Дисертації з теми "Proportional Integral Resonant controller"
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Chopra, Shubham. "Evolved Design of a Nonlinear Proportional Integral Derivative (NPID) Controller." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/512.
Повний текст джерелаChin, Hui Hui. "ALL DIGITAL DESIGN AND IMPLEMENTAION OF PROPORTIONAL-INTEGRAL-DERIVATIVE (PID) CONTROLLER." UKnowledge, 2006. http://uknowledge.uky.edu/gradschool_theses/272.
Повний текст джерелаMcCluskey, Emmet Gerard. "Rule-based automatic PID controller tuning." Thesis, Queen's University Belfast, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335433.
Повний текст джерелаBhambhani, Varsha. "Optimal Fractional Order Proportional And Integral Controller For Processes With Random Time Delays." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/246.
Повний текст джерелаCong, Jun. "Enhancing TCP traffic flow performance with a proportional and integral rate controller: Theory, design, and performance evaluation." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26615.
Повний текст джерелаGogoi, Manoj. "Proportional-Integral-Derivative (PID) controller design for robust stability of arbitrary order plants with time-delay and additive uncertainty." Thesis, Wichita State University, 2010. http://hdl.handle.net/10057/3478.
Повний текст джерелаThesis (M.S.)--Wichita State University, College of Engineering, Dept. of Electrical Engineering and Computer Science.
Samaranayake, Lilantha. "Distributed control of electric drives via Ehernet." Licentiate thesis, KTH, Electrical Systems, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1656.
Повний текст джерелаThis report presents the work carried out aiming towardsdistributed control of electric drives through a networkcommunication medium with temporal constraints, i.e, Ethernet.A general analysis on time delayed systems is carried out,using state space representation of systems in the discretetime domain. The effect of input time delays is identified andis used in the preceding controller designs. The main hardwareapplication focused in this study is a Brushless DC servomotor, whose speed control loop is closed via a 10 MbpsSwitched Ethernet network. The speed control loop, which isapproximately a decade slower than the current control loop, isopened and interfaced to the network at the sensor/actuatornode. It is closed at the speed controller end at another nodein the same local area network (LAN) forming a distributedcontrol system (DCS).
The Proportional Integral (PI) classical controller designtechnique with ample changes in parameter tuning suitable fortime delayed systems is used. Then the standard Smith Predictoris tested, modified with the algebraic design techniqueCoefficient Diagram Method (CDM), which increases the systemdegrees of freedom. Constant control delay is assumed in thelatter designs despite the slight stochastic nature in thetiming data observations. Hence the poor transient performanceof the system is the price for the robustness inherited to thespeed controllers at the design stage. The controllability andobservability of the DCS may be lost, depending on the range inwhich the control delay is varying. However a state feedbackcontroller deploying on-line delay data, obtained by means ofsynchronizing the sensor node and controller node systemclocks, results in an effective compensation scheme for thenetwork induced delays. Hence the full state feedbackcontroller makes he distributed system transient performanceacceptable for servo applications with the help of poleplacement controller design.
Further, speed synchronizing controllers have been designedsuch that a speed fluctuation caused by a mechanical loadtorque disturbance on one motor is followed effectively by anyother specified motor in the distributed control network with aminimum tracking or synchronizing error. This type ofperformance is often demanded in many industrial applicationssuch as printing, paper, bagging, pick and place and materialcutting.
Keywords:Brushless DC Motor, Control Delay, DistributedMotion Control Systems, Proportional Integral Controller, SmithPredictor, Speed Synchronization, State Feedback Controller,Stochastic Systems, Switched-Ethernet, Synchronizing Error,Time Delayed Systems, Tracking Error
Park, Sung Yeul. "A Wide Range and Precise Active and Reactive Power Flow Controller for Fuel Cell Power Conditioning Systems." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28645.
Повний текст джерелаPh. D.
Selby, Normajean. "STATE-VARIABLE FEEDBACK CONTROL OF A MAGNETICALLY SUSPENDED CENTRIFUGAL BLOOD PUMP." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1185567515.
Повний текст джерелаJebelli, Ali. "Design of an Autonomous Underwater Vehicle with Vision Capabilities." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/35358.
Повний текст джерелаJowkar, Saeid. "The Application of Programmable Logic Controller (PLC) to Control Temperature in Cold-room Based on TIA PORTAL Software." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Знайти повний текст джерелаHolgersson, Anton, and Johan Gustafsson. "Trajectory Tracking for Automated Guided Vehicle." Thesis, Linköpings universitet, Reglerteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176423.
Повний текст джерелаCatata, Elmer Osman Hancco. "Controlador PI FUZZY aplicado ao controle direto de potência do gerador de relutância variável de 12/8 conectado à rede elétrica." reponame:Repositório Institucional da UFABC, 2016.
Знайти повний текст джерелаDissertação (mestrado) - Universidade Federal do ABC, Programa de Pós-Graduação em Engenharia Elétrica, 2016.
Este trabalho apresenta o controle direto de potencia do gerador de relutancia variavel de 12/8 utilizando o controlador fuzzy PI auto-ajustavel e o controle vetorial do inversor conectado à rede eletrica. Inicialmente são estudados os principios de operação da maquina e a topologia do conversor eletronico de potencia que sera utilizado para aciona-lo. Usando o software de simulaçãoMatlab/Simulink é implementado o modelo da maquina de relutancia variavel utilizando as curvas caracteristicas, de corrente e torque, que foram extraídas utilizando dados experimentais. Utilizando o modelo da maquina é projetado o controlador de velocidade para sua operação no modo motor. Tambem sera projetado o controlador de potência PI utilizando o modelo estimado do sistema de conversão de energia eólica. A partir dos ganhos do controlador PI é projetado o controlador fuzzy PI autoajustavel com o objetivo de melhorar a resposta em regime permanente da potencia controlada. A potencia gerada pelo gerador de relutancia variavel é injetada à rede eletrica, atraves do controle independente das potencias ativa e reativa, para este proposito é utilizado um conversor trifasico de dois níveis. Na parte experimental deste trabalho foi implementado o controle de corrente por histerese para maquina operando no modo motor, posteriormente foi implementado o controle de corrente e controle da tens~ao no barramento CC para a máquina operando no modo gerador. Os resultados de simulação e experimentais se mostraram coerentes validando os controladores propostos.
This work presents the direct power control of the switched reluctance generator of 12/8 using the self-tuning fuzzy PI controller and the vector control for inverter connected to the grid. Initially, the machine's operating principles and the topology of the power electronics converter used to drive this machine are studied. The model of switched reluctance machine is implemented in Matlab/Simulink simulation software using the characteristic curves of current and torque extracted using experimental data. Using the machine's model, It is designed the speed controller for its operation in motor mode. Also, the PI controller is designed for the power control loop based on the estimation of the wind energy conversion system. Using the gains of the PI controller, It is designed the self-tuning fuzzy PI controller, in order to improve the steady state response of the power control loop. The power generated by the switched reluctance generator is injected into the power grid through the independent control of active and reactive power, for this purpose is used a three-phase two level converter. In the experimental part of this work was implemented the hysteresis current control for machine operating in motor mode, also, It was implemented the current and DC bus voltage control for the machine operating in generator mode. The simulation and experimental results were proved consistent and these results validate the proposed controllers.
Enbiya, Saleh A. "Automatic Control Strategies of Mean Arterial Pressure and Cardiac Output. MIMO controllers, PID, internal model control, adaptive model reference, and neural nets are developed to regulate mean arterial pressure and cardiac output using the drugs sodium Nitroprusside and dopamine." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/13421.
Повний текст джерелаLibyan Ministry of Higher Education scholarship
Enbiya, Saleh Abdalla. "Automatic control strategies of mean arterial pressure and cardiac output : MIMO controllers, PID, internal model control, adaptive model reference, and neural nets are developed to regulate mean arterial pressure and cardiac output using the drugs Sodium Nitroprusside and Dopamine." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/13421.
Повний текст джерелаBraga, Mateus Freitas. "Projeto e simulação de um filtro híbrido monofásico para correção do fator de potência e compensação harmônica em uma rede industrial." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/5361.
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Cresce a cada dia o n úmero de cargas não lineares conectadas aos diversos sistemas el étricos, seja em ní vel de transmissão ou distribui ção. Como consequência desse crescimento, e possí vel encontrar casos de consumidores enfrentando problemas relacionados a desarmes de disjuntores e sobreaquecimento de condutores, entre outros efeitos indesejados. Tomando um desses casos como base para este estudo, esta disserta ção tem o objetivo de avaliar e propor uma solu ção para uma rede monof asica real, que possivelmente e comum a outros consumidores. A carga monof ásica composta por lumin árias a LED (t picas cargas não lineares) e cargas indutivas se apresenta aos terminais da fonte com um comportamento de elevado conte udo harmônico (THD) de corrente e baixo fator de potência. Essa condi ção adversa pode ser mitigada de diversas maneiras, como por exemplo pela a ção de um fi ltro passivo,fi ltro ativo ou ainda fi ltro h brido (o qual e composto por uma combina ção dos dois primeiros). Ser a proposto nesta disserta ção uma metodologia de projeto relacionada a aplica ção de um fi ltro hi brido monof ásico visando corrigir o fator de potência e reduzir o conte udo harmônico de corrente presente na fonte, tomando como base as caracterí sticas do sistema avaliado em uma ind ústria gr áfi ca t ípica. Serão investigadas algumas con gura ções de filtros com o objetivo de mitigar problemas de Qualidade de Energia El étrica. Como consequência, ser a desenvolvida a an álise matem atica da topologia adotada e o projeto do controlador, baseado em um controlador proporcional-ressonante e na Teoria p-q Monof asica. A veri ca ção da solu ção proposta e sustentada pelos resultados de simula ção obtidos via software PSIM.
The amount of non-linear loads connected to the various electrical systems grows on a daily basis, regardless those loads are tied to a transmission or distribution bar. As a consequence of this growth, it is possible to nd cases of consumers facing problems such as tripping of breakers and cables overheating, among other undesired e ects. Taking one of these cases as the focus of this study, this dissertation aims to evaluate and propose a solution to a real single-phase system, which could be considered similar to other consumers. The single-phase load composed of LED luminaires (typical non-linear load) and inductive loads presents high THD and low power factor behavior at source terminals. This condition can be mitigated by using some well-known techniques, such as passive lters, active lters or hybrid lters, (which are composed by the combination of the former two). This Master document Thesis proposes a design methodology of a single-phase hybrid lter aiming power factor correction and reduction of the harmonic content of the current delivered by the AC power supply when feeding a typical printing factory. It will be reviewed and discussed some possible lter con gurations aimed to solve the case under evaluation. It is also included the mathematical analysis of the proposed topology, along with the design of the control system of the inverter. The Single-Phase p-q Theory is reviewed in order to design the control. The closed-loop control is desinged by a proportional-resonant compensator. Simulation results, by employing the PSIM software, are provided aiming to validate the solution proposed.
Chaves, Eric Nery. "Otimização meta heurística e controle baseado no modelo interno aplicados em sistemas de geração fotovoltaica conectados à rede elétrica monofásica." Universidade Federal de Uberlândia, 2016. https://repositorio.ufu.br/handle/123456789/17965.
Повний текст джерелаEste trabalho apresenta o estudo, desenvolvimento e aplicação de novas técnicas de controle aos sistemas de geração de energia fotovoltaica, conectados à rede elétrica monofásica, visando a melhoria da eficiência destes sistemas em relação aos métodos de controle tipicamente utilizados. O trabalho é dividido em duas partes principais, as quais estão relacionadas ao rastreamento do ponto de máxima potência (Maximum Power Point Tracking – MPPT) e, depois, ao controlador interno dos conversores boost-quadrático – lado dos painéis fotovoltaicos – assim como aos controladores do inversor de tensão, no lado da rede elétrica monofásica. A primeira parte do trabalho consiste no desenvolvimento de um algoritmo de meta heurística para o MPPT, o qual é baseado no método do recozimento simulado (Simulated Annealing - SA) e tem como objetivo a determinação do ponto de máximo global, buscando soluções fora de uma vizinhança próxima, de modo a evitar o atracamento em máximos locais da curva de potência de saída do arranjo de painéis fotovoltaicos, melhorando, assim, o aproveitamento da energia em situações de sombreamento parcial. A segunda parte do trabalho apresenta o projeto de controladores baseados no modelo interno (Internal Model Control – IMC) com 1 grau de liberdade (1 Degree of Freedom – 1 DOF) aplicados, primeiramente, ao conversor CC-CC Boost Quadrático, utilizado para o MPPT, e, posteriormente, a um inversor de tensão com filtro LCL, conectado à rede elétrica monofásica, operando no modo de injeção de corrente. É apresentada a modelagem matemática de ambos os conversores e analisada a compensação da realimentação interna ao sistema do inversor de tensão, correspondente ao desacoplamento da tensão da rede, através da estratégia de alimentação à frente (Feedforward). Visando-se uma base de comparação, para a análise de desempenho do conversor IMC – 1DOF, também é aplicado ao sistema de injeção de corrente, o controlador Proporcional-Ressonante (P+Res). São apresentados resultados de simulação computacional e experimentais de ambos os 8 controladores, os quais permitem verificar o desempenho do sistema em situação de rede fraca e carga local não-linear.
This paper presents the study, development and application of new control techniques for photovoltaic power generation systems, connected to single-phase power grid in order to improve the efficiency of these systems in relation to control methods typically used. The work is divided into two main parts, which are related to tracking the maximum power point (Maximum Power Point Tracking - MPPT) and then the internal controller of boost quadratic converters - side of the photovoltaic panels - as well as the controllers the voltage inverter, the side of the single-phase mains. The first part of the work is the development of a heuristic goal algorithm for MPPT, which is based on the method of simulated annealing (Simulated Annealing - SA) and aims at determining the overall maximum point, seeking out solutions in a close vicinity, so as to prevent the docking local maxima in the curve of power output of the photovoltaic array, thereby improving the utilization of energy in partial shading situations. The second part presents the design of controllers based on internal model (Internal Model Control - IMC) with 1 degree of freedom (1 Degree of Freedom - 1 DOF) applied, first, the DC-DC Boost Quadratic converter, used for MPPT, and thereafter, a voltage inverter with LCL filter connected to the single phase power supply operating in current injection mode. A mathematical modeling of both converters and analyzed the compensation of internal feedback to the voltage inverter system corresponding to the disconnection of the mains voltage through the power strategy a head (feedforward). A basis of comparison for the performance analysis of IMC-1DOF converter is aiming at, is also applied to the current injection system, Proportional-Resonant Controller (P + Res). They are presented computer simulation and experimental results of both controllers, which allow you to check the system performance in low and non-linear local load network situation.
Tese (Doutorado)
Benigno, Tayara Crystina Pereira. "Modelagem matemática e controle de atitude e posição do quadrotor." Universidade Federal Rural do Semi-Árido, 2015. http://bdtd.ufersa.edu.br:80/tede/handle/tede/538.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
With advances in technology and the popularization of the use of Unmanned Aerial Vehicles (UAV's) so does the need to use more robust and more effective control techniques. Among the various types of unmanned aerial vehicles, this paper will focus on quadrotor model, which has a mechanical structure in the form of x, whose ends have an engine and propeller assembly, where the rotation of this group is responsible for the lift and the movements developed by quadrotor. This feeling, aiming to apply drivers that provide stability to the dynamic system. This study aims to conduct mathematical modeling using the Euler-Lagrange. With this, it is proposed a PID controller (Proportional Integral Derivative) to maintain stable the three orientation angles and height to a desired value. The development of the proposed controller will be validated via simulation confirming the application feasibility of the technique presented stability
Com o avanço tecnológico e a popularização do uso dos Veículos Aéreos Não Tripulados (VANT s) cresce também a necessidade do uso de técnicas de controle mais robustas e mais eficazes. Dentre os mais diversos tipos de veículos aéreos não tripulados, este trabalho irá focar no modelo do quadrotor, que possui uma estrutura mecânica em forma de cruz, cujas extremidades têm um conjunto de motor e hélice, onde a rotação desse conjunto é responsável pela força de sustentação e pelos movimentos desenvolvidos pelo mesmo. Objetivando aplicar controladores que proporcione estabilidade ao sistema dinâmico deste veiculo aéreo. O presente trabalho tem como objetivo realizar a modelagem matemática deste sistema usando as equações de Euler-Lagrange. Tendo isso, é proposto um controlador PID (Proporcional Integral Derivativo) para manter os três ângulos de orientação estáveis e a altura em um valor desejado. O desenvolvimento do controlador proposto será validado via simulação confirmando a viabilidade da aplicação da técnica de estabilidade apresentada
Jebelli, Ali. "Development of Sensors and Microcontrollers for Underwater Robots." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31283.
Повний текст джерелаCordero, Bautista Luis Gustavo. "Aplicação do algoritmo genético adaptativo com hipermutação no ajuste dos parâmetros dos controladores suplementares e dispositivo FACTS IPFC /." Ilha Solteira, 2019. http://hdl.handle.net/11449/182292.
Повний текст джерелаResumo: As perturbações ou variações de carga produzem oscilações eletromecânicas que devem ser amortecidas o mais rápido possível para garantir confiabilidade e estabilidade da rede. Neste trabalho apresenta-se uma análise do dispositivo FACTS Interline Power Flow Controller (IPFC) e o controlador Proporcional Integral (PI) no gerenciamento dos fluxos de potência e a influência dos Estabilizadores do Sistema de Potência (ESP) e do IPFC Power Oscillation Damping (POD) sobre a estabilidade do sistema elétrico de potência. Neste trabalho enfoca-se nos estudos de estabilidade a pequenas perturbações usando um Algoritmo Genético Adaptativo com Hiper-mutação (AGAH) para ajustar os parâmetros dos controladores suplementares de amortecimento, o Estabilizador de sistema de potência (ESPs) e o Power Oscillation Damping (POD) em forma coordenada. O AGAH tem como objetivo encontrar os parâmetros ótimos do controlador para melhorar o amortecimento fraco das oscilações de baixa frequência locais e inter-área. Neste trabalho representa-se o sistema de elétrico de potência com a inclusão do dispositivo Interline Power Flow Controller com o modelo de sensibilidade de corrente (MSC). Considera-se como sistema teste o sistema Simétrico de Duas Áreas e o sistema New England como o intuito de avaliar o algoritmo proposto. As simulações são feitas no ambiente do MatLab. Por fim, apresenta-se a comparação do algoritmo genético com o desempenho do algoritmo proposto.
Abstract: Small-magnitude disturbances happen to produce electro-mechanical oscillations which should be damped as quickly as possible to ensure reliability and stability of the network. This work presents an analysis of Interline Power Flow Controller (IPFC) FACTS device and PI controller to control and manage power flow and also how Power System Stabilizers and IPFC Power Oscillations Damping (POD) controller influence over an electric power system stability. This work focuses on small-signal stability studies using an Adaptive Genetic Algorithm with Hyper-mutation (AGAH) in order to tune controller parameters in a coordinated way ensuring proper damping. AGAH aims to find optimal controller parameters to enhance the poor damping of local and inter-area low frequency oscillations. This works represents the electric power system and Interline Power Flow Controller device by a current sensitivity model (CSM). This paper considers two areas 14 bus symmetrical power system and New England power system in order to assess proposed algorithm. Coding and Simulations take place in MatLab platform. AGAH and GA get compared by time convergence and performance. This paper shows AGAH is an interesting optimization technique which outweighs GA.
Mestre
Sola, Yoann. "Contributions to the development of deep reinforcement learning-based controllers for AUV." Thesis, Brest, École nationale supérieure de techniques avancées Bretagne, 2021. http://www.theses.fr/2021ENTA0015.
Повний текст джерелаThe marine environment is a very hostile setting for robotics. It is strongly unstructured, very uncertain and includes a lot of external disturbances which cannot be easily predicted or modelled. In this work, we will try to control an autonomous underwater vehicle (AUV) in order to perform a waypoint tracking task, using a machine learning-based controller. Machine learning allowed to make impressive progress in a lot of different domain in the recent years, and the subfield of deep reinforcement learning managed to design several algorithms very suitable for the continuous control of dynamical systems. We chose to implement the Soft Actor-Critic (SAC) algorithm, an entropy-regularized deep reinforcement learning algorithm allowing to fulfill a learning task and to encourage the exploration of the environment simultaneously. We compared a SAC-based controller with a Proportional-Integral-Derivative (PID) controller on a waypoint tracking task and using specific performance metrics. All the tests were performed in simulation thanks to the use of the UUV Simulator. We decided to apply these two controllers to the RexROV 2, a six degrees of freedom cube-shaped remotely operated underwater vehicle (ROV) converted in an AUV. Thanks to these tests, we managed to propose several interesting contributions such as making the SAC achieve an end-to-end control of the AUV, outperforming the PID controller in terms of energy saving, and reducing the amount of information needed by the SAC algorithm. Moreover we propose a methodology for the training of deep reinforcement learning algorithms on control tasks, as well as a discussion about the absence of guidance algorithms for our end-to-end AUV controller
Dam, Shimul Kumar. "Power Electronic Converters for Condition Monitoring and Voltage Equalization of Batteries." Thesis, 2019. https://etd.iisc.ac.in/handle/2005/4534.
Повний текст джерелаLee, Ping-Hui, and 李炳輝. "Using Grey Proportional Integral Controller forPrecision Time Synchronization Protocol." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/17532358044805043883.
Повний текст джерела國立臺灣大學
電機工程學研究所
96
IEEE1588 standard is a precision time synchronization protocol (PTP). It is designed to synchronize real-time clocks in the nodes of a distributed system that communicate using a network. Within a subnet, the PTP system is expected to achieve the synchronization accuracy in sub-microsecond range. Thus, it is applicable to traditional measurement and control systems, industrial automation systems, communication systems, electrical power systems and many other areas of modern technology.The unit of clock servo plays important roles in the PTP system. It is usually implemented by proportional integral (PI) controller. The time offsets between the master and the slave clock are fed into the PI controller. The output of the PI controller is used to steer the slave clock to synchronize with the master clock. Therefore, the relative tick-rate of the slave clock can be stabilized. In order to improve the performance of the PI controller, this study adopts the gray theory to determine the parameter of the proportional term of the PI controller. The drift of the time offset from master clock can be obtained by using the gray prediction algorithm. Accordingly, the gray PI controller makes the system reduce the time to reach steady state. To assess the performance of the system, this study integrates the PTP software and the network interface with timestamper to establish a subnet. For the stability analysis of the system under tests, this paper utilizes the ITU-T recommended Allan deviation. Experimental results show that the performance of the gray PI controller is better than the traditional one. The transient response time of the system is significantly reduced by introducing the proposed gray PI controller.
Li, Huang-Yi, and 李皇儀. "Applied Particle Swarm Optimization Algorithms to Parameters Tuning of Digital Proportional - Integral Controller." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/30502467646046001582.
Повний текст джерела龍華科技大學
工程技術研究所
99
PID controller can be divided into traditional PID and digital PID. The latter is consisted in the time series form. In this paper, applied Particle Swarm Optimization algorithm to parameters tuning of the digital PI controller, and compared with the Weighting Ziegler – Nichols (Z-N) algorithm. Particle Swarm Optimization algorithm uses a continuous iterative method to optimize, as genetic algorithm. Particle Swarm Optimization only processes the optimal solution and refreshing formula. It is easier than those steps of genetic algorithm. So, in the reasonable searching range, the speed of searching optimal solution of Particle Swarm Optimization algorithm is more quick than that of genetic algorithm. The paper uses permanent magnet synchronous motor as a controlled plant. The simulation program uses Matlab software. Simulation results confirm that the Particle Swarm Optimization applied to parameters tuning of the digital PI controller is better than weighted Z-N PI controller.
Liao, Kuo-Yuan, and 廖國淵. "Design of a Single-Phase Inverter using Trapezoidal Integration-Based Proportional Integral Derivative Controller." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/2vsau7.
Повний текст джерела義守大學
電機工程學系
103
Traditional PID (proportional-integral-derivative) controllers have been broadly applied to single-phase inverters due to their simple structures and easy designs. Yet, the integral term of traditional PID controllers is based on rectangular integration. If the load of the inverter is highly non-linear, the precision of calculations will be low, and there will be steady-state errors. This thesis proposed a PID controller based on trapezoidal integration. Unlike rectangular integration, trapezoidal integration does not underestimate the error area, which can further result in calculation errors. Thus, the proposed single-phase inverter can achieve low total harmonic distortion (THD) output voltage and fast dynamic response. The problem with inverters using traditional PID controller of possible tracking errors in cases with highly non-linear loads can be resolved. To verify the effectiveness of the proposed controller, this thesis used the software MATLAB to run simulations. And the results showed that the AC output voltage of the proposed single-phase inverter is of high quality in any case with resistive load, step load change, or non-linear load.
Chen, Chih-Hao, and 陳志豪. "Dynamically Adjusted Proportional-Integral Technology in Servo Speed Mode for Roll-to-Roll Controller." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/72102580678738095726.
Повний текст джерела逢甲大學
資訊電機工程碩士在職專班
104
In this study, the application of the R2R (roll to roll) tension control of the speed, capability and stability is proposed. The system is based on proportional - integral compensation control the servo motor speed to obtainfixed speed and tension. In the control system architecture, consists of unwinding system, fixed speed system, and winding system. Systems begin with plastic bag lamination off axis tension, each independent tension detection device can individually feedback. In addition to fixed speed systems, winding and rewinding system because there are roll diameter changes, so roll diameter calculation can be applied to obtain the line speed. Tension detection and feedback units use a proportional - integral servo motor speed adjustment of the system to get a high stability of tension and speed control. Traditional control method is via the AD / DA module feedback tension value changes with severally servo motor torque control mode to reach a certain tension. This study proposed proportional - integral pre-integrated system to compensate servo motor speed and precise diameter calculation to obtain higher and more precise control accuracy and stability.
Jheng, Hao-Yi, and 鄭浩逸. "An Adaptive Proportional-Integral Controller for Power Management of 3D Graphics System-On-Chip." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/aw3jbr.
Повний текст джерела國立中山大學
資訊工程學系研究所
97
In the past few years, due to the rapid advance in technology and the aid of 3D graphics applications the world of 3D graphics is rapidly expanding from desktop computers and dedicated gaming consoled to handheld devices, such as cellular phones, PDAs, laptops etc.,. However, unlike traditional desktop computers and gaming consoles, mobile computing devices typically have slower processors that have less capability for handling large computation-intensive workloads like 3D graphics application. In addition, the power consumption is one of the major design specifications to realize the 3D graphics accelerating engine for mobile devices because handheld batteries have limited lifetimes. Moreover, the size of chip is depend on the Moore’s Law: The number of transistors in a chip are double in every eighteen months. Even though the produce cost is decrease, but the capacity of battery cannot increase like the transistors. Therefore, how to reduce power consumption by using efficient power management techniques has become a very important research topic in 3D graphics SoC design. For 3D graphics applications, dynamic voltage and frequency scaling (DVFS) is a good candidate to reduce the power consumption of 3D graphics accelerating engine. So many relative papers have researched in how to accurately predict the workload and scale the voltage and frequency. The prediction policy can divide into History-based predictor [1] and Frame-structure predictor [2-4]. The History-based predictor predicts the latter frame workload by previous frame workload to scale the voltage, and the frame-structure predictor performs offline and then determine the different kind of frame for an application. A table is used to save the mapping of different kind of frame to the voltage, and then the voltage is scaled according to the mapping table. A lot of researchers put the power management policy in software i.e. processors, but our proposed workload prediction scheme has been realized into the hardware circuit. Therefore, it can not only reduce the overhead of processor but also quickly adjust the voltage and frequency of 3D graphics accelerating engine. Our prediction policy is one of the History-based predictor ,and it is an adaptive PID predictor [5-6] in which the parameters of Proportional controller and Integral controller can be adaptively adjusted so that it can obtain more accurate prediction results than non-adaptive predictor. In general, the workload that the selected voltage can handle is usually over than the predicted workload. That is, actual workload is usually less than predicted workload. So that the slack time will be generated. We can utilize the slack time through Inter-frame compensation [7-10] to save more energy while maintaining the similar output quality. We use a simple policy to adaptively select the parameters for compensation between the frames to simplify the hardware architecture of the power management policy. Experimental results show that, we can get more energy saving and more accurate workload prediction when the adaptive PI predictor and adaptive Inter-frame compensation are utilized.
Chuang, Chih-Hsien, and 莊志賢. "Design of Proportional Integral Derivative Controller with Feedforward Control and Dead Zone for PWM Inverters." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/s59srs.
Повний текст джерела義守大學
電機工程學系
103
Traditional proportional-integral-derivative (PID) controllers have been broadly applied to pulse-width modulation (PWM) inverters due to their simple structures and easy designs. However, traditional PID controllers are sensitive to parameter changes and load interferences. This fact may result in high total harmonic distortion (THD) and slow dynamic response in cases with an inverter of highly non-linear load. Thus, this thesis proposes a (PID) controllers with feedforward control and dead zone. With the dead zone PID controller, the sensitivity to large parameter changes and highly non-linear load can be reduced. And the feedforward control can enhance dynamic response, that in cases with an inverter of highly non-linear load, there can be low THD and fast dynamic response. To verify the effectiveness of the proposed controller, this thesis used the software MATLAB to run simulations. And the results showed that the proposed inverter can achieve low THD and fast dynamic response in cases with non-linear load.
Nkwanyana, Thamsanqa Bongani. "Multi-input multi-output proportional integral derivative controller tuning based on improved particle swarm optimization." Diss., 2021. http://hdl.handle.net/10500/27692.
Повний текст джерелаElectrical and Mining Engineering
M. Tech. (Electrical Engineering)
徐德君. "Fuzzy Proportional-Integral Control on Automatic Gain Controller Design for the Wireless Local Area Networks." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/30337529838349966052.
Повний текст джерела國立中興大學
電機工程學系
91
This thesis aims at the automatic gain controller (AGC) design for a IEEE 802.11b baseband processor receiver. We propose Fuzzy PI control strategy to regulate the amplitude of the input signal to the baseband A/D converter. The operational delay and the system convergence are analyzed through a software package Synopsys and FPGA emulators Altera FLEX10K50E. Robustness and fault tolerance are verified through experimental results.
Zhan, Xun Xain, and 詹勳賢. "A Hybrid Particle Swarm Optimization / Proportional Integral controller for the Low Earth Orbit Satellite Tracking System." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/36628114084058869344.
Повний текст джерела國立高雄應用科技大學
電子工程系碩士班
101
The purpose of this thesis is to develop an intelligent algorithm of control system to track low-orbit satellites. Satellite tracking methods rely on SGP4 orbit forecasting model generated by the antenna pointing database and follow the point coordinates to command the rotation of the axes. Gears rotation gap will affect the strength of the received signal. The PI controller can adjust the error values caused by the drive shaft mechanism. Particle swarm optimization has fewer parameter settings and the advantages of fast convergence used for parameter optimization and variable selection. And particle swarm optimization algorithm can be used to search for the PI controller parameters, k_p and k_i. In the search process using resolver feedback mechanism of actual angle indicator as a basis to judge the fitness value of pros and cons. The experimental results demonstrate the reliability of proposed system and the function of program track mode.
Lin, Yenku, and 林彥谷. "Design and Implementation of Modified Proportional Integral Derivative Controller with Differential Forward for DC-AC Inverters." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/56116073130236878859.
Повний текст джерела義守大學
電機工程學系
101
Due to simple structure and good dynamic property, Differential forward PID (DFPID) controller is widely used in DC-AC inverters control. However, the conventional DFPID controller is difficult to inhibit the disturbance of output signal, thus causing the deterioration of the inverter performance. In order to inhibit the disturbance of output signal and enhance the system robustness, a modified differential forward PID (MDFPID) controller for the DC-AC inverter design is proposed in this thesis. The performances of the DC-AC output are low total harmonic distortion, and fast dynamic response under linear and non-linear loading. In addition to retaining the advantages of simple structure and good dynamic property as the conventional DFPID controller, the MDFPID controller has also allowed easy adjustment of control parameters and significant inhibition of disturbance of output signal. To verify the effectiveness of this proposed controller, the Psim software is used to simulate the inverter and the experiment is also realized with digital signal processor. Finally, a high-quality AC output voltage can be obtained under non-linear loading.
Chang, Chin-Ping, and 張進評. "DESIGN OF A HYBRID FUZZY LOGIC PROPORTIONAL PLUS INTEGRAL-DERIVATIVE CONTROLLER FOR A CLASS OF NONLINEAR SYSTEMS." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/02072317454608048046.
Повний текст джерела大同大學
電機工程學系(所)
93
In this thesis, we used PID-type controller as the foundation, to develop a hybrid fuzzy logic proportional term plus conventional integral and derivative terms (FUZZY P+ID) controller for improving the control response. This kind of controller is constructed by using an incremental fuzzy logic controller in place of the proportional term in the conventional PID controller. This thesis basic principle of this study is to reduce the parameters of a fuzzy controller to be tuned so that, in comparison with the PID-type controller, only one additional parameter should be adjusted. Using conventional PID controller, however, it is difficult to achieve a desired tracking control performance since the dynamic equations of a plant for the manipulator are tightly coupled, highly nonlinear and uncertain. In order to improve the tracking control performance under uncertainty, we propose a new hybrid control scheme for the nonlinear plants, which consists of a fuzzy logic proportional controller and a conventional integral and derivative controller (FUZZY P+ID). Finally, detailed numerical design processes and simulation results are performed to illustrate the effectiveness of the proposed scheme.
Wang, Hung-Kai, and 王宏鍇. "A Dynamic Adjusted Proportional-Integral Controller for Semiconductor Manufacturing and an Empirical Study of Critical Dimension and Overlay Errors." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/64556414674496491360.
Повний текст джерела國立清華大學
工業工程與工程管理學系
98
Semiconductor industry and its products change fast with time. There are about 300 to 500 processes in semiconductor manufacturing, and there are many factors affecting each process. Therefore, it is hard to estimate the input-output model for one process, and also hard to estimate the process disturbance distribution or model. However, in most of fabs in semiconductor industry, they use EWMA controller to control the process, which cannot adjust the control parameter with process disturbance. This research considers the situation that it is hard to estimate the process disturbance model, and propose a framework for the Dynamic Adjusted Proportional-Integral (DAPI) controller. By adjusting the control parameters lot by lot, we can effectively solve the problems mentioned above. And we will illustrate an empirical study of critical dimension control and overlay errors reduction of photolithography, both consider the time series disturbance model and real process disturbance. We will compare the output result with traditional EWMA (Exponentially Weighted Moving Average) controller, and show that DAPI controller can make the process closer to target and reduce the process output variance than EWMA controller. In addition, in real semiconductor manufacturing situation, there exists process sudden Shift and metrology Delay problems, which make the controller performs worse. Since DAPI controller adjusts input value slowly, it will not be affect by process sudden Shift. We will show that DAPI controller can solve those problems, and can be used to a real semiconductor manufacturing situation. Finally, in the real process disturbance situation, for critical dimension control, DAPI can improve 10% on Process Capability Ratio and improve 11% on process standard deviation. Also, for overlay errors reduction, DAPI can improve 16% on Range and improve 11% on root Mean squared error. For all scenarios and two real problems, DAPI can perform better than EWMA controller.
Mendes, Carlos Hugo Ribeiro. "Robust Controller Design for an Autonomous Underwater Vehicle." Master's thesis, 2017. http://hdl.handle.net/10400.6/7956.
Повний текст джерелаÉ visível, a nível mundial, um aumento considerável do interesse em Veículos Autónomos Subaquáticos (Autonomous Underwater Vehicles - AUV). O que torna esta tecnologia tão atraente é a capacidade de operar sem intervenção humana. Contudo, a ausência do ser humano restringe a operação do AUV ao seu sistema de controlo, computação e capacidades de detecção. Desta forma, conceber um controlo robusto é obrigatório para viabilizar o AUV. Motivado por este facto, esta tese tem como objetivo apresentar, discutir e avaliar duas soluções de controlo linear, a propor a um AUV desenvolvido por um consórcio liderado pelo CEiiA. Para que o projeto do controlador seja possível, o modelo dinâmico deste veículo e respectivas considerações são primeiramente abordados. Com a finalidade de possibilitar a operação do veículo, torna-se essencial a elaboração de leis de guidance adequadas. Para este efeito são apresentados algorítmos de Waypoint following e Station keeping, e de path following. Para a projeção dos controladores é derivada uma versão linear do modelo dinâmico, considerando um único ponto operacional. Através da separação do modelo linear em três subsistemas são criados quatro controladores Proporcional Integral Derivativo (PID) para cada grau de liberdade (Degree Of Freedom - DOF) do veículo. É também projetado um Regulador Linear Quadrático (LQR), baseado na separação do modelo linear em dois subsistemas, longitudinal e lateral. É ainda apresentada uma lei de alocação de controlo para distribuir o sinal de saída dos controladores pelos diferentes atuadores. Esta provou melhorar a manobrabilidade do veículo. Os resultados finais apresentam um desempenho sólido para ambos os métodos de controlo. No entanto, neste trabalho, o LQR provou ser mais rápido do que o PID.
Ghoshal, Anirban. "Operation of Three Phase Four Wire Grid Connected VSI Under Non-Ideal Conditions." Thesis, 2013. http://etd.iisc.ernet.in/2005/3386.
Повний текст джерелаKumar, M. Prasanna. "Studies On Application Of Control Systems For Urban Water Networks." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/874.
Повний текст джерелаKumar, M. Prasanna. "Studies On Application Of Control Systems For Urban Water Networks." Thesis, 2008. http://hdl.handle.net/2005/874.
Повний текст джерелаPita, Duarte da Silva. "Interligação de microrredes híbridas com um conversor multinível." Master's thesis, 2021. http://hdl.handle.net/10400.13/3979.
Повний текст джерелаEnergy efficiency and smart coordination of grid resources are issues of utmost importance nowadays. Hybrid microgrids are an interesting solution for the integration of AC and DC loads and generation sources in their respective AC or DC buses. This allows for a reduction of voltage conversion stages that are prevalent in the more traditional AC grid, leading to a higher efficiency. In the scope of this work a multilevel converter was used to interconnect an AC microgrid to a DC microgrid. The interlinking converter can control either the AC currents, the DC bus voltage, or the AC bus voltage, depending on the hybrid microgrid operation mode. The converter AC currents were controlled using sliding mode and pulse width modulation (PWM) techniques starting from the converter state variable representation. The AC and DC microgrid voltages were controlled by outer loop PI (Proportional Integral) controllers. The three operation modes of the interlinking converter were simulated using MATLAB/Simulink. A low power laboratory prototype was later used to further confirm the simulations results. The results showed a fast dynamic response of the AC currents, using both control techniques. PWM however resulted in reduced harmonics. The DC microgrid voltage control was successfully implemented and resulted in a good response following changes in voltage reference and DC microgrid consumption. When local power production was available, the converter was able to transfer the excess power to the AC microgrid, thus balancing the produced and consumed local power. The AC microgrid voltage control was capable of adequately regulate the three phase AC voltages and react to changes in voltage reference and local power consumption.
Ghoshal, Anirban. "Operation of Three Phase Four Wire Grid Connected VSI Under Non-Ideal Conditions." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3386.
Повний текст джерела