Relevant bibliographies by topics / SYSTEME NON-LINEAIRES A DELAIS

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'SYSTEME NON-LINEAIRES A DELAIS'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "SYSTEME NON-LINEAIRES A DELAIS"

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WATANABE, KEIJI. "Stabilization of linear systems with non-commensurate delays." International Journal of Control 48, no. 1 (July 1988): 333–42. http://dx.doi.org/10.1080/00207178808906179.

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Shen, J., J. Cao, and J. Lu. "Consensus of fractional-order systems with non-uniform input and communication delays." Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering 226, no. 2 (August 29, 2011): 271–83. http://dx.doi.org/10.1177/0959651811412132.

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This paper studies the consensus problems of fractional-order systems with non-uniform input and communication delays over directed static networks. Based on a frequency-domain approach and generalized Nyquist stability criterion, sufficient conditions are obtained to ensure the consensus of the fractional-order systems with simultaneously non-uniform input and communication delays. When the fractional-order [Formula: see text], it is found that the consensus condition is dependent on input delays but independent on communication delays. Surprisingly, when there is no input delay, consensus can be realized whatever the communication delays are. However, a counter-example shows that communication delays will have a great influence on the consensus condition when the fractional-order [Formula: see text]. Moreover, the bounds of input and communication delays are explicitly given to guarantee the consensus of the delayed fractional-order systems with fractional-order [Formula: see text] under an undirected interaction graph.
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Wang, Rong-Nian, Ti-Jun Xiao, and Jin Liang. "Coupled non-local periodic parabolic systems with time delays." Applicable Analysis 87, no. 4 (April 2008): 479–95. http://dx.doi.org/10.1080/00036810801964198.

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TATAR, NASSER-EDDINE. "Control of systems with Holder continuous functions in the distributed delays." Carpathian Journal of Mathematics 30, no. 1 (2014): 123–28. http://dx.doi.org/10.37193/cjm.2014.01.17.

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An exponential stabilization result is proved for a doubly nonlinear distributed delays system of ordinary differential equations. The problem involves non-Lipschitz continuous distributed delays of non-Lipschitz continuous ”activation” functions. This extends similar previous works where the distributed delays as well as the activation functions were assumed to be Lipschitz continuous.
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Lafuerza, L. F., and R. Toral. "Stochastic description of delayed systems." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 371, no. 1999 (September 28, 2013): 20120458. http://dx.doi.org/10.1098/rsta.2012.0458.

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We study general stochastic birth and death processes including delay. We develop several approaches for the analytical treatment of these non-Markovian systems, valid, not only for constant delays, but also for stochastic delays with arbitrary probability distributions. The interplay between stochasticity and delay and, in particular, the effects of delay in the fluctuations and time correlations are discussed.
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Arthi, G., and K. Suganya. "Controllability of non-linear fractional-order systems with damping behaviour and multiple delays." IMA Journal of Mathematical Control and Information 38, no. 3 (May 11, 2021): 794–821. http://dx.doi.org/10.1093/imamci/dnab010.

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Abstract A controllability analysis of both linear and non-linear fractional-order systems with damping behaviour and multiple delays is studied. We derived the controllability result for damped system with multi-term fractional order and multiple delays by introducing some lemmas with the help of Laplace transform properties and Mittag–Leffler function. Further, some new sufficient conditions ensuring controllability for a class of non-linear multi-term fractional-order damped systems with multiple delays are established by utilizing fractional Caputo derivatives and Schauder’s fixed point theorem. Moreover, as applications that demonstrate the proposed results, two examples are presented.
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Gumussoy, Suat. "Relative stability analysis of closed-loop SISO dead-time systems: non-imaginary axis case." Transactions of the Institute of Measurement and Control 34, no. 4 (March 11, 2011): 411–21. http://dx.doi.org/10.1177/0142331210385854.

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We present a numerical method to analyse the relative stability of closed-loop single-input–single-output (SISO) dead-time systems on a given left complex half-plane for all positive delays. The well-known boundary crossing method for the imaginary axis is extended to a given vertical line stability boundary in the complex plane for these types of systems. The method allows us to compute the characteristic roots crossing the relative stability boundary and their corresponding delays up to a maximum predefined delay. Based on this method, we analyse the relative stability of the closed-loop system for all positive delays. Both numerical methods are effective for high-order SISO dead-time systems.
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Udaltsov, Vladimir S., Jean-Pierre Goedgebuer, Laurent Larger, and William T. Rhodes. "Dynamics of non-linear feedback systems with short time-delays." Optics Communications 195, no. 1-4 (August 2001): 187–96. http://dx.doi.org/10.1016/s0030-4018(01)01343-8.

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Nguyen, Cuong M., Pubudu N. Pathirana, and Hieu Trinh. "Robust state estimation for non-linear systems with unknown delays." IET Control Theory & Applications 13, no. 8 (May 21, 2019): 1147–54. http://dx.doi.org/10.1049/iet-cta.2018.6248.

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Oguchi, Toshiki, Atsushi Watanabe, and Takayoshi Nakamizo. "Finite spectrum assignment for nonlinear systems with non-commensurate delays." IFAC Proceedings Volumes 32, no. 2 (July 1999): 1101–6. http://dx.doi.org/10.1016/s1474-6670(17)56186-8.

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Dissertations / Theses on the topic "SYSTEME NON-LINEAIRES A DELAIS"

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Rontani, Damien. "Nonlinear dynamics of photonic components. Chaos cryptography and multiplexing." Phd thesis, Supélec, 2011. http://tel.archives-ouvertes.fr/tel-00783267.

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With the rapid development of optical communications and the increasing amount of data exchanged, it has become utterly important to provide effective architectures to protect sensitive data. The use of chaotic optoelectronic devices has already demonstrated great potential in terms of additional computational security at the physical layer of the optical network. However, the determination of the security level and the lack of a multi-user framework are two hurdles which have prevented their deployment on a large scale. In this thesis, we propose to address these two issues. First, we investigate the security of a widely used chaotic generator, the external cavity semiconductor laser (ECSL). This is a time-delay system known for providing complex and high-dimensional chaos, but with a low level of security regarding the identification of its most critical parameter, the time delay. We perform a detailed analysis of the influence of the ECSL parameters to devise how higher levels of security can be achieved and provide a physical interpretation of their origin. Second, we devise new architectures to multiplex optical chaotic signals and realize multi-user communications at high bit rates. We propose two different approaches exploiting known chaotic optoelectronic devices. The first one uses mutually coupled ECSL and extends typical chaos-based encryption strategies, such as chaos-shift keying (CSK) and chaos modulation (CMo). The second one uses an electro-optical oscillator (EOO) with multiple delayed feedback loops and aims first at transposing coded-division multiple access (CDMA) and then at developing novel strategies of encryption and decryption, when the time-delays of each feedback loop are time- dependent.
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Jarny, Yvon. "Identification de modeles non-lineaires de systemes thermiques." Nantes, 1987. http://www.theses.fr/1987NANT2048.

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Utilisation d'une methode de modelisation due a g. Chavent, consistant a minimiser un critere de moindres carres de sortie. Etude de 3 modeles comportant des parametres variables en fonction de l'etat du systeme ou du temps. Le probleme d'identification est formule comme un probleme d'optimatisation et resolu numeriquement par un algorithme de descente
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Moog, Claude. "Inversion, decouplage, poursuite de modele des systemes non lineaires." Nantes, 1987. http://www.theses.fr/1987NANT2030.

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Analyse des systemes non lineaires et leur commande par bouclage dynamique par approches structurelle et algebrique differentielles. Etude de l'inversion des systemes non lineaires a partir de notions algebriques et obtention de facon algorithmique de la structure a l'infini pour une classe generales de systemes non lineaires d'ou l'extension d'une liste d'invariants definie dans le cas de systemes lineaires invariants
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Duchesne, Claire. "Etude des proprietes optiques non lineaires dans les verres. Cas du systeme NA2O-TIO2-P2O5." Phd thesis, Université Sciences et Technologies - Bordeaux I, 1993. http://tel.archives-ouvertes.fr/tel-00136123.

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L' acces aux proprietes optiques non lineaires de materiaux tels que les verres mineraux ouvre de nouvelles perspectives dans le domaine du transport de l' information par fibre optique, voire dans celui de la commutation optique fonctionnant avec des temps de reponse tres brefs (domaine de la subpicoseconde). Concretement, leur potentialite peut etre estimee par une figure de merite F, expression d' un compromis qui doit etre trouve entre la necessite d' accroitre la vitesse et l' amplitude de changement d' indice de refraction et l' obligation d' attenuer la variation thermique de l' indice due a l' echauffement du materiau que provoque l' intensite du faisceau lumineux. Une analyse des criteres de choix des materiaux nous a conduit a centrer cette premiere etude sur des verres du systeme Na2O-TiO2-P2O5. Les resultats peuvent s' analyser en terme de reconnaissance des entites structurales se formant dans les verres et de performances obtenues sur le plan des non linearites optiques: l' analyse structurale des verres effectuee essentiellement par spectroscopie d' absorption des rayons X a conduit a l' identification des entites hyperpolarisables a l' origine des proprietes non lineaires, a savoir les groupements TiO5; les valeurs des indices non lineaires se situent un peu au-dessous de celles des verres contenant des ions lourds. En revanche, l' absence de tels constituants a permis d' accroitre considerablement les facteurs de merite. De ce point de vue, ces phosphates se placent sans doute en tete par rapport a tous les resultats publies a ce jour. Enfin, la pertinence des valeurs experimentales des indices lineaires et non lineaires a pu etre mise en evidence par une tentative de modelisation. Cette approche repose sur le modele de M. E. Lines qui a decrit la reponse electronique d' un cristal sous l' effet d' une perturbation electromagnetique en terme de processus interionique par une analyse de la liaison anion-cation.
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MARTI, PHILIPPE. "Sdrc : un systeme de cooperation entre solveurs pour la resolution de contraintes non-lineaires sur les reels." Nice, 1996. http://www.theses.fr/1996NICE5029.

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De tres nombreux problemes industriels peuvent se modeliser par un ensemble de contraintes definies sur les reels (e. G. , applications financieres, problemes thermiques, problemes electro-mecaniques). Toutefois, ces contraintes sont en general non lineaires et souvent meme non polynomiales. Un examen approfondi des applications montre tres frequemment qu'une combinaison judicieuse des techniques de resolution symboliques et numeriques permet de calculer une bonne approximation du probleme. Ce travail definit un systeme cooperatif de resolution de contraintes sur les reels. Dans ce modele, les solveurs sont vus comme des agents (dotes d'une capacite de resolution) et communiquant entre eux par des messages. Au depart, l'ensemble des contraintes est partitionne et adresse aux agents suivant leurs capacites. La supervision de la resolution est realisee par un agent particulier, le moniteur. Ensuite l'implantation d'un prototype utilisant un algorithme du simplexe, un algorithme de propagation d'intervalles et un algorithme des bases de groebner est decrit. Ces solveurs sont reutilises a partir d'implantation connues (prolog iii, interlog ii et maple v). Ils communiquent grace a une couche logicielle de gestion de processus et de communication (la parallel virtual machine) et utilisent un lingua franca: le langage openmath, a l'origine dedie au calcul symbolique. Enfin, quelques resultats experimentaux sont proposes et commentes
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BASSO, PIERRE. "Le reseau a production conditionnee. Creation et traitement des connaissances a partir d'un systeme connexionniste decrit par des champs non-lineaires." Paris 7, 1996. http://www.theses.fr/1996PA077169.

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L'idee developpee dans cette these concerne la conception d'un systeme connexionniste reposant sur un modele physique de champs non-lineaires emprunte a l'astrophysique (modele de zakharov). Ce systeme connexionniste, appele reseau a production conditionnee (rpc), ne fonctionne pas par application de regles d'inferences, la representation d'un objet se produit par emergence en fonction d'un environnement d'objets, c'est a dire d'un etat de choses, qui jouera le role d'un potentiel relativement a la creation de cette representation. Les representations de connaissances, ou d'objets, qui emergent dans un rpc figurent comme des etats stables d'ondes appeles des connectons; un connecton est defini par un systeme d'equations non-lineaires couplees ou le role de l'environnement est figure par une fonction designee par la lettre grecque gamma. Un tel systeme permet de decrire des objets ainsi que des situations entre personnes et objets evoluant en fonction du temps et des etats qui se creent dans le rpc. A titre d'illustration, l'evolution d'un bref scenario entre deux personnes, jean et marie, et un livre est decrite tout au long de la these. Toutefois, ce rpc est considere comme une illustration, et une application, d'une theorie formelle de la creation des connaissances que j'ai appelee logique de la production conditionnee (lpc) dont le formalisme est en cours de redaction. Au cours de la these il est fait constamment allusion aux concepts et aux principes de cette lpc qui ont g guide la conception du rpc
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Kyal, Malika El. "Les methodes paralleles asynchrones de multi-decomposition appliquees aux systemes differentiels algebriques non lineaires d'indice inferieur ou egal a 1." Besançon, 1999. http://www.theses.fr/1999BESA2049.

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Ce travail comporte une etude theorique et experimentale des methodes asynchrones de multi-decomposition relaxation d'onde. Ces methodes constituent une extension notable de la methode des approximations successives dans le cas d'une application de point fixe definie sur un espace produit. Leur formulation est assez generale pour englober la methode des approximations successives qui se parallelise naturellement, mais aussi celle de gauss-seidel qui est souvent sequentielle. Cette derniere satisfait le principe de gauss (utilisation d'une information des que disponible), ce qui n'est pas le cas de la premiere. L'objectif des methodes asynchrones est de permettre de satisfaire au mieux le dit principe de gauss dans un cadre parallele. Elles sont susceptibles de realiser une sorte de compromis entre les proprietes des algorithmes tres classiques evoques ci-dessus. Ici, l'application de point fixe consideree est naturellement associee a une decomposition en sous-problemes differentiels algebriques de taille plus petite que celle du probleme pose. Dans un cadre assez generale de problemes d'indice inferieur ou egal a 1, l'analyse du comportement de ces methodes s'appuie sur une propriete de contraction pour des normes uniformes avec poids convenables. Pour ce qui concerne plus specifiquement les problemes d'indice nul, c'est a dire les systemes d'equation differentielles ordinaires avec condition initiale, on adapte la technique des ensembles emboites pour aboutir a des resultats de convergence superlineaire. Dans ces deux situations, on a traite des problemes non lineaires sur des horizons en temps bornes. Des situations pratiques issues de problemes de la modelisation de circuits electroniques, de chimie medicale et de la mecanique celeste ont donne lieu a des experimentations sur un multiprocesseur sgi power challenge en utilisant la bibliotheque d'echange de messages mpi ainsi que des comparaisons avec les resultats donnes en utilisant des code sequentiels deja existants tels que dassl et radauv.
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Nguyen, Le Ha Vy. "Stability and stabilization of several classes of fractional systems with delays." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112387/document.

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Nous considérons deux classes de systèmes fractionnaires linéaires invariants dans le temps avec des ordres commensurables et des retards discrets. La première est composée de systèmes fractionnaires à entrées multiples et à une sortie avec des retards en entrées ou en sortie. La seconde se compose de systèmes fractionnaires de type neutre avec retards commensurables. Nous étudions la stabilisation de la première classe de systèmes à l'aide de l'approche de factorisation. Nous obtenons des factorisations copremières à gauche et à droite et les facteurs de Bézout associés: ils permettent de constituer l'ensemble des contrôleurs stabilisants. Pour la deuxième classe de systèmes, nous nous sommes intéressés au cas critique où certaines chaînes de pôles sont asymptotiques à l'axe imaginaire. Tout d'abord, nous réalisons une approximation des pôles asymptotiques afin de déterminer leur emplacement par rapport à l'axe. Le cas échéant, des conditions nécessaires et suffisantes de stabilité H-infini sont données. Cette analyse de stabilité est ensuite étendue aux systèmes à retard classiques ayant la même forme. Enfin, nous proposons une approche unifiée pour les deux classes de systèmes à retards commensurables de type neutre (standards et fractionnaires). Ensuite, la stabilisation d'une sous-classe de systèmes neutres fractionnaires est étudiée. Premièrement, l'ensemble de tous les contrôleurs stabilisants est obtenu. Deuxièmement, nous prouvons que pour une grande classe de contrôleurs fractionnaires à retards il est impossible d'éliminer dans la boucle fermée les chaînes de pôles asymptotiques à l'axe imaginaire si de telles chaînes sont présentes dans les systèmes à contrôler
We consider two classes of linear time-invariant fractional systems with commensurate orders and discrete delays. The first one consists of multi-input single-output fractional systems with output or input delays. The second one consists of single-input single-output fractional neutral systems with commensurate delays. We study the stabilization of the first class of systems using the factorization approach. We derive left and right coprime factorizations and Bézout factors, which are the elements to constitute the set of all stabilizing controllers. For the second class of systems, we are interested in the critical case where some chains of poles are asymptotic to the imaginary axis. First, we approximate asymptotic poles in order to determine their location relative to the axis. Then, when appropriate, necessary and sufficient conditions for H-infinity-stability are derived. This stability analysis is then extended to classical delay systems of the same form and finally a unified approach for both classes of neutral delay systems with commensurate delays (standard and fractional) is proposed. Next, the stabilization of a subclass of fractional neutral systems is studied. First, the set of all stabilizing controllers is derived. Second, we prove that a large class of fractional controllers with delays cannot eliminate in the closed loop chains of poles asymptotic to the imaginary axis if such chains are present in the controlled systems
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Salazar, Rosales Leandro Julian. "Analysing uncertainty and delays in aircraft heavy maintenance." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/analysing-uncertainty-and-delays-in-aircraft-heavy-maintenance(6a64acb7-6780-4dc4-acc5-1497bcf8654b).html.

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This study investigates the influence of unscheduled maintenance activities on delays and disruptions during the execution of aircraft heavy maintenance services by developing a simulation model based on Systems Dynamics (SD) and supported by an Evidential Reasoning (ER) rule model. The SD model studies the complex interrelationship between scheduled and unscheduled tasks and its impact on delays during a maintenance service execution. It was found that the uncertain nature of the unscheduled maintenance tasks hinders the planning, control and allocation of resources, increasing the chances to miss deadlines and incur in cost overruns. Utilising causal loop diagrams and SD simulation the research explored the relevance that the resource allocation management, the precise estimation of the unscheduled tasks and their prompt identification have on the maintenance check duration. The influence that delays and attitudes in the decision-making process have on project performance was also investigated. The ER rule model investigates the uncertainty present during the execution of a maintenance check by providing a belief distribution of the expected unscheduled maintenance tasks. Through a non-parametric discretisation process, it was found that the size and array of distribution intervals play a key role in the model estimation accuracy. Additionally, a sensitivity analysis allowed the examination of the significance that the weight, reliability and dependence of the different pieces of evidence have on model performance. By analysing and combining historical data, the ER rule model provides a more realistic and accurate prediction to analyse variability and ambiguity. This research extends SD capabilities by incorporating the ER rule for analysing system uncertainty. By using the belief distributions provided by the ER model, the SD model can simulate the variability of the process given certain pieces of evidence. This study contributes to the existing knowledge in aircraft maintenance management by analysing, from a different perspective, the impact of uncertain unscheduled maintenance activities on delays and disruptions through an integrated approach using SD and the ER rule. Despite the fact that this research focuses on studying a particular problem in the airline industry, the findings and conclusions obtained could be used to understand and address problems embodying similar characteristics. Therefore, it can be argued that, due to the close similarities between the heavy maintenance process and complex projects, these contributions can be extended to the Project Management field.
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Quan, Austin. "Noise, Delays, and Resonance in a Neural Network." Scholarship @ Claremont, 2011. http://scholarship.claremont.edu/hmc_theses/24.

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A stochastic-delay differential equation (SDDE) model of a small neural network with recurrent inhibition is presented and analyzed. The model exhibits unexpected transient behavior: oscillations that occur at the boundary of the basins of attraction when the system is bistable. These are known as delay-induced transitory oscillations (DITOs). This behavior is analyzed in the context of stochastic resonance, an unintuitive, though widely researched phenomenon in physical bistable systems where noise can play in constructive role in strengthening an input signal. A method for modeling the dynamics using a probabilistic three-state model is proposed, and supported with numerical evidence. The potential implications of this dynamical phenomenon to nocturnal frontal lobe epilepsy (NFLE) are also discussed.
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Books on the topic "SYSTEME NON-LINEAIRES A DELAIS"

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Burns, John. On non-convergence of adjoint semigroups for control systems with delays. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1987.

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Burns, John. On non-convergence of adjoint semigroups for control systems with delays. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1987.

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Burns, John. On non-convergence of adjoint semigroups for control systems with delays. Hampton, Va: ICASE, 1987.

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Christofides, Panagiotis D. Control of nonlinear and hybrid process systems: Designs for uncertainty, constraints and time-delays. Berlin: Springer, 2005.

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H, El-Farra Nael, ed. Control of nonlinear and hybrid process systems: Designs for uncertainty, constraints and time-delays. Berlin: Springer, 2005.

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Christofides, Panagiotis D. Control of nonlinear and hybrid process systems: Designs for uncertainty, constraints and time-delays. Berlin: Springer, 2005.

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Geffert, Paul M. M. Stochastic Non-Excitable Systems with Time Delay: Modulation of Noise Effects by Time-Delayed Feedback. Springer Spektrum, 2015.

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Muller, Sebastian, and Martin Sieber. Resonance scattering of waves in chaotic systems. Edited by Gernot Akemann, Jinho Baik, and Philippe Di Francesco. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198744191.013.34.

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This article discusses some applications of random matrix theory (RMT) to quantum or wave chaotic resonance scattering. It first provides an overview of selected topics on universal statistics of resonances and scattering observables, with emphasis on theoretical results obtained via non-perturbative methods starting from the mid-1990s. It then considers the statistical properties of scattering observables at a given fixed value of the scattering energy, taking into account the maximum entropy approach as well as quantum transport and the Selberg integral. It also examines the correlation properties of the S-matrix at different values of energy and concludes by describing other characteristics and applications of RMT to resonance scattering of waves in chaotic systems, including those relating to time delays, quantum maps and sub-unitary random matrices, and microwave cavities at finite absorption.
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Christofides, P. D., and Nael El-Farra. Control of Nonlinear and Hybrid Process Systems: Designs for Uncertainty, Constraints and Time-Delays (Lecture Notes in Control and Information Sciences) ... Notes in Control and Information Sciences). Springer, 2005.

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Balik, Martin. Perioperative cardiac care of the high-risk non-cardiac patient. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199687039.003.0076.

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Non-cardiac surgery conveys a cardiac risk related to the status of the patient’s cardiovascular system. Cardiac-related risk of surgery can be assessed by integrating the risk and urgency of the procedure with cardiovascular risk factors, which include age, ischaemic heart disease, heart failure, stroke, diabetes mellitus, chronic obstructive pulmonary disease, and renal dysfunction. An individual assessment can include simple multivariate scoring systems, developed with the aim of evaluating cardiac risk prior to non-cardiac surgery. Patient assessment can be extended for indicated additional tests. The indications for further cardiac testing and treatments are the same as in the non-operative setting, but their timing is dependent on the urgency of surgery, and patient-specific and surgical risk factors. A delay in surgery, due to the use of both non-invasive and invasive preoperative testing, should be limited to those circumstances in which the results of such tests will clearly affect patient management. In high-risk patients, the result of the cardiac assessment helps to choose adequate perioperative monitoring and to indicate for an intensive care unit stay perioperatively. Chronic medications can be adjusted, according to the current knowledge on perioperative management. Drugs with the potential to reduce the incidence of post-operative cardiac events and mortality include beta-blockers, statins, and aspirin. Chronic platelet anti-aggregation and anticoagulation therapies have to be adapted by weighing the risk of bleeding against the risk of thrombotic complications.
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Book chapters on the topic "SYSTEME NON-LINEAIRES A DELAIS"

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Geffert, Paul M. "Coupled stochastic systems." In Stochastic Non-Excitable Systems with Time Delay, 49–59. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-09295-5_4.

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Balibrea, Francisco. "A Logistic Non-linear Difference Equation with Two Delays." In Understanding Complex Systems, 269–93. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-66766-9_9.

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Geffert, Paul M. "Stochastic effects in nonlinear systems." In Stochastic Non-Excitable Systems with Time Delay, 3–23. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-09295-5_2.

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Geffert, Paul M. "Time-delayed feedback in nonlinear stochastic systems." In Stochastic Non-Excitable Systems with Time Delay, 25–47. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-09295-5_3.

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Hasegawa, Masaki, Subhash Bhalla, and Laurence Tianruo Yang. "Elimination of Non-deterministic Delays in a Real-Time Database System." In Embedded Software and Systems, 172–85. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11599555_19.

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Geffert, Paul M. "Introduction." In Stochastic Non-Excitable Systems with Time Delay, 1–2. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-09295-5_1.

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Geffert, Paul M. "Conclusion." In Stochastic Non-Excitable Systems with Time Delay, 61–62. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-09295-5_5.

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Geffert, Paul M. "Outlook." In Stochastic Non-Excitable Systems with Time Delay, 63. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-09295-5_6.

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Raynaud, Henri-François, Fabienne Floret, and Caroline Kulcsár. "Delay-Based Non-linear Observers for Congestion Control in Communication Networks." In Applications of Time Delay Systems, 3–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-49556-7_1.

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Seuret, Alexandre, Thierry Floquet, Jean-Pierre Richard, and Sarah Spurgeon. "Observer Design for Systems with Non Small and Unknown Time-Varying Delay." In Topics in Time Delay Systems, 233–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02897-7_20.

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Conference papers on the topic "SYSTEME NON-LINEAIRES A DELAIS"

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Sipahi, Rifat, and Artug Acar. "Stability Analysis of Three-Agent Consensus Dynamics With Fixed Topology and Three Non-Identical Delays." In ASME 2008 Dynamic Systems and Control Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/dscc2008-2404.

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In this paper, we consider a strongly connected three-agent consensus dynamics with three non-identical communication delays, where each delay arises between a pair of agents. Asymptotic stability of consensus mission is of question in presence of delays, and to study this we propose a new and computationally efficient technique that detects stability transitions with respect to delays. This new technique originates from frequency sweeping ideas and ultimately leads to stability robustness maps of the system with respect to three delays. Proofs related to the analysis are sketched. A case study is provided to demonstrate the effectiveness of the approach and the trade-off between controller gains versus delays.
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Cavdaroglu, Mursel Emre, and Nejat Olgac. "Full State Feedback Control Design for “Delay Scheduling”." In ASME 2008 Dynamic Systems and Control Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/dscc2008-2127.

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A fixed full state feedback controller design approach is proposed for linear time invariant (LTI) systems with time delays. This approach enables the designer to use recently introduced “delay scheduling” procedure, which opens a new direction in control synthesis. “Delay scheduling” strategy suggests prolonging the existing (and unavoidable) delays in order to recover stability or to improve the control performance features. To be able to do this, however, system should have multiple stable operating zones in the domain of the delays. The main contribution of this paper is to develop a procedure for designing such a control law. It starts with a simple usage of LQR for non-delayed systems. This approach, nevertheless, imparts some complexities when delays are introduced. We handle them using a recent paradigm, called the Cluster Treatment of Characteristic Roots (CTCR). For an example to the ensuing design strategy, we use a fully actuated cart-pendulum system. Relevant simulations are carried out to show the viability of the proposed idea.
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Gao, Qingbin, Umut Zalluhoglu, and Nejat Olgac. "Equivalency of Stability Transitions Between the SDS (Spectral Delay Space) and DS (Delay Space)." In ASME 2013 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/dscc2013-3703.

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It has been shown that the stability of LTI time-delayed systems with respect to the delays can be analyzed in two equivalent domains: (i) delay space (DS) and (ii) spectral delay space (SDS). Considering a broad class of linear time-invariant time delay systems with multiple delays, the equivalency of the stability transitions along the transition boundaries is studied in both spaces. For this we follow two corresponding radial lines in DS and SDS, and prove for the first time in literature that they are equivalent. This property enables us to extract local stability transition features within the SDS without going back to the DS. The main advantage of remaining in SDS is that, one can avoid a non-linear transition from kernel hypercurves to offspring hypercurves in DS. Instead the potential stability switching curves in SDS are generated simply by stacking a finite dimensional cube called the building block (BB) along the axes. A case study is presented within the report to visualize this property.
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Ansarpanahi, Shadi, and Samsul Bahari Mohd Noor. "Analysis the Effect of Undesirable Factors on Stability of Model Predictive Controller." In ASME 2008 Dynamic Systems and Control Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/dscc2008-2123.

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MPC also known as moving or receding horizon control, is a feedback control scheme that has originated in industry as a real-time computer control algorithm to solve linear and nonlinear multi-variable problems that have constraints and time delays. Since disturbances can drive model predictive control into non-convexity and instability this problem has attracted many researchers. The stability studies in this paper are illustrated in presence of colored noise, error in delay estimation, unstable and non-minimum phase system by means of numerical example. The simulation is carried out using an example, which is the main contribution of the paper.
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Niu, Jinbo, Ye Ding, Limin Zhu, and Han Ding. "A Generalized Runge-Kutta Method for Stability Prediction of Milling Operations With Variable Pitch Tools." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39721.

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This paper extends the generalized Runge-Kutta method (GRKM) to predict the machining stability of milling systems with variable-pitch tools. Different from the uniform cutters with fixed pitch angles, the variation of tooth distribution angles of variable pitch cutters significantly affects the stability diagrams of the milling systems. From the viewpoint of the regenerative chatter, the milling system with non-uniform tools is governed by a delayed differential equation (DDE) with multiple delays. Afterwards, the GRKM, an approach verified with high computational accuracy and efficiency for DDEs with a single delay, is extended to tackle the milling systems with multiple delays based on Floquet theory. Besides the pitch angles, other geometry parameters of the cutter are also taken into consideration, such as the helix angle, which is proved with limited influence on the stability lobes. With the objective of maximizing productivity, the resultant stability charts provide valuable reference for the geometry design of variable-pitch cutters and for the choice of machining parameters, i.e. the spindle speed and the depth of cut.
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Elbeyli, Ozer, and J. Q. Sun. "Efficiency and Accuracy of Semi-Discretization Schemes for Time Delayed Feedback Control Systems." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42759.

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Semi-discretization is an effective method for analysis and control design of time-invariant as well as periodic linear systems with time delay. This paper briefly describes various approximation schemes in conjunction to the semi-discretization method. Comparison measures making use of the stability bounds of control gains and the controlled response of the system are presented. The accuracy and efficiency of the method with the zeroth order, improved zeroth order and first order approximations are compared through numerical simulations. Another first order approximation of the system with multiple time delays under a non-delayed feedback leads to integro-differential equations where a simple approximation is utilized to generate discrete maps. It is found that the first order approximation provides substantial improvements in accuracy and efficiency for feedback control design of LTI and periodic systems.
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Angstadt, R., J. Estrada, H. T. Diehl, B. Flaugher, and M. Johnson. "Microsecond Delays on Non-Real Time Operating Systems." In 2007 15th IEEE-NPSS Real-Time Conference. IEEE, 2007. http://dx.doi.org/10.1109/rtc.2007.4382803.

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Omori, Yu, and Keiji Kimura. "Performance Evaluation on NVMM Emulator Employing Fine-Grain Delay Injection." In 2019 IEEE Non-Volatile Memory Systems and Applications Symposium (NVMSA). IEEE, 2019. http://dx.doi.org/10.1109/nvmsa.2019.8863522.

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Wagner-Nachshoni, Clarice, and Yoram Halevi. "Control of Two-Link Flexible Structures." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58118.

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A method of noncollocated controller design for non-uniform flexible structures, governed by the wave equation, is proposed. An exact, infinite dimensional, transfer function, relating the actuation and measurement points, with general boundary conditions, is derived for the multi-link case. Three modeling methods are presented and discussed. A key element of the model is the existence of time delays, due to the wave motion, which play a major role in the controller design. The design consists of two stages. First an inner rate loop is closed in order to improve the system dynamic behavior. It leads to a finite dimensional plus delay inner closed loop, which is the equivalent plant for the outer loop. In the second stage an outer noncollocated position loop is closed. It has the structure of an observer–predictor control scheme to compensate for the response delay. The resulting overall transfer function is second order, with arbitrarily assigned dynamics, plus delay.
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Wang, Rong-Jyue. "Delay-dependent fuzzy controller design for stabilization of nonlinear systems with multiple non-commensurate time delays." In 2009 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE). IEEE, 2009. http://dx.doi.org/10.1109/fuzzy.2009.5277252.

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