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Relevant bibliographies by topics / Linear parameter varying / Dissertations / Theses

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Dissertations / Theses on the topic 'Linear parameter varying'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Carter, Lance Huntington. "Linear parameter varying representations for nonlinear control design /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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2

BruyeÌ€re, Lilian Henri AndreÌ. "Robust parametric autopilot for quasi-linear parameter-varying missile." Thesis, Cranfield University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413400.

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3

Fitzpatrick, Kristin Lee. "Applications of linear parameter-varying control for aerospace systems." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001820.

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4

Wang, Feng. "Robust control of quasi-linear parameter-varying L2 point formation flying with uncertain parameters." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/6933.

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Robust high precision control of spacecraft formation flying is one of the most important techniques required for high-resolution interferometry missions in the complex deep-space environment. The thesis is focussed on the design of an invariant stringent performance controller for the Sun-Earth L2 point formation flying system over a wide range of conditions while maintaining system robust stability in the presence of parametric uncertainties. A Quasi-Linear Parameter-Varying (QLPV) model, generated without approximation from the exact nonlinear model, is developed in this study. With this QL

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5

Xiong, Dapeng. "Stability analysis and controller synthesis of linear parameter varying systems /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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6

Boonto, Sudchai [Verfasser]. "Identification of Linear Parameter-Varying Input-Output Models / Sudchai Boonto." München : Verlag Dr. Hut, 2011. http://d-nb.info/1013526511/34.

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7

Zandi, Nia Arman. "Switching linear parameter-varying electronic throttle control for automotive engines." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55165.

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The full abstract for this thesis is available in the body of the thesis, and will be available when the embargo expires.<br>Applied Science, Faculty of<br>Mechanical Engineering, Department of<br>Graduate

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8

Chen, Jianchi. "Robust linear parameter varying control of an unmanned aerial vehicle." Thesis, University of Leicester, 2010. http://hdl.handle.net/2381/7930.

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The dynamic response characteristics of modern unmanned aerial vehicles (UAVs) are highly nonlinear and vary substantially with flight conditions due to their reduced dimensions compared to normal aircraft. In this thesis, design frameworks that are based on parameter dependent Lyapunov functions (PDLFs) are developed for UAV flight control systems. These design frameworks or procedures can systematically deal with aircraft systems with nonlinear and parameter dependent dynamics, and uncertainty in the mathematical models. To this end, we analyse robust stability and performance of LPV systems

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9

Mejari, Manas Dilip. "Towards automated data-driven modeling of linear parameter-varying systems." Thesis, IMT Alti Studi Lucca, 2018. http://e-theses.imtlucca.it/251/1/Mejari_phdthesis.pdf.

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The Linear Parameter-Varying (LPV) paradigm represents a natural extension of the classical Linear Time-Invariant (LTI) framework. By virtue of the so-called scheduling signal, LPV models can accurately describe the behavior of a large class of timevarying and nonlinear dynamical systems, while preserving the linearity between input and output signals. Thus, LPV models are of great practical significance for modeling and control of many industrial systems, as the simplicity of the LTI theory is retained. This thesis is concerned with datadriven modeling of LPV systems, addressing some

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10

Bui-Tuan, Viet Long. "Stability and stabilization of linear parameter-varying and time-varying delay systems with actuators saturation." Electronic Thesis or Diss., Amiens, 2022. http://www.theses.fr/2022AMIE0082.

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La thèse est consacrée au développement d'une méthodologie de stabilité et de stabilisation pour les systèmes linéaires paramètres-dépendants et à retard soumis à la saturation de la commande. Dans le processus industriel, l'amplitude du signal de commande est généralement limitée par les contraintes de sécurité, les limites du cycle physique, etc. Pour cette raison, un outil de synthèse et d'analyse approprié est nécessaire pour décrire avec précision les caractéristiques des systèmes saturés à paramètres linéaires variables. Dans la première partie, une forme dépendante des paramètres de la

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11

Bu, Yiming. "Switching linear parameter-varying control of a variable-speed wind turbine." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1596455.

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<p> For variable-speed wind energy conversion systems, control objectives may be different in partial and full load regions (or in low and high wind speed regions). Typical control objectives are to maximize the energy capture in low wind speeds, and to maintain the generated power and the rotational turbine speed within safety limits during high wind speeds. In such a case, it is difficult to design a single robust controller covering both partial load and full load conditions. This paper presents a systematic switching control method for a variable-speed variable-pitch wind turbine over a

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12

Herzog, Christian [Verfasser]. "Linear Parameter-Varying Control of Systems of High Complexity / Christian Hoffmann." München : Verlag Dr. Hut, 2016. http://d-nb.info/1106592980/34.

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13

Melo, Félix Eduardo Mapurunga de. "Modeling and linear parameter-varying identification of a two-tank system." reponame:Repositório Institucional da UFC, 2017. http://www.repositorio.ufc.br/handle/riufc/25566.

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MELO, F. E. M. Modeling and linear parameter-varying identification of a two-tank system. 2017. 82 f. Dissertação (Mestrado em Engenharia Elétrica)–Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2017.<br>Submitted by Marlene Sousa (mmarlene@ufc.br) on 2017-09-06T17:29:24Z No. of bitstreams: 1 2017_dis_femmelo.pdf: 6250467 bytes, checksum: 7ec83fc628244552eb74ae6b40c6fbc0 (MD5)<br>Approved for entry into archive by Marlene Sousa (mmarlene@ufc.br) on 2017-09-06T17:30:18Z (GMT) No. of bitstreams: 1 2017_dis_femmelo.pdf: 6250467 bytes, checksum: 7ec83fc628244552eb74ae6b40c6fbc0 (M

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14

Kaiser, Gerd [Verfasser]. "Torque Vectoring - Linear Parameter-Varying Control for an Electric Vehicle / Gerd Kaiser." München : Verlag Dr. Hut, 2015. http://d-nb.info/1070124168/34.

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15

Genç, Ali Umut. "Linear parameter-varying modelling and robust control of variable cam timing engines." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619775.

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16

Masih, Hanifzadegan. "Linear parameter-varying control of CNC machine tool feed-drives with dynamic variations." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/51892.

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This thesis presents new approaches to feed-drive control of computer numerical control (CNC) machine tools machine tools with a significant range of dynamic variations during machining operations. Several sources which can cause dynamic variations of feed-drive systems are considered, such as the change of table position, the reduction of workpiece mass, and the variations of tool-path orientation. Feed-drive systems having the dynamic variations are modeled as linear parameter varying (LPV) models. For the LPV models, three control methods are proposed to achieve satisfactory control perfo

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17

Patterson, Byron Wain. "A linear parameter varying control methodology for reduction of helicopter higher harmonic vibration." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/105564.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 155-159).<br>Vibration in helicopters can have a significant impact on their utility, maintenance, weight, performance, and cost of operation. This thesis focuses on the design of a vibration reduction controller that is effective throughout

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18

Xue, Xiangming. "Development of a nonlinear wind turbine simulator for linear parameter-varying control design." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1603750.

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<p> It is challenging to design a controller for a wind turbine system because of its nonlinear time-varying dynamics. To resolve this issue, linear parameter-varying (LPV) control theory has been applied in the past 10years to deal with nonlinear and wind-speed-dependent dynamics. Before applying the LPV control method, it is required to transform the nonlinear model of the system to an LPV model. The main objectives of this research are to model a 5-megawatt (MW) Reference Wind Turbine for Offshore System as an LPV system, develop a nonlinear wind turbine simulator using MATLAB/Simulink to v

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19

Zebiri, Hossni. "Hinf-Linear Parameter Varying Controllers Order Reduction : Application to semi-active suspension control." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH7733/document.

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L'amélioration permanente de la qualité et des performances des systèmes automatiques constitue un défi majeur dans la théorie du contrôle. La théorieHinf a permis d'améliorer considérablement les performances des correcteurs. Ces derniers reposent sur des modèles mathématiques qui sont potentiellement d'ordre élevé (c.-à-d. comprenant un nombre élevé d'équations différentielles). De plus, l'ajout de poids de pondérations spécifiant les performances à respecter accroit encore plus leur ordre. La complexité algorithmique résultante peut alors rendre leur implantation difficile voire même imposs

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20

Larsson, Per. "Linear parameter varying model and identification method for Li-ion batteries in electric vehicles." Thesis, Uppsala universitet, Avdelningen för systemteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-444687.

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The market for electric vehicles (EV) is growing rapidly. The rise of EVs is most prominent for passenger vehicles, but trucks and busses are also quickly becoming electrified. Scania aims to be the leader of this transition. A central part of the EV is the Lithium-ion battery. In order to use the battery in the most efficient manner a Battery Management System (BMS) is needed. A key part of the BMS is a model that describes the battery as a system where the input is the current and the output is the terminal voltage. The dynamics of the battery is affected by external factors, called scheduli

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21

Javadian, Moein. "A numerical optimization approach to switching surface design for switching linear parameter-varying control." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/46064.

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This thesis proposes an algorithm to design switching surfaces for the switching linear parameter-varying (LPV) controller with hysteresis switching. The switching surfaces are sought for to optimize the bound of the closed-loop L2-gain performance. An optimization problem is formulated with respect to parameters characterizing Lyapunov matrix variables, local controller matrix variables, and locations of the switching surfaces. Since the problem turns out to be non-convex in terms of these characterizing parameters, a numerical algorithm is given to guarantee the decrease of the cos

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22

Theis, Julian [Verfasser], and Herbert [Akademischer Betreuer] Werner. "Robust and linear parameter-varying control of aeroservoelastic systems / Julian Theis ; Betreuer: Herbert Werner." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2018. http://d-nb.info/1159954968/34.

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23

Herzog, Christian [Verfasser], and Herbert [Akademischer Betreuer] Werner. "Linear parameter-varying control of systems of high complexity / Christian Hoffmann. Betreuer: Herbert Werner." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2016. http://d-nb.info/1103023365/34.

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24

Guthrie, Kyle Thomas. "Linear Parameter Varying Path Following Control of a Small Fixed Wing Unmanned Aerial Vehicle." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23740.

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A mathematical model of a small fixed-wing aircraft was developed through application of parameter estimation techniques to simulated flight test data. Multiple controllers were devised based on this model for path following, including a self-scheduled linear parameter-varying (LPV) controller with path curvature as a scheduling parameter. The robustness and performance of these controllers were tested in a rigorous MATLAB simulation environment that included steady winds and gusts, measurement noise, delays, and model uncertainties. The linear controllers designed within were found to be robu

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25

Zhang, Xiping. "Parameter-Dependent Lyapunov Functions and Stability Analysis of Linear Parameter-Dependent Dynamical Systems." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/5270.

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The purpose of this thesis is to develop new stability conditions for several linear dynamic systems, including linear parameter-varying (LPV), time-delay systems (LPVTD), slow LPV systems, and parameter-dependent linear time invariant (LTI) systems. These stability conditions are less conservative and/or computationally easier to apply than existing ones. This dissertation is composed of four parts. In the first part of this thesis, the complete stability domain for LTI parameter-dependent (LTIPD) systems is synthesized by extending existing results in the literature. This domain is calculat

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26

Kaiser, Gerd [Verfasser], and Herbert [Akademischer Betreuer] Werner. "Torque Vectoring - Linear Parameter-Varying Control for an Electric Vehicle / Gerd Kaiser. Betreuer: Herbert Werner." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2015. http://d-nb.info/1071620835/34.

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27

Abou, Jaoude Dany. "Computationally Driven Algorithms for Distributed Control of Complex Systems." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/85965.

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This dissertation studies the model reduction and distributed control problems for interconnected systems, i.e., systems that consist of multiple interacting agents/subsystems. The study of the analysis and synthesis problems for interconnected systems is motivated by the multiple applications that can benefit from the design and implementation of distributed controllers. These applications include automated highway systems and formation flight of unmanned aircraft systems. The systems of interest are modeled using arbitrary directed graphs, where the subsystems correspond to the nodes, and

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28

Hu, Yiran. "Identification and State Estimation for Linear Parameter Varying Systems with Application to Battery Management System Design." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281368350.

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29

Essegbey, John W. "Piece-wise Linear Approximation for Improved Detection in Structural Health Monitoring." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1342729241.

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30

Petersson, Daniel. "A Nonlinear Optimization Approach to H2-Optimal Modeling and Control." Doctoral thesis, Linköpings universitet, Reglerteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-93324.

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Mathematical models of physical systems are pervasive in engineering. These models can be used to analyze properties of the system, to simulate the system, or synthesize controllers. However, many of these models are too complex or too large for standard analysis and synthesis methods to be applicable. Hence, there is a need to reduce the complexity of models. In this thesis, techniques for reducing complexity of large linear time-invariant (lti) state-space models and linear parameter-varying (lpv) models are presented. Additionally, a method for synthesizing controllers is also presented. Th

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31

Bribiesca, Argomedo Federico. "Contrôle et stabilité Entrée-Etat en dimension infinie du profil du facteur de sécurité dans un plasma Tokamak." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENT023/document.

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Dans cette thèse, on s'intéresse au contrôle du profil de facteur de sécurité dans un plasma tokamak. Cette variable physique est liée à plusieurs phénomènes dans le plasma, en particulier des instabilités magnétohydrodynamiques (MHD). Un profil de facteur de sécurité adéquat est particulièrement important pour avoir des modes d'opération avancés dans le tokamak, avec haut confinement et stabilité MHD. Pour cela faire, on se focalise sur la commande du gradient du profil de flux magnétique poloidal dans le tokamak. L'évolution de cette variable est donnée par une équation de diffusion avec des

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32

Yang, Shu. "Modeling and Control of Tensegrity-Membrane Systems." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/71686.

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Tensegrity-membrane systems are a class of new bar-tendon-membrane systems. Such novel systems can be treated as extensions of tensegrity structures and are generally lightweight and deployable. These two major advantages enable tensegrity-membrane systems to become one of the most promising candidates for lightweight space structures and gossamer spacecraft. In this dissertation, modeling and control of tensegrity-membrane systems is studied. A systematic method is developed to determine the equilibrium conditions of general tensegrity-membrane systems. Equilibrium conditions can be simpl

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33

Vilela, Paulo Roberto Chiarolanza. "Modelagem, simulação e otimização dinâmica aplicada a um processo de fermentação alcoólica em batelada alimentada." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-21122015-102442/.

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O uso de etanol combustível no Brasil é hoje considerado o mais importante programa de combustível comercial renovável do mundo, sendo um potencial substituto aos derivados de petróleo. O aumento de rendimento fermentativo e a diminuição das perdas são objetivos de estudo em diversos centros de pesquisa, sendo o estudo da modelagem matemática e simulação do processo de grande importância para tal. A presente pesquisa apresenta como função identificar um modelo matemático para a linhagem isolada de Saccharomyces cerevisiae PE-2, de maneira a otimizar a maneira como é realizada a sua alimentação

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34

Al-Durra, Ahmed Abad. "MODEL-BASED ESTIMATION FOR IN-CYLINDER PRESSURE OF ADVANCED COMBUSTION ENGINES." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281715345.

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35

González, Germán Iván Temoatzin. "Contributions to analysis and control of Takagi-Sugeno systems via piecewise, parameter-dependent, and integral Lyapunov functions." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/101282.

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Esta tesis considera un enfoque basado en Lyapunov para el análisis y control de sistemas no lineales cuyas ecuaciones dinámicas son reescritas como un modelo Takagi-Sugeno o uno polinomial convexo. Estas estructuras permiten resolver problemas de control mediante técnicas de optimización convexa, más concretamente desigualdades matriciales lineales y suma de cuadrados, que son eficientes herramientas desde un punto de vista computacional. Después de proporcionar una visión general básica del estado actual en el campo de los modelos Takagi-Sugeno, esta tesis aborda cuestiones sobre las funcion

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36

Liacu, Raluca. "Identification de systèmes linéaires à paramètres variant : différentes approches et mises en oeuvre." Thesis, Supélec, 2014. http://www.theses.fr/2014SUPL0018/document.

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L’identification de systèmes est un sujet très utilisé à la fois dans le monde académique et industriel. Des nombreuses méthodes d’identification de systèmes invariants dans le temps existent dans la littérature et beaucoup d’algorithmes sont utilisés dans la modélisation pratique des systèmes. Ces outils offrent des résultats satisfaisants, mais ils ne sont pas capables de reproduire le caractère non linéaire présent dans les comportements des systèmes physiques. Ce besoin a conduit à l’apparition de la classe des systèmes linéaires à paramètres variants (LPV), capable de modéliser les aspect

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37

Ameho, Yann. "Du pilotage d'une famille de drones à celui d'un drone hybride via la commande adaptative." Thesis, Toulouse, ISAE, 2013. http://www.theses.fr/2013ESAE0031/document.

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Les micro-drones sont des aéronefs sans pilotes de dimensions inférieures à un mètre et de poids inférieur à deux kilogrammes. Ils se distinguent des aéronefs classiques pour plusieurs raisons : un cycle de développement plus court, un coût plus faible, leur facilité d'opération et des configurations de véhicules spécifiques. L'ensemble de ces points attendent une réponse spécifique dans le développement des lois de commandes. Cette thèse s'y intéresse à travers deux problématiques : la commande d'une famille de drones quadrirotors et celle d'un drone hybride. Une famille de drones représente

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38

Karimi, Pour Fatemeh. "Health-aware predictive control schemes based on industrial processes." Doctoral thesis, TDX (Tesis Doctorals en Xarxa), 2020. http://hdl.handle.net/10803/673045.

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The research is motivated by real applications, such as pasteurization plant, water networks and autonomous system, which each of them require a specific control system to provide proper management able to take into account their particular features and operating limits in presence of uncertainties related to their operation and failures from component breakdowns. According to that most of the real systems have nonlinear behaviors, it can be approximated them by polytopic linear uncertain models such as Linear Parameter Varying (LPV) and Takagi-Sugeno (TS) models. Therefore, a new economic Mod

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39

Fleps-Dezasse, Michael [Verfasser], Ferdinand [Akademischer Betreuer] Svaricek, Ferdinand [Gutachter] Svaricek, and Herbert [Gutachter] Werner. "Linear Parameter-Varying Control of Full-Vehicle Vertical Dynamics using Semi-Active Dampers / Michael Fleps-Dezasse ; Gutachter: Ferdinand Svaricek, Herbert Werner ; Akademischer Betreuer: Ferdinand Svaricek ; Universität der Bundeswehr München, Fakultät für Luft- und Raumfahrttechnik." Neubiberg : Universitätsbibliothek der Universität der Bundeswehr München, 2018. http://d-nb.info/1172763305/34.

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40

Alkhoury, Ziad. "Minimality, input-output equivalence and identifiability of LPV systems in state-space and linear fractional representations." Thesis, Poitiers, 2017. http://www.theses.fr/2017POIT2319/document.

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Dans cette thèse, plusieurs concepts importants liés à la théorie de la réalisation des modèles linéaires à paramètres variants (LPV) sont étudiés.Tout d’abord, nous abordons le problème de l’identifiabilité des modèles LPV affines (ALPV). Une nouvelle condition suffisante et nécessaire est introduite afin de garantir l’identifiabilité structurelle pour les paramétrages ALPV. L’identifiabilité de cette classe de paramétrages est liée à l’absence d’isomorphismes liant deux représentations d’état LPV lorsque deux modèles LPV correspondant à différentes valeurs des variables de séquencement sont

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41

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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42

Beteto, Marco Antonio Leite. "Less conservative conditions for the robust and Gain-Scheduled LQR-state derivative controllers design /." Ilha Solteira, 2019. http://hdl.handle.net/11449/180976.

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Orientador: Edvaldo Assunção<br>Resumo: Neste trabalho é proposta a resolução do problema do regulador linear quadrático (Linear Quadratic Regulator - LQR) via desigualdades matriciais lineares (Linear Matrix Inequalities - LMIs) para sistemas lineares e invariantes no tempo sujeitos a incertezas politópicas, bem como para sistemas lineares sujeitos a parâmetros variantes no tempo (Linear Parameter Varying - LPV). O projeto dos controladores é baseado na realimentação derivativa. A escolha da realimentação derivativa se dá devido à sua fácil implementação em certas aplicações como, por exemplo

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43

Yamamoto, Kazusa. "Control of electromechanical systems, application on electric power steering systems." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT069/document.

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De nos jours, la plupart des véhicules sont équipés de Directions Assistées Electriques (DAE). Ce type de systèmes d'aide à la conduite permet de réduire les efforts que le conducteur doit fournir pour tourner les roues. Ainsi, grâce à un moteur électrique, la DAE applique un couple additionnel en accord avec le comportement du conducteur et la dynamique du véhicule. Il est donc nécessaire de développer une commande en couple basée en particulier sur le signal provenant d'un capteur mesurant le couple agissant au niveau de la barre de torsion (correspondant à une image du couple conducteur). C

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44

Piccini, Jacopo. "Data Dependent Convergence Guarantees for Regression Problems in Neural Networks." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/24218/.

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It has been recently demonstrated that the artificial neural networks’ (ANN) learning under gradient descent method, can be studied using neural tangent kernel (NTK). This thesis’ goal is to show how techniques related to control theory, can be applied to model and improve the hyperparameters training dynamics. Moreover, it will be proven how by using methods from linear parameter varying (LPV) theory can allow the exact representation of the learning dynamics over its whole domain. The first part of the thesis is dedicated to the modelling and analysis of the system. The modelling of simple

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45

Nguyen, Manh Quan. "LPV approaches for modelling and control of vehicle dynamics : application toa small car pilot plant with ER dampers." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT091/document.

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La suspension joue un rôle central pour la dynamique verticale d’un véhicule automobile afin d’améliorer le confort des passagers et la tenue de route. Les travaux de recherche de cette thèse sont divisés en deux grandes parties. La première partie considère le problème de commande d’une suspension semi-active dont le défi principal est de prendre en compte les contraintes de dissipativité et de débattement maximum des amortisseurs. Celles-ci sont transformées en des contraintes sur la commande et l’état d‘un système linéaire. Deux approches sont alors proposées pour la synthèse de la commande

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Okumu, Emmanuel Latim. "Non-linear prediction in the presence of macroeconomic regimes." Thesis, Uppsala universitet, Statistiska institutionen, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-297222.

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This paper studies the predictive performance and in-sample dynamics of three regime switching models for Swedish macroeconomic time series. The models discussed are threshold autoregressive (TAR), Markov switching autoregressive (MSM-AR), and smooth-transition autoregressive (STAR) regime switching models. We perform recursive out-of-sample forecasting to study the predictive performance of the models. We also assess the in-sample dynamics correspondence to the forecast performance and find that there is not always a relationship. Furthermore, we seek to explore if these unrestricted models y

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López, Estrada Francisco Ronay. "Model-based fault diagnosis observer design for descriptor LPV system with unmeasurable gain scheduling." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0162/document.

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Ce mémoire de thèse est consacré à la conception de méthodes de diagnostic à base de modèles fondées sur les observateurs pour les systèmes non linéaires modélisés comme des systèmes singuliers (D) linéaires à paramètres variants (LPV), notés D-LPV (Descriptor-Linear Parameter Varying). Les systèmes D-LPV constituent une classe particulière de systèmes approximant avec un certain degré de précision la dynamique des systèmes complexes non linéaires à partir d’une combinaison de modèles linéaires locaux pondérés par des fonctions convexes d'ordonnancement. Dans le contexte de l’apparition de déf

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Bainier, Gustave. "Contributions géométriques à l’étude des systèmes LPV et de Takagi-Sugeno." Electronic Thesis or Diss., Université de Lorraine, 2024. http://www.theses.fr/2024LORR0150.

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Cette thèse explore la théorie du contrôle non linéaire par le prisme des modèles LPV (Linéaires à Paramètres Variants) et T-S (Takagi-Sugeno), en se concentrant sur l'amélioration de leur flexibilité et de leur efficacité. Les principales contributions de cette thèse portent sur l'introduction d'outils géométriques qui n'avaient pas été utilisés auparavant dans ces contextes. Il est notamment montré que les coordonnées barycentriques jouent un rôle clé dans la modélisation des systèmes T-S par l'approche par secteur non linéaire (Chapitre 3), et que des outils inspirés des complexes simplicia

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Bertrand, Loïc. "Hot rolling friction control through lubrication." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0146.

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Cette thèse porte sur l’amélioration du laminage à chaud, un procédé de fabrication sidérurgique permettant de transformer une brame de métal (10m de long, 1.5m de large et 250mm d’épaisseur) en une bande de tôle bobinée (1000m de long, 1m de large et 2mm d’épaisseur). Afin d’obtenir certaines propriétés mécaniques et de faciliter la phase de laminage, la brame est réchauffée à 1300°C et dégrossi avant d’être envoyé vers le train finisseur où elle est laminée en passant successivement dans plusieurs cages (ensemble de cylindres qui écrasent le métal) et qui permettent de réduire l’épaisseur à

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Penco, Dario. "Contrôle véhicule autonome. Contrôle robuste et haute performance pour permettre les manœuvres à haute dynamique des véhicules autonomes." Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPASG039.

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Le travail abordé dans ces travaux de thèse se place dans le contexte de la conduite autonome. Plus particulièrement, l'objectif est le développement d'une loi de commande pour le suivi de trajectoire d'un véhicule autonome pour des manœuvres d'évitement d'obstacles à haute dynamique.Plusieurs modèles non-linéaires de dynamique du véhicule, capables de représenter son comportement dans des manœuvres à haute dynamique, sont proposés. Le but de la modélisation est d'obtenir un modèle pour la synthèse des correcteurs. L'ensemble de modèles proposés considère les dynamiques des vitesses longitudin

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