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Dissertations / Theses on the topic 'State observer design'

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Published: 4 June 2025

Last updated: 1 August 2025

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1

Yildiz, Ugur. "Multicomponent Batch Distillation Column Simulation And State Observer Design." Master's thesis, METU, 2002. http://etd.lib.metu.edu.tr/upload/12605551/index.pdf.

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In the control of batch and continuous distillation columns, one of the most challenging problem is the difficulty in measuring compositions. This problem can be handled by estimating the compositions from readily available online temperature measurements using a state observer. The aim of this study is to design a state observer that estimates the product composition in a multicomponent batch distillation column (MBDC) from the temperature measurements and to test this observer using a batch column simulation. To achieve this, first a model for MBDC is prepared and compared with the data from

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2

El-Shafey, Mohamed Hassan. "Linear continuous-time system identification and state observer design by modal analysis." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/28666.

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A new approach to the identification problem of linear continuous-time time-invariant systems from input-output measurements is presented. Both parametric and nonparametric system models are considered. The new approach is based on the use of continuous-time functions, the modal functions, defined in terms of the system output, the output derivatives and the state variables under the assumption that the order n of the observable system is known a priori. The modal functions are obtained by linear filtering operations of the system output, the output derivatives and the state variables so that

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3

Ferrante, Francesco. "On quantization and sporadic measurements in control systems : stability, stabilization, and observer design." Thesis, Toulouse, ISAE, 2015. http://www.theses.fr/2015ESAE0020/document.

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Dans cette thèse, nous aborderons deux aspects fondamentaux qui se posent dans les systèmes de commande modernes du fait de l'interaction entre des processus en temps continu et des dispositifs numériques: la synthèse de lois de commande en présence de quantificateurs et l'estimation d'état en présence de mesures sporadiques. Une des caractéristiques principales de cette thèse consiste également à proposer des méthodes constructives pour résoudre les problèmes envisagés. Plus précisément, pour répondre à cette exigence, nous allons nous tourner vers une approche basée sur les inégalités matric

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4

Lim, Hong Sun. "Design and Control of A Ropeless Elevator with Linear Switched Reluctance Motor Drive Actuation Systems." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/26541.

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Linear switched reluctance motor (LSRM) drives are investigated and proved as an alternative actuator for vertical linear transportation applications such as a linear elevator. A one-tenth scaled prototype elevator focused on a home elevator with LSRMs is designed and extensive experimental correlation is presented for the first time. The proposed LSRM has twin stators and a set of translator poles without back-iron. The translators are placed between the two stators. The design procedures and features of the LSRM and the prototype elevator are described. The designed LSRM is validated throug

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5

Castillo, Frasquet Alberto. "Novel Strategies to design Controllers and State Predictors based on Disturbance Observers." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/165034.

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[ES] Los sistemas de ingeniería o físicos suelen ser inciertos. Su incertidumbre se manifiesta cuando el sistema muestra comportamientos que son relativamente diferentes a los que su modelo predice; estando principalmente causada por: errores de modelado; dinámicas desconocidas; cambios en las propiedades del sistema; interacciones aleatorias con otros sistemas; o cambios en las condiciones de operación. Durante los últimos 40 años, se ha demostrado reiteradamente que las incertidumbres de los sistemas pueden tener efectos muy negativos sobre el comportamiento de un controlador si éstas no

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6

Rager, David, Rüdiger Neumann, and Hubertus Murrenhoff. "Remote Pressure Control - Considering Pneumatic Tubes in Controller Design." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200510.

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In pneumatic pressure control applications the influence of tubes that connect the valve with the control volume ist mainly neglected. This can lead to stability and robustness issues and limit either control performance or tube length. Modeling and considering tube behavior in controller design procedure allows longer tubes while maintaining the required performance and robustness properties without need for manual tuning. The author\'s previously published Simplified Fluid Transmission Line Model and the proposed model-based controller design enable the specification of a desired pressure tr

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7

Foulard, Stéphane. "Online and real-time load monitoring for remaining service life prediction of automotive transmissions : damage level estimation of transmission components based on a torque acquisition." Thesis, Ecully, Ecole centrale de Lyon, 2015. http://www.theses.fr/2015ECDL0012.

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Ce travail de recherche propose le développement et la validation d’une méthode de prédiction in-situ et temps réel de la durée de vie utile restante des engrenages de boîtes de vitesses automobiles de série. Cette méthode est destinée à être implantée dans des unités de commande électronique standards. En s’attachant tout particulièrement à proposer une solution simple, fiable, rentable et facilement transposable pour tout type de configuration, le système se base sur la combinaison d’une méthode d’acquisition des couples agissants sur la boîte de vitesses et d’une estimation continue des niv

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8

Dang, Quoc-Viet. "Conception et commande d'une interface haptique à retour d'effort pour la CAO." Phd thesis, Université de Valenciennes et du Hainaut-Cambresis, 2013. http://tel.archives-ouvertes.fr/tel-00985356.

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Les interfaces haptiques à retour d'effort sont des dispositifs robotiques capables deproduire des forces à destination de l'utilisateur en téléopération et en réalité virtuelle. L'utilisation d'interface à retour d'effort en Conception Assistée par Ordinateur (CAO) offre de nouvelles perspectives pour la création et la conception de formes 3D grâce à une interactivité à la fois visuelle et kinesthésique. Elles permettent à la fois de visualiser, de manipuler en temps réel des objets virtuels et d'en ressentir les efforts (liés aux contacts, à la déformation, etc.).Les travaux présentés dans c

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9

Bakri, Nizar. "Asservissement par camera d'un pendule inverse." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13222.

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10

Firdaus, Ahmad Riyad. "Design of sliding mode-based nonlinear control systems with nonlinear full-order state observers for underactuated coupled systems." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/20897/.

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11

Do, Manh Hung. "Synthèse robuste d'observateurs pour systèmes singuliers linéaires à paramètres variants." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALT053.

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Cette thèse s'inscrit dans le cadre de l'étude de l'estimation d'état et des défauts des systèmes dynamiques Linéaires à Paramètres Variants (LPV). La thèse s'attache à considérer deux classes de systèmes : les systèmes réguliers et les systèmes singuliers. Les estimateurs proposés sont synthétisés pour être robustes aux incertitudes paramétriques, aux perturbations présentes sur l'équation d'état et de sortie, aux bruits de mesures, aux non-linéarités Lipchitziennes et aux retards. Les contributions majeures de ses travaux sont respectivement : la conception simultanée d'un régulateur et d'un

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12

Veloso, Ana C. A. "Optimização de estratégias de alimentação para identificação de parâmetros de um modelo de E. coli. utilização do modelo em monitorização e controlo." Doctoral thesis, Universidade do Minho, 2007. http://hdl.handle.net/10198/1049.

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Os principais objectivos desta tese são: o desenho óptimo de experiências para a identificação de coeficientes de rendimento de um modelo não estruturado de um processo de fermentação semicontínua de Escherichia coli; a verificação experimental das trajectórias de alimentação obtidas por simulação; o desenvolvimento de estratégias de monitorização avançada para a estimação em linha de variáveis de estado e parâmetros cinéticos; e por fim o desenvolvimento de uma lei de controlo adaptativo para controlar a taxa específica de crescimento, com base em estratégias de alimentação de substrato com v

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13

Veloso, Ana C. A. "Optimização de estratégias de alimentação para identificação de parâmetros de um modelo de E. coli. utilização do modelo em monitorização e controlo." Doctoral thesis, Universidade do Minho, 2007. http://hdl.handle.net/1822/6289.

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Doutoramento em Engenharia Química e Biológica<br>Os principais objectivos desta tese são: o desenho óptimo de experiências para a identificação de coeficientes de rendimento de um modelo não estruturado de um processo de fermentação semicontínua de Escherichia coli; a verificação experimental das trajectórias de alimentação obtidas por simulação; o desenvolvimento de estratégias de monitorização avançada para a estimação em linha de variáveis de estado e parâmetros cinéticos; e por fim o desenvolvimento de uma lei de controlo adaptativo para controlar a taxa específica de crescimento, com b

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14

"MULTICOMPONENT BATCH DISTILLATION COLUMN SIMULATION AND STATE OBSERVER DESIGN." Master's thesis, METU, 2002. http://etd.lib.metu.edu.tr/upload/12605551/index.pdf.

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15

Bolandhemmat, Hamidreza. "Distributed Sensing and Observer Design for Vehicles State Estimation." Thesis, 2009. http://hdl.handle.net/10012/4471.

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A solution to the vehicle state estimation problem is given using the Kalman filtering and the Particle filtering theories. Vehicle states are necessary for an active or a semi-active suspension control system, which is intended to enhance ride comfort, road handling and stability of the vehicle. Due to a lack of information on road disturbances, conventional estimation techniques fail to provide accurate estimates of all the required states. The proposed estimation algorithm, named Supervisory Kalman Filter (SKF), consists of a Kalman filter with an extra update step which is inspired by the

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16

Yeh, Cheng-Hsuan, and 葉丞軒. "DESIGN OF ADAPTIVE FUZZY SLIDING MODE CONTROLLER WITH STATE OBSERVER." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/46594759813953754610.

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碩士<br>大同大學<br>電機工程研究所<br>91<br>In this thesis, an observer-based adaptive fuzzy sliding mode controller for a certain class of unknown nonlinear dynamical system is presented. The total states of the nonlinear system are not to be available for measurement; hence a state observer will be designed to estimate the nonlinear system states. By using an observer-based output feedback control law and adaptive law, the parameters of the adaptive fuzzy sliding mode controller can be tuned based on the Lyapunov stability analyzes. Moreover, we provide a weighting factor, it will be adjuste

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17

Chang, Keng-Hao, and 張耿豪. "DESIGN OF SLIDING MODE CONTROLLERWITH ROBUST STATE OBSERVER FORTIME-DELAY SYSTEMS." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/09655535605402113761.

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碩士<br>大同大學<br>電機工程學系(所)<br>92<br>The problem of stabilizing a class of perturbed linear dynamic systems with time delay is investigated in this thesis. By applying the Lyapunov stability theorem, we develop integral variable structure controller to drive the output of system to approach the desired signal asymptotically. Based on the integral variable structure control technique, while the system is in the sliding mode, the dynamic equations of the closed-loop system can be reduced to a linear form and all the poles can be arbitrarily assigned. In addition, while the state variables are not

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18

Li, Tzu-Hsuan, and 李姿璇. "DESIGN OF ADAPTIVE FUZZY INTEGRAL SLIDING MODE CONTROLLER WITH STATE OBSERVER." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/41247886980293662114.

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碩士<br>大同大學<br>電機工程學系(所)<br>92<br>In this thesis, an observer-based adaptive fuzzy integral sliding mode control (AFISMC) scheme is proposed for a certain class of unknown nonlinear dynamical system. This scheme is composed of two types of controllers. One is sliding mode controller, which gives robust stability for system in the presence of parameter variations, uncertainties, and disturbances. The other is an integral controller, which can eliminate steady-state error. A procedure is developed for determining the coefficients of the switching plane and the integral control gain such that

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19

Hsieh, Yi-Che, and 謝宜哲. "H∞ Controller and State Feedback Observer Design based on Homogeneous SOS." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/88613924483675952623.

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碩士<br>國立中央大學<br>機械工程學系<br>103<br>In this thesis, a polynomial nonlinear system, modelled by T-S fuzzy model with added disturbances, is studied. Based on non-quadratic, homogeneous Lyapunov function, both controller and observer are considered in the analysis where Euler's homogeneous polynomial theorem is used to avoid the derivative term dot Q(x) that is seen in the existing papers. After some background reviewed, we started with fuzzy system models established by Taylor series. To tackle the derivative Lyapunov dot Q(x) terms and the zero row structure in the input matrix B(x) in the exist

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20

Lin, Yu-Cyuan, and 林育全. "State Observer and Robust Controller Design of Uncertain Linear Systems with Time-varying State and Input Delays." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/36175374937993755178.

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碩士<br>國立高雄應用科技大學<br>電機工程系<br>97<br>The problems of observer-based robust stabilization of uncertain linear systems with time-varying state and input delays with norm-bounded parametric uncertainty are studied in this thesis. Sufficient conditions are given for the existence of the state observer and observer-based robust controller for such uncertain system via the Lyapunov-Krasovskii functional. The detail design procedure of the state observer and observer-based robust controller are presented by solving two-stage two linear matrix inequalities (LMIs). Because of the length and complexity of

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21

CHEN, YUNG-LIANG, and 陳永良. "System Modelling and Observer-Based State-Feedback Controller Design of Unmanned Air Vehicle MP2000UAV." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/47235077805285384291.

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碩士<br>正修科技大學<br>機電工程研究所<br>93<br>Autopilot is the key technology to unmanned air vehicle (UAV) applications. The mathematical model is indispensable to the analysis and design of control law in autopilot. In the thesis the mathematical model of MP2000UAV is built in detail, and the corresponding numerical model is obtained by substituting the aerodynamic coefficients identified based on flight testing data of MP2000UAV. The observer-based state-feedback controller is designed by pole assignment technique for the autopilot of MP2000UAV. The contributions of the thesis are as follows. (1) The mo

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22

Majeed, Muhammad Usman. "Iterative Observer-based Estimation Algorithms for Steady-State Elliptic Partial Differential Equation Systems." Diss., 2017. http://hdl.handle.net/10754/625240.

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A recording of the defense presentation for this dissertation is available at: http://hdl.handle.net/10754/625197<br>Steady-state elliptic partial differential equations (PDEs) are frequently used to model a diverse range of physical phenomena. The source and boundary data estimation problems for such PDE systems are of prime interest in various engineering disciplines including biomedical engineering, mechanics of materials and earth sciences. Almost all existing solution strategies for such problems can be broadly classified as optimization-based techniques, which are computationally heavy e

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23

Chen, Chu-Yi, and 陳居繄. "STATE OBSERVER-BASED ROBUST ADAPTIVE FUZZY CONTROLLER DESIGN FOR A CLASS OF UNCERTAIN NONLINEAR DISCRETE-TIME SYSTEMS." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/873qxc.

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碩士<br>大同大學<br>電機工程學系(所)<br>95<br>In this thesis, the design methods of observer-based robust adaptive fuzzy control and observer-based robust adaptive fuzzy sliding mode control are proposed to deal with robust characteristics and stability analysis of nonlinear discrete-time systems with uncertainties, whose states are not available for measurement. According to some adaptive laws, the unknown nonlinear functions and the uncertainties of the plant can be approximated by fuzzy logic systems, and the compensator with a sector is used to tackle the approximate errors which are caused by the abov

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24

Wu, Wen-Yuan, and 吳文元. "H∞ Fuzzy Controller Design for Discrete Stochastic T-S Fuzzy System with Multiple Noises via Observer-state Feedback." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/22515948402678880202.

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碩士<br>國立臺灣海洋大學<br>輪機工程系<br>97<br>This thesis discusses a class of discrete-time observer-based nonlinear stochastic systems, which are modeled by the Takagi-Sugeno (T-S) fuzzy models. Because of the dynamic properties of T-S fuzzy model and nonlinear system are similar; hence, we can represent the nonlinear systems by T-S fuzzy models. According to Parallel Distributed Compensation (PDC) concept, the nonlinear stochastic systems can be driven by the linear feedback gains. Through the Lyapunov stability criterion and two-step Linear Matrix Inequality (LMI) algorithm, the stability analysis and

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25

Yan, Huai-Ting, and 顏槐廷. "DESIGN OF SLIDING MODE CONTROLLER WITH ROBUST STATE OBSERVER FOR TIME-DELAY SYSTEMS WITH INPUT CONTAINING SECTOR NONLINEARITIES AND DEAD-ZONE." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/62919301414659044950.

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碩士<br>大同大學<br>電機工程學系(所)<br>93<br>In this thesis, the control design problem of stabilizing an uncertain time-delay system with nonlinear input. The uncertainties are time-varying and bounded. The nonlinear input is a class of nonlinear continuous function with sector bounded. Because dead-zone characteristics are naturally originate from actuators in the system realization. Consequently, the nonlinear input in this thesis is containing not only sector bounded nonlinearities but also dead-zone. Base on Lyapunove stability theorem, we design a sliding mode controller with integral function to gu

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26

Huang, Hsin-Yu, and 黃信裕. "DESIGN AND IMPLEMENTATION OF NONLINEAR STATE-OBSERVERS." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/28326603345964736829.

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碩士<br>大同大學<br>化學工程研究所<br>91<br>Chemical processes are often complex nonlinear system and there are limited available instrumentations to measure all the state variables on-line. When these state variables are to be monitored, controlled or optimized on-line, a nonlinear state observer is required to estimate these immeasurable variables. An observer with acceptable performance shall be designed to ensure a fast decay of the tracking error. In this research, some existing observers were discussed and compared to develop an observer with robust performance in application. In this stud

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27

Fu-IChou and 周阜毅. "Intelligent Optimal Design of State Observers with Specified Performance." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/m8w4w6.

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博士<br>國立成功大學<br>電機工程學系<br>107<br>Several new methods have been proposed in this dissertation to design state observers (also called soft sensors) such that (i) the eigenvalues are specified to satisfy desired convergence performance or the state estimation errors quickly converge to zero, and (ii) simultaneously, a quadratic performance measurement of the deviation of estimates from the actual states is minimized for reducing large error during the transient period of observation. By combining the merits of both the orthogonal functions approach (OFA) and intelligent evolutionary optimization

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28

Wen, Sheng-Fan, and 溫盛帆. "Charge Feedback Hysteresis Disturbance Observer Design of a Multi-axis Piezo-actuated Stage." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/85133219651842456001.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>102<br>Piezo-actuated stage has excellent dynamic response and high resolution, and is widely used in micro- or nanoscale precision positioning systems. However, the nonlinearities such as hysteresis and creep make its control very difficult. In this thesis, the hysteresis nonlinearity is considered as an extra disturbance over a linear system. A novel approach using the parasitic capacitance charge feedback in conjunction with a Preisach model to estimate the hysteresis disturbance is proposed. The charge over the parasite capacitance is measured through a seriall

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YEH, YI-LIN, and 葉怡麟. "Variance Constrained T-S Fuzzy Controller Design for Nonlinear Stochastic Systems via Observed-State Feedback Gains." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/51956386742249932517.

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碩士<br>國立臺灣海洋大學<br>輪機工程系<br>92<br>A complete approach, which is called covariance control theory, for assigning the entire state covariance matrix to the closed-loop systems via state feedback or output feedback controllers has been developed in past years. However, the systems considered in these literatures are often linear ones. Hence, we will attempt to extend the covariance control theory to nonlinear stochastic systems in this thesis. This thesis discusses a class of continuous-time and discrete-time observer-based nonlinear stochastic systems, which are modeled by the Takagi-Sugeno (T-S)

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"Design and application of state observers for exothermic fed-batch reactors with uncertain kinetics and heat transfer." Université catholique de Louvain, 2007. http://edoc.bib.ucl.ac.be:81/ETD-db/collection/available/BelnUcetd-12102007-095511/.

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