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許強 i Keung Hui. "A unified approach to controller saturation". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B4257447X.
Pełny tekst źródłaHui, Keung. "A unified approach to controller saturation". Click to view the E-thesis via HKUTO, 1995. http://sunzi.lib.hku.hk/hkuto/record/B4257447X.
Pełny tekst źródłaBui-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.
Pełny tekst źródłaThe dissertation is devoted to developing a methodology of stability and stabilization for the linear parameter-dependent (PD) and time-delay systems (TDSs) subject to control saturation. In the industrial process, control signal magnitude is usually bounded by the safety constraints, the physical cycle limits, and so on. For this reason, a suitable synthesis and analysis tool is needed to accurately describe the characteristics of the saturated linear parameter-varying (LPV) systems. In the part one, a parameter-dependent form of the generalized sector condition (GSC) is considered to solve the saturated stabilization problem. Several feedback control strategies are investigated to stabilize the saturated LPV/qLPV systems. Necessary and sufficient stabilization conditions via the parameterized linear matrix inequality (PLMI) formulation proposed for the feedback controllers conforming to the design requirements (i.e., the admissible set of the initial conditions, the estimated region of the asymptotic convergence domain, the robust stability and performance with the influence of perturbations, Etc.). The relaxation of the designed PLMIs is shown through the comparison results using a parameter-dependent Lyapunov function (PDLF). In the second part, the delay-dependent stability developments based on Lyapunov-Krasovskii functional (LKF) are presented. The modern advanced bounding techniques are utilized with a balance between conservatism and computational complexity. Then, saturation stabilization analyzes for the gain-scheduling controllers. Inspired by uncertain delay system methods, a novel stabilization condition is derived from the delay-dependent stabilizing analysis for the LPV time-delay system subject to saturation constraints. In this aspect, the stabilizing gain-scheduling feedback controllers improve the performance and stability of the saturated system and provide a large attraction domain. It can be emphasized that the derived formulation is general and can be used for the design control of many dynamic systems. Finally, to maximize the attraction region while guaranteeing the asymptotic stability of the closed-loop system, an optimization problem is included to the proposed control design strategy
Wen, Zheng. "On the external stability of linear systems with actuator saturation constraints, and the decentralized control of communicating-agent networks with security constraints". Online access for everyone, 2007. http://www.dissertations.wsu.edu/Thesis/Summer2007/z_wen_072307.pdf.
Pełny tekst źródłaKiener, Georg Alexander. "Event-triggered control subject to actuator saturation". Thesis, KTH, Reglerteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-98840.
Pełny tekst źródłaKannan, Suresh Kumar. "Adaptive Control of Systems in Cascade with Saturation". Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7566.
Pełny tekst źródłaBrowne, Michael John. "A unified strategy for windup prevention in control systems with multiple saturating actuators". Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51629.
Pełny tekst źródłaENGLISH ABSTRACT: A unified method is proposed to treat saturation in both Multi-Input-Multi-Output MIMO and Single-Input-Single-Output controllers. This method offers superior performance over existing MIM 0 anti-saturation schemes. The anti-saturation problem is posed as a linear programming problem. A practical and efficient implementation of the algorithm is developed by transforming the problem into its dual linear programming form. The problem, in dual form, is then solved using the dual simplex method rather than the primal simplex method. The nature of the problem when expressed in dual form and the properties of the dual simplex method are harmonised to guarantee an initial basic feasible solution and an optimal bounded final solution in a finite, predictable and minimal number of iterations. The resultant controller never saturates, hence cannot windup. Furthermore the resultant controller always applies the optimal control effort to the plant to minimise the error signal input as follows: • The controller is governed such that while the future free response combined with the present forced response of the controller results in no saturation limits being exceeded, now or at some time in the future, the normal linear response of the controller prevails. • When the future free response combined with the present forced response of the controller will result in a saturation limit being reached, now or at some time in the future, the present time input signal into the controller is optimally governed to prevent the saturation limit from being exceeded at any future time.
AFRIKAANSE OPSOMMING: 'n Metode word voorgestel waarmee versadiging in enkel-inset enkel-uitset en meer-inset meeruitset (MIMU) stelsels beheer kan word. Die metode presteer beter as ander huidige teenversadiging- maatreels vir (MIMU) beheerders. Die teen-versadigings-probleem word as 'n lineere programmeringsprobleem herformuleer. 'n Praktiese en effektiewe implementering van die algoritme word verkry deur die probleem na die duale vorm te transformeer. Die probleem, in duale vorm, word opgelos met die duale simplex metode, in plaas van die direkte metode. Die eienskappe van hierdie formulering is 'n gewaarborgde, aanvanklike, bereikbare oplossing en 'n optimale, begrensde, finale oplossing in 'n eindige, voorspelbare en minimum aantal stappe. Die uiteindelike beheerder versadig nooit nie, en wen gevolglik nie op nie. Die beheerder wend altyd die optimale aanleg-inset aan om die foutsein te minimeer soos volg: • Wanneer die nul-inset gedrag saam met die huidige inset-gedrag geen beperkings nou of in die toekoms saloorskry nie, word geen beperkende aksie geneem nie, en tree die beheerder dus lineer op. • Sodra die toekomstige nul-inset gedrag saam met die huidige inset-gedrag, nou of later versadiging sou veroorsaak, word die huidige inset tot die beheerder optimaal begrens om latere versadiging te voorkom.
Ljudén, Erik. "Actuator Saturation Analysis of a Fly-By-Wire Control System for a Delta-Canard Aircraft". Thesis, KTH, Flygdynamik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276461.
Pełny tekst źródłaStyrdonsmättning är ett välstuderat ämne inom kontrollteorin. Däremot existerar det lite forskning gällande flygplansbeteende vid styrdonsmättning. Syftet med den här rap-porten är att identifiera flygmekaniska parametrar som kan vara användbara vid analys av styrdonsmättning av ett instabilt delta-canard flygplan. Genom att variera flygplan-ets tyngdpunkt och applicera en pulsinmatning i tippled har styrdonsmättning hittats och undersökts närmare med momentkoeÿcienter, men även med andra flygmekaniska parametrar. De studerade parametrarna har visat sig vara mycket relevanta vid analys av styrdonsmättning och ett enkelt samband mellan mättade styrdon och momentcoeÿcienter har hittats. Det går till exempel att leta efter plötsliga ändringar i momentkoeÿcienterna under mättning av styrdon för att hitta potentiellt farliga flygsituationer. De studerade parametrarna kan användas i en robusthetsanalys, men vidare forskning krävs. Den studerade pulsinmatningen i tippled visar även att så länge canarderna inte ligger i mät-tning, trots att elevonerna ligger i mättning, så är det ingen fara att flyga, förutsatt att flyghastigheten är tillräckligt hög.
Carniato, Leonardo Ataide. "Robust H∞ switched static output feedback control design for linear switched systems subject to actuator saturation /". Ilha Solteira, 2019. http://hdl.handle.net/11449/183007.
Pełny tekst źródłaResumo: Este trabalho dedica-se ao estudo do problema de controle robusto envolvendo custo H∞ para sistemas lineares chaveados no tempo contínuo, sujeitos à saturação no atuador e com incertezas politópicas, considerando leis de chaveamento e controladores chaveados dependentes da saída da planta. Os métodos propostos oferecem novas condições baseadas em Desigualdades Matriciais Lineares (LMIs - do inglês, Linear Matrix Inequalities) para o projeto de controladores chaveados utilizando funções de Lyapunov dependentes de parâmetros. O método é baseado em um resultado recentemente introduzido na literatura para o projeto de controle H∞ de saída o qual evita igualdades matriciais lineares (LMEs - do inglês, Linear Matrix Equalities) e a necessidade de impor restrições nas matrizes de saída do sistema, isto é, as matrizes de saída do sistema podem ser de posto linha incompleto. Com o objetivo de estender estes resultados, a restrição de saturação no atuador é estudada. Análises teóricas e resultados de simulações mostram que os novos procedimentos são menos conservativos quando comparados a métodos publicados recentemente na literatura. No método proposto, as condições são uma classe particular de desigualdades matriciais bilineares (BMIs - do inglês, Bilinear Matrix Inequalities), as quais contêm alguns termos bilineares devido à multiplicação de matrizes por escalares. Estes termos estão relacionados à combinação convexa das matrizes de chaveamento bem como a outros parâmetros escalare... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: This thesis is devoted to the study of the robust H∞ control problem of continuous-time switched linear systems subject to actuator saturation with polytopic uncertainties, considering an output-dependent switching law and a switched static output feedback controller. The proposed method offers new sufficient conditions based on linear matrix inequalities (LMIs) for designing the switched controllers using parameter-dependent Lyapunov functions. The method is based on a static output feedback H∞ control design recently presented in the literature that avoids linear matrices equalities (LMEs) and the need to impose any constraints on output system matrices, that is, the output matrices of the system are allowed to be of non-full row rank. In order to extend those results, the actuator saturation constraint is also studied. Theoretical analyses and simulation results show that these new procedures are less conservative than recent methods available in the literature. The conditions of the proposed methods are a particular class of Bilinear Matrix Inequalities (BMIs), which contain some bilinear terms as the product of a matrix and a scalar, related to a suitable convex combination and scalars parameters to provide extra free dimensions in the solution space. The hybrid algorithm Differential Evolution-Linear Matrix Inequality (DE-LMI), is proposed for obtaining feasible solutions of this particular NP-hard problem. Examples show that the proposed methodologies reduce the design ... (Complete abstract click electronic access below)
Doutor
Ts`oeu, M. S. "Proton beam steering control system for high precision radiotherapy at iThemba LABS : an investigation on actuator saturation constraints". Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/5095.
Pełny tekst źródłaIncludes bibliographical references (leaves 101-106).
This thesis aims at studying some of the techniques used to deal with constraints with special application to the Proton beam steering control at iThemba LABS. The steering of charged particles occurring in research plants is one of the interests of control systems. In this work an investigation of the algorithm for the control of the proton beam steering system in the radiotherapy treatment facility at iThemba LABS is conducted. This algorithm is intended to autonomously maintain the beam centered with reference to the axis of the beamline, and keep the beam front parallel to the central axis of the beamline as stated by van Tubbergh and De Kock, 2006. Furthermore, the algorithm is responsible for monitoring the distribution of the proton beam, in a plane normal to the beam travel direction.
Nunes, Willian Ricardo Bispo Murbak. "A new dynamic model applied to electrically stimulated lower limbs and switched control design subject to actuator saturation and non-ideal conditions /". Ilha Solteira, 2019. http://hdl.handle.net/11449/183168.
Pełny tekst źródłaAbstract: Electrical stimulation is a promising technique for motor rehabilitation in cases of spinal cord injury. Stimulator saturation is important in the control system designs applied to electrical stimulation. The negligence of the actuator saturation in the electrical stimulation can lead to unwanted control results, which evidences the muscular fatigue effects. For the first time a switched controller subject to actuator saturation for electrically stimulated lower limb is proposed. The dynamic limb extension model is nonlinear and uncertain. The uncertain nonlinear system described by Takagi-Sugeno fuzzy models operating within an operating region in the state space is considered in this study. In addition, fault in the actuator, muscle activation uncertainty, and muscular non-idealities, such as fatigue, spasms, and tremor were considered at three three severity levels. The switched controller is compared to parallel distributed compensation technique. Simulations denote better results of the switched controller by dealing with parametric uncertainties. On the other hand, a challenge for FES control systems is to monitor torque in muscle contractions. In isotonic contraction applications, measuring torque is difficult. The novelty in this study is the proposal of a new nonlinear model, whose state variables are angular position, angular velocity and angular acceleration. In this new model the torque variable is replaced by the angular acceleration. Experimental tests list the ... (Complete abstract click electronic access below)
Resumo: A estimulação elétrica é uma técnica promissora para reabilitação motora em casos de lesão medular. A saturação do estimulador também é um requisito importante no projeto de sistemas de controle aplicados à estimulação elétrica. A negligência da saturação do atuador pode conduzir a resultados de controle indesejados, que evidencia os efeitos de fadiga muscular. Pela primeira vez é proposto um controlador chaveado sujeito à saturação para membro inferior estimulado eletricamente. O modelo dinâmico de extensão do membro inferior é não linear e incerto. O sistema descrito por modelos fuzzy Takagi-Sugeno e operando dentro de uma região de operação no espaço de estados é considerado neste trabalho. Além disto, falha do atuador, incerteza de ativação muscular, e não idealidades musculares, tais como fadiga, espasmos e tremor foram considerados em três níveis de severidade. O controle chaveado é comparado com a compensação distribuída paralela. Simulações denotam melhores resultados do controlador chaveado lidando com incertezas paramétricas da planta. Por outro lado, um desafio dos sistemas de controle para estimulação elétrica funcional é monitorar a dinâmica do torque em contrações musculares. Em aplicações de contração isotônica, medir o torque é algo difícil. A novidade neste estudo é a proposta de um novo modelo não linear, cujas variáveis de estado são posição angular, velocidade angular e aceleração angular. Neste novo modelo a variável torque é substituída adequadamente pel... (Resumo completo, clicar acesso eletrônico abaixo)
Doutor
Silva, Leidy Diane Wolmuth. "Controle H_infinito chaveado com realimentação derivativa de sistemas lineares incertos considerando a saturação do sinal de controle /". Ilha Solteira, 2019. http://hdl.handle.net/11449/191078.
Pełny tekst źródłaResumo: Esta tese propõe projetos de controle H_infinito e controle H_infinito chaveado para uma classe de sistemas lineares com incertezas invariantes no tempo, nos quais apenas a derivada do vetor de estado é considerada para realimentação. Neste cenário, as estratégias propostas utilizam dinâmicas auxiliares, cujas variáveis de estado estão disponíveis para realimentação, para controlar a planta original. São propostas estruturas e procedimentos de projeto por meio de desigualdades matriciais lineares. A primeira estrutura de controle apresentada, considera a saturação do atuador e um integrador para definir a estratégia de controle, e se as condições propostas são factíveis, assegura que o ponto de equilíbrio do sistema de malha fechada seja localmente assintoticamente estável, para todas as condições iniciais em uma região elipsoidal, contida em uma determinada região definida para a nova dinâmica. Na segunda estrutura, é proposta uma técnica sem o uso de integradores para definir as estratégias para o controle chaveado e controle H_infinito chaveado, para plantas com e sem saturação da entrada de controle. Na terceira estrutura, considera-se um caso mais geral porém com o uso de integradores para definir as estratégias para o controle chaveado e controle H_infinito chaveado, para plantas sem saturação da entrada de controle. Embora todos os projetos propostos considerem a dinâmica auxiliar, são asseguradas as propriedades de estabilidade, taxa de decaimento e custo garantido pa... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: This thesis proposes H_infinite switched control designs for a class of linear systems with time invariant uncertainties, where only the derivative of the state vector is considered for feedback. In this scenario, the proposed strategies use auxiliary dynamics, whose state variables is accessible for feedback, to control the original plant. The proposed structures and design procedures are based on LinearMatrix Inequalities (LMIs). The first structure considers the actuator saturation and an integrator to define the control strategy, and if the proposed conditions are feasible, it assures that the equilibrium point of the closed-loop system is locally asymptotically stable, for all initial conditions in an ellipsoidal region, which is within a given region defined for this new dynamic. In the second structure, we adopted a technique without the use of integrators to define the strategies for the switched control and H_infinite switched control, for plants with and without control input saturation. In the third structure, we study a more general case, however, with the use of integrators to define the strategies for the switched control and H_infinite switched control, for plants without control input saturation. Although all proposed designs consider the auxiliary dynamics, it is assured the stability, decay rate proprieties, and H_infinite guaranteed cost for the original plant. Simulation examples and practical implementation illustrate the effectiveness of the proposed app... (Complete abstract click electronic access below)
Doutor
Alves, Uiliam Nelson Lendzion Tomaz. "Controle chaveado e chaveado suave de sistemas não lineares incertos via modelos fuzzy T-S". Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/152448.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O controle chaveado pode ser eficientemente utilizado no controle de sistemas fuzzy TakagiSugeno (T-S) incertos, que possuam funções de pertinência incertas e modelos locais conhecidos. Como estes sistemas fuzzy podem representar exatamente uma classe de sistemas não lineares incertos em uma região do espaço de estados, é interessante utilizá-los para descrever sistemas não lineares, usando no projeto do controlador o modelo fuzzy que descreve exatamente o sistema não linear. Porém, como a representação através de combinação convexa obtida é válida apenas em uma região do espaço de estados, garantias de que o estado do sistema permaneça nessa região devem ser obtidas. Neste trabalho são propostas condições que garantem a estabilização local, com a especificação da taxa decaimento, de uma classe de sistemas não lineares contínuos no tempo, incertos e com saturação no atuador, utilizando o controle chaveado. Os projetos dos controladores são realizados com base no modelo fuzzy T-S que representa exatamente o sistema não linear e os procedimentos de projeto fornecem uma região na qual as condições iniciais devam estar, tal que, o sistema não linear seja exatamente descrito pelo modelo fuzzy T-S incerto durante toda a trajetória de estado do sistema e ainda que esta trajetória permaneça dentro de uma região de operação previamente especificada. Em geral, o controle chaveado não possui restrição na frequência de chaveamento dos ganhos, o que pode levar ao chattering, que se manifesta pelo chaveamento em frequência infinitamente rápida dos ganhos de realimentação. Visando a eliminação do chattering no controle chaveado, propõe-se uma nova técnica de suavização do controle chaveado, o controle chaveado suave. Esta nova lei de controle pode ser utilizada nas mesmas condições do controle chaveado e é baseada no conceito do mínimo suave, definido neste trabalho. Além disso, são propostos procedimentos de projeto que consideram distúrbios para ambas as leis de controle chaveada e chaveada suave. Ademais, neste trabalho também se apresenta uma implementação da lei de controle chaveada em um sistema Ball Balancer fabricado pela Quanser.
The switched control can be efficiently used for controlling uncertain Takagi-Sugeno (T-S) fuzzy systems, which have uncertain membership functions and known local models. Because these fuzzy systems can exactly represent a class of uncertain nonlinear systems in a given operation region in the state space, it is interesting to use them to describe nonlinear systems, performing the controller design based on a T-S fuzzy model that exactly describes the nonlinear system. However, the perfect representation of the uncertain nonlinear system by the T-S fuzzy model as a convex combination is only valid in the operation region. Therefore, it is necessary to assure conditions such that the state of the system remains in that region. This work proposes conditions to ensure the local stabilization, with decay rate, of a class of uncertain continuoustime nonlinear systems with saturation on the actuator, using a switched control. The designs of the controllers are performed based on the T-S fuzzy model which exactly describes the nonlinear system and the design procedures provide a region in which the initial conditions must be such that the nonlinear system is exactly described by the uncertain T-S fuzzy model along the whole state trajectory of the system and this trajectory remains in a specified operation region. Usually, the switched control has no bound on the frequency of the feedback gains switching, and this can lead to chattering, which is manifested by infinitely fast frequency of the feedback gains switching. In order to avoid the chattering in the switched control, this work proposes a new technique to smooth the switched control, the smooth switched control. This new control law can be used under the same conditions as the switched control and it is based on the concept of smooth minimum, which is defined in this work. In addition, design procedures considering disturbances for both switched and smooth switched control laws are proposed. Furthermore, in this work it is also presented an implementation of the proposed switched control law in a Ball Balancer system manufactured by Quanser.
Soto, Marco Antonio. "Actuator saturation control of LPV systems and systems with rate and amplitude saturation". 2003. http://www.lib.ncsu.edu/theses/available/etd-03292003-120808/unrestricted/etd.pdf.
Pełny tekst źródła張光瓊. "Control of uncertain systems with saturating actuators". Thesis, 1993. http://ndltd.ncl.edu.tw/handle/96011929031996014104.
Pełny tekst źródłaChiou, Hsien-Huan, i 邱顯寰. "Control System Design with Saturating Actuator". Thesis, 1994. http://ndltd.ncl.edu.tw/handle/50777404400439981132.
Pełny tekst źródła國立成功大學
航空太空工程學系
82
Saturating actuator exists in the real-world control system. When the controller has relatively slow dynamics, such as integrator and long time constant poles, the limitation of the control energy due to a saturating actuator may result in serious performance degradations (e.g. large overshoot & long settlingtime) and even cause system instability.This dissertation deals with a two-step design method for the system with saturating actuators. In the first stage, a linear controller is designedwithout considering saturation effect, where H-inf,LQG/LTR or other design method can be applied. Then, in the second stage, an anti-windup controller has further been introduced to suppress the effect of the saturating actuators. This dissertation has focused on the second stage. In this dissertation, the stability of the saturating system and the anti-reset windup compensated system is discussed. Some anti-reset windup method are reviewed. The Park's anti-reset windup method is extended to discrete-time cases. Based on the anti-reset windup scheme introduced by Astrom, a systematic methodology to design an anti-reset windup compensator, called the filter compensating method, is proposed. This design method can be used to meet the design requirement by adjusting the weighting matrices, which ensures the compensated system to be totally stable and the effect of the saturating actuator can be reduced in a great amount. The effectiveness of the proposed compensation method are shown inthe illustrated example and the experiment.
"Multivariable control systems with saturating actuators : antireset windup strategies". Laboratory for Information and Decision Systems, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/2881.
Pełny tekst źródła林韋男. "Robust Stability for Uncertain Time Delay-Actuator Saturation with Delay-dependence". Thesis, 2009. http://ndltd.ncl.edu.tw/handle/52636752713716686939.
Pełny tekst źródła建國科技大學
電機工程系暨研究所
97
This paper aims to explore robust stability analysis of time delay system. Robust stability for time delay system has been attracting the attention of many researchers. Time delay is frequently encountered in various control systems, and the existence of the delay is a source of instability. Therefore, the stability problem of time delay systems has been one of the most popular research areas in control systems over the years. Time delay system is often occurring in the transmission of information or material between different parts of a system. Transportation systems, communication systems, chemical processing systems, and power systems are examples of time delay systems. In control system design, the limited power supply is the form of a saturating actuator in a practical system. In this thesis, one delay dependent robust stability criteria based on Lyapunov-Krasovskii functional combining with LMI approach has been developed and derived step by step. The proposed stabilization criteria is relatively simple to be checked by simulations and can be applied to the time delay systems with actuator saturation and perturbation. The given systems have been proven to be asymptotically stable.
Kao, Hui-Hsiang, i 高暉翔. "Wavelet-based Adaptive Backstepping Control for Uncertain Systems with Actuator Saturation". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/90372809582777520267.
Pełny tekst źródła國立臺灣師範大學
應用電子科技研究所
98
Three control methods for nonlinear systems are proposed in this study. The first controller design is about a wavelet adaptive backstepping controller for affine nonlinear systems. The controller is comprised of a wavelet identifier and actuator saturation. The second controller design is about a wavelet adaptive backstepping controller for nonaffine nonlinear systems. A wavelet adaptive backstepping controller for a nonaffine system is proposed in this paper. The control scheme combines the backstepping technique and adaptive control with wavelet function. The wavelet function has well performance. It is much proper to online compute the system dynamics by tuning its interior parameters. A mean-value estimation method is also proposed to avoid a higher-order derivative problem generated by Taylor linearization expansion.The third controller design is about a wavelet adaptive backstepping controller for nonaffine nonlinear systems with first order filters. Furthermore, the stability of the system with the mean-value theorem is dissected through Lyapunov functions. In the end, simulation results illustrate the application of the proposed scheme.
Suryendu, Chhavi. "Formation Control of Autonomous Underwater Vehicles under Communication Delay and Actuator Saturation". Thesis, 2020. http://ethesis.nitrkl.ac.in/10225/1/2020_PhD_CSuryendu_515EE6005_Formation.pdf.
Pełny tekst źródła"Design of feedback control systems for stable plants with saturating actuators". Laboratory for Information and Decision Systems, Massachusetts Institute of Technology], 1988. http://hdl.handle.net/1721.1/3051.
Pełny tekst źródłaCaption title.
Bibliography: p. 37-38.
Supported in part by the General Electric Corporate Research and Develoment Center. Supported in part by a grant from the NASA Ames and Langley Research Centers. NASA/NAG 2-297
"Design of feedback control systems for unstable plants with saturating actuators". Massachusetts Institute of Technology, Laboratory for Information and Decision Systems], 1988. http://hdl.handle.net/1721.1/3105.
Pełny tekst źródłaCover title.
Includes bibliographical references.
Support provided by the General Electric Corporate Research and Development Center. Support provided by the NASA Ames and Langley Research Centers. NAS/NAG 2-297
Obaiah, Maddela Chinna. "Wide-Area Damping Controllers for Power System with Time Delays and Actuator Saturation". Thesis, 2019. http://ethesis.nitrkl.ac.in/10038/1/2019_PhD__OMaddelaChinn_514EE1030_Wide.pdf.
Pełny tekst źródłaLin, Jia-Hong, i 林佳宏. "Decentralized Observer-Based Tracker for Analog Systems with Saturating Actuators and State Constraints". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/10085383618146056099.
Pełny tekst źródła國立成功大學
電機工程學系碩博士班
93
For a large-scale system, the decentralized control is an important concept. A cascaded system with actuator and state saturation which is consisting of a weighted switching strategy and an inner-loop compensator is presented in this paper. We apply the LQR design methodology for designing the observer-based tracker to simplify the complexity of the system. The realizable low-gain and high design performance of a sample-data controller is realized through the digital redesign method. For obtaining better performance of the tracker, we use the evolutionary programming to tune the parameters of the tracker. Some examples are presented to demonstrate the effects on the proposed methodology.
Liang, Hao-Jie, i 梁豪傑. "Fuzzy Controller Design for Takagi-Sugeno Fuzzy Model with Multiplicative Noises Subject to Actuator Saturation". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/95410581028998064521.
Pełny tekst źródła國立臺灣海洋大學
輪機工程系
98
Most physical systems in real world were suffered the external disturbance, then the fuzzy controller design for the nonlinear continuous-time systems with multiplicative noises and the nonlinear discrete-time systems with multiplicative noises. The Takagi-Sugeno (T-S) fuzzy model is employed to represent the nonlinear systems. The actuator saturation may severely degrade the performance of the closed-loop systems that the sufficient conditions are derived to guarantee the stability. The stability conditions developed in this thesis can be coordinated into the Linear Matrix Inequality (LMI) problems. By solving these LMI stability conditions, a Parallel Distributed Compensation (PDC) based fuzzy controller is obtained to stabilize the T-S fuzzy models with multiplicative noises. In order to illustrate the availability and practicability of proposed fuzzy controller design approach, two numerical simulations are provided to express the controlled responses of that dynamic ship positioning systems with multiplicative noises and truck-trailer systems with multiplicative noises.
Peng, Ying-Chuan, i 彭瀛全. "State-Space Self-Tuning Control for Singular Nonlinear Stochastic Hybrid Systems Containing Saturating Actuators". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/46753114497339895378.
Pełny tekst źródła國立成功大學
電機工程學系碩博士班
91
A state-space self-tuning control scheme for adaptive digital control of continuous-time singular nonlinear stochastic systems, which have unknown system parameters, measurement noises, deterministic noises, and inaccessible system states is first proposed in this thesis. The singular nonlinear system is mixed with chaos and singular system in unstable impulsive mode; therefore, it is more challenging for control. First, an adjustable auto-regressive moving average (ARMA)-based noise model with estimated states is constructed for state-space self-tuning control of singular nonlinear stochastic systems, then the optimal tracker is proposed. Under this proposed optimal tracker, the stability can also be shown for the hybrid system with the deterministic noise. Next, the conditioning dual-rate digital redesign scheme is developed, which contains a conditioning fast sampling rate digital controller for reducing the bump-transfer effects and a slow sampling rate digital redesign optimal tracker. Finally, a steady-state observer is based on some reasonable initial values for the system identification. As a result, it can be used to design an optimal tracker with saturation actuators. Illustrative examples are given to demonstrate the effectiveness of design methodologies.
Chien-Chang, Fang. "New Conditioning Dual-Rate Digital Redesign Scheme Based on GA for Chaotic Systems with Saturating Actuators". 2002. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0022-1409200710324280.
Pełny tekst źródłaFang, Chien-Chang, i 方建章. "New Conditioning Dual-Rate Digital Redesign Scheme Based on GA for Chaotic Systems with Saturating Actuators". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/22737827632217312534.
Pełny tekst źródła國立成功大學
電機工程學系碩博士班
90
This thesis addresses some basic ideas for the systems analysis and synthesis with input saturation. By utilizing the digital redesign based genetic algorithm (GA), the control systems can obtain well-performance for various input signals and constraints. The control object is to improve the performance without changing the existing structure. Then, the scheme is experienced that tracking a periodic orbit within a chaotic system. With the rapid advances in computers and microprocessors, the important idea is to replace some existing continuous controllers to associate with the digital implementation of digital signal processing chips.
Liu, Kuang-Ting, i 劉光庭. "An Observer-Based Tracker for Hybrid Interval Chaotic Systems with Saturating Actuators: The Choas-Evolutionary-Programming Apporach". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/44298203443640561695.
Pełny tekst źródła國立成功大學
電機工程學系碩博士班
92
A novel evolutionary-programming (EP) algorithm including chaotic variable named chaos-evolutionary-programming algorithm (CEPA) has been proposed in this thesis. Due to the nature of chaotic variable, i.e. pseudo-randomness, ergodicity and irregularity, the evolutional process of CEPA makes the individuals of subgenerations distributed ergodically in the defined space and circumvents the premature of the individuals of subgenerations. Then a dual-rate observer-based tracker for a hybrid interval chaotic system with saturating actuators by using the CEPA is developed. The CEPA can search many local minimum or maximum in parallel and thereby increasing the probability of finding the global one. An illustrative example is presented to demonstrate the effectiveness of the proposed algorithm.
Shih, Ying-Jie, i 施英傑. "Fuzzy Controller Design for Stochastic Takagi-Sugeno Fuzzy Model with External Disturbance Subject to Actuator Saturation and H-Infinity Performance Constraints". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/25458069893339163088.
Pełny tekst źródła國立臺灣海洋大學
輪機工程學系
102
In this thesis, a H-Infinity performance constrained fuzzy control approach is investigated for a class of nonlinear stochastic systems subject to actuator saturation. The nonlinear stochastic systems considered in this thesis are represented by Takagi-Sugeno fuzzy models with multiplicative noises. According to H-Infinity performance constraint and actuator saturation, it is shown that the stabilization of multiplicative noised Takagi-Sugeno fuzzy models can be formulated as a convex optimizationproblem subject to linear matrix inequalities. The proposed fuzzy control method is accomplished based on the Lyapunov stability theory Simulation study on a continuous-time nonlinear stochastic ship steering system is given to show the performances of the proposed H-Infinity performance constrained fuzzy control methodology. Keywords: Takagi-Sugeno Fuzzy Models, Multiplicative Noises, Actuator Saturation and Performance Constraint.