Proportional Integral Control
Mostrando 13-24 de 42 artigos, teses e dissertações.
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13. Operação do gerador de indução em conexão assíncrona com a rede monofásica / Induction Generator Asynchronously connected to a single phase network
Este trabalho apresenta a proposta de um sistema para geração de energia elétrica baseado na Máquina de Indução Trifásica (MIT) com rotor tipo gaiola de esquilo associada a um conversor de freqüência chaveado no modo PWM (modulação por largura de pulsos na sigla em inglês) senoidal. O lado CC do conversor de frequência é conectado assincronamen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/03/2010
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14. Development, implementation and performance evaluation of a self-tuning regulator adaptive controller applied to a FCC process / Desenvolvimento, implementação e avaliação de desempenho de um controlador adaptativo do tipo self-tuning regulator aplicado a um processo FCC
This work had as main objective the development and implementation of an selftuning regulator (STR) adaptive controller, with subsequent comparison of its performance with a PID (proportional-integral-derivative) controller and two predictive controllers, namely a predictive based on artificial neural networks (MPC-ANN) and a dynamic matrix controller (DMC).
Publicado em: 2010
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15. Operação do gerador de indução em conexão assíncrona com a rede monofásica / Induction Generator Asynchronously connected to a single phase network
Este trabalho apresenta a proposta de um sistema para geração de energia elétrica baseado na Máquina de Indução Trifásica (MIT) com rotor tipo gaiola de esquilo associada a um conversor de freqüência chaveado no modo PWM (modulação por largura de pulsos na sigla em inglês) senoidal. O lado CC do conversor de frequência é conectado assincronamen
Publicado em: 2010
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16. Study of a cooling system with air forced with monitoring of electrical energy consumption / Estudo de um sistema de resfriamento com ar forçado com monitoramento do consumo de energia eletrica
This work is a study of a classical controller implementation using tuning method referred to as IMC (Internal Model Control), aimed at reducing electrical energy consumption that proceed the appropriate relation between this consumption and cooling time of the cooling process with forced air. For this, the supervisory system installed is able to manipulate
Publicado em: 2010
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17. Control of Reynolds number in a high speed wind tunnel
Abstract: A conceptual control model for the Reynolds number test based on isentropic relations was established for the supersonic wind tunnel. Comparison of the system response of the model simulation and the actual wind tunnel test data was made to design the control system. Two controllers were defined: the first one was based on the stagnation pressure a
J. Aerosp. Technol. Manag.. Publicado em: 2009-06
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18. Control of integrating process with dead time using auto-tuning approach
A modification of Smith predictor for controlling higher order processes with integral action and long dead-time is proposed in this paper. The controller used in this Smith predictor is an Integral-Proportional Derivative controller, where the Integrator is in the forward path and the Proportional and Derivative control are in the feedback, acting on the fe
Brazilian Journal of Chemical Engineering. Publicado em: 2009-03
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19. Controle digital de inversores monofásicos com realimentação de estados internos
This work presents a contribution to the study of PWM sinusoidal inverters. It is presented some voltage output control techniques highlighting the advantages and disadvantages. One technique using two feedback loops and compensation by proportional integral compensators, besides showing a natural short circuit protection, is implemented and evaluated by stu
Publicado em: 2009
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20. STUDY, CONTROL AND IMPLEMENTATION OF THE PFC BOOST CONVERTER OPERATING IN MIXED CONDUCTION MODE / ESTUDO, CONTROLE E IMPLEMENTAÇÃO DO CONVERSOR BOOST PFC OPERANDO NO MODO DE CONDUÇÃO MISTA
This Master Thesis presents the study and proposes a digital control system applied to the PFC boost converter operating in mixed conduction mode. The motivation to this subject, a bibliographic review of the existing current control techniques and the objectives of this work are presented in the first chapter. The control system is composed of a current loo
Publicado em: 2009
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21. AUTOMATIC PROJECT OF ENCODERLESS SPEED REGULATORS APPLIED TO THREE-PHASE INDUCTION MOTORS / PROJETO AUTOMÁTICO DE CONTROLADOR DE VELOCIDADE SEM SENSOR MECÂNICO PARA MOTORES DE INDUÇÃO TRIFÁSICOS
This works proposes parameters estimation algorithm to auto-tune the control laws of a speed sensorless servo. The identification process of the electrical and mechanical parameters is based on recursive least squares method (RLS) and utilizes just measured stator currents. The electrical parameters are obtained by the transfer function of the motor with loc
Publicado em: 2008
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22. Uma ferramenta de apoio ao projeto de sistemas de controle para processos com atraso
Este trabalho apresenta uma nova ferramenta de identificação, análise e projeto de controladores para sistemas lineares e monovariáveis com atraso de transporte, o qual integra as principais estruturas de controle utilizadas no meio industrial: PID (Proportional-Integral-Derivative), DTC (Dead-time Compensator) e MPC (Model Predictive Control ). A ferram
Publicado em: 2008
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23. Controle automatico eletronico de ganho com supressão de transientes aplicado a EDFAs em redes opticas WDM / Eletronic automatic gain control with transient suppresion applied over WDM optical networks
IIn WDM optical communication systems erbium doped fiber amplifiers (EDFA) have an essential function, enabling amplification of simultaneous channels independently of transmit rate. The majority of current WDM systems use point to point configuration operating with a fixed number of channels over the optical link. However, the new generation optical systems
Publicado em: 2008
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24. Estudos quÃmico e bioquÃmico do yacon (Smallanthus sonchifolius) âin naturaâ e processado e influÃncia do seu consumo sobre nÃveis glicÃmicos e lipÃdeos fecais de ratos / Chemical and biochemical studies of in natura and processed yacon (Smallanthus sonchifolius) and influence of its consumption on glucemic levels and fecal lipids of rats
Research on foods which can aid in the prevention and treatment of pathologies, mainly the non-transmissible chronic diseases, have been being more and more frequent. Seeking to increase the knowledge on yacon, this work was aimed to study that root and evaluate the influence of yacon pulp flour in the possible reduction of post-prandial glucemia and increas
Publicado em: 2008