans une infrastructure onéreuse, ni de gérer sa maintenance, de plus il paye juste les ressources utilisées. Afin de prendre en charge des applications à grande échelle et stocker de gros volumes de données, les centres de données ont été largement déployés par des fournisseurs cloud. Cependant, les études ont montré une mauvaise utili

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Matmat, Mohamed. "Pour une approche complète de l'évaluation de fiabilité dans les microsystèmes." Phd thesis, INSA de Toulouse, 2010. http://tel.archives-ouvertes.fr/tel-00538717.

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La complexité des microsystèmes, leur multidisciplinarité, l'hétérogénéité des matériaux utilisés et les interfaces avec l'environnement extérieur rendent difficiles l'évaluation et la maîtrise de leur fiabilité indispensables pour l'exploitation des nombreuses possibilités innovantes qu'ils offrent. L'approche que nous avons proposée dans ce travail, afin de prédire la fiabilité des microsystèmes, se fonde sur l'usage intensif de la modélisation et de la simulation, dans les conditions d'usage du microsystème (profil de mission), en associant donc l'évaluation de la fiabilité à la démarche de

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Pham, Thanh Son. "Autonomous management of quality of service in virtual networks." Thesis, Compiègne, 2014. http://www.theses.fr/2014COMP2147/document.

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Cette thèse propose un schéma entièrement distribué de routage résilient pour les réseaux de switches. Dans cette approche une panne est traitée localement ; ainsi les autres nœuds du réseau n’ont pas besoin de prendre des mesures spécifiques. Contrairement aux systèmes classiques de routage IP qui se base uniquement sur la destination, le routage est fait en se basant sur l’arc de l’entrée et la destination. La contrainte qui en résulte est que les deux flux à la même destination entrant dans un nœud par un arc commun doivent fusionner après cet arc. Nous montrons que sous des faibles hypothè

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