Pid Controllers
Mostrando 25-36 de 54 artigos, teses e dissertações.
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25. Avaliação numérica e experimental de técnicas de controle para conforto térmico em edificações
Abstract: This work addresses the problem of numerical and experimental analysis of comfort control algorithms for air conditioning systems with one manipulated variable. This is a frequent case present in HVAC (Heating, Ventilating and Air Conditioning) systems. The aim of HVAC equipment is to promote thermal comfort for building occupants. So, in order to
Publicado em: 2008
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26. Comparative study of the performance of fuzzy and conventional controllers applied in a bioprocess / Estudo comparativo do desempenho de controladores fuzzy e convencional aplicados em um bioprocesso
The use of fuzzy controllers in bioprocesses has increased greatly in the last few years. In conventional controllers, assumptions and simplifications are often made to build a precise mathematical model that may be far from the real situation. In contrast, fuzzy controllers are an attractive technique for the control of plants that are ill-defined or non-li
Publicado em: 2007
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27. Experimental evaluation of the continuous pasteurization control of a orange juice model fluid / Avaliação experimental do controle da pasteurização continua de um fluido modelo de suco de laranja
The goal of this work was the building, instrumentation and implementation of conventional and non-conventional controllers in a HTST (Hight Temperature Short Time) continuous processing prototype of fruit juice. A plate heat exchange with three sections of heat exchange (regeneration, heating and cooling) and a holding tube were used to achieve a holding ti
Publicado em: 2007
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28. Metodologia para aferição da ação de controle proporcional integral derivativa implementada em controladores industriais. / Methodology for gauging of the action of proportional integral derivative control implemented in industrial controllers.
Uma das atribuições da engenharia de automação é o desenvolvimento de solução de automação e controle de processos contínuos industriais. Para tanto, a principal ferramenta emprega para este controle é a ação de controle Proporcional-Integral-Derivativo (PID). Nas últimas décadas diversas empresas fabricantes de equipamentos de automação ind
Publicado em: 2007
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29. Method ot get obtains of the governor s parameters by a hydraulic turbine / Metodo de obtenção dos parametros do regulador de uma turbina hidraulica
This work presents a new proposal to obtain the parameters of the regulator of a hydraulic turbine, looking for the goal to increase the operational control of a hydroelectric power plant. Among many existing methods, the Ziegler-Nichols shows itself adequate because in the determination of the parameters of the regulator simulations are carried out witch co
Publicado em: 2007
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30. Determinação dos parâmetros do controlador preditivo generalizado com função de pesos variante no tempo através de algoritmos genéticos
The predictive control technique has gotten, on the last years, greater number of adepts in reason of the easiness of adjustment of its parameters, of the exceeding of its concepts for multi-input/multi-output (MIMO) systems, of nonlinear models of processes could be linearised around a operating point, so can clearly be used in the controller, and mainly, a
Publicado em: 2007
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31. Desenvolvimento de simuladores para treinamento em sintonia de controladores aplicados a equipamentos com grande risco de acidente / Development of simulators to be used to trainning the tunning of controllers of equipments with high risk of accidents
The objective of this work is to develop real time dynamic simulators to use them as supporting tools in instrumentation and process control technical courses. The developed simulators are as following : - simulator for the equipment to test control valves showing all the acessories necessary to test a control valve. In this phase the concepts of Cv, curves
Publicado em: 2007
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32. Development of simulators to be used to trainning the tunning of controllers of equipments with high risk of accidents / Desenvolvimento de simuladores para treinamento em sintonia de controladores aplicados a equipamentos com grande risco de acidente
O objetivo deste trabalho foi o de desenvolver simuladores dinÃmicos em tempo real para utilizÃ-los como ferramenta de apoio em cursos de nÃvel tÃcnico de instrumentaÃÃo e controle de processos. Os simuladores desenvolvidos foram os seguintes: - simulador de uma bancada de testes para vÃlvulas de controle. Nesta simulaÃÃo sÃo apresentados os concei
Publicado em: 2007
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33. Metodologia para re-sintonia de controladores PID industriais
The present work has as objective to present a method of project and implementation of controllers PID, based on industrial instrumentation. An automatic system of auto-tunning of controllers PID will be presented, for systems of first and second order. The software presented in this work is applied in controlled plants by PID controllers implemented in a CL
Publicado em: 2006
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34. Ambiente Educacional Multifuncional Integrado para Sintonia e Avaliação do Desempenho de Malhas Industriais de Controle
Industrial processes as well as the production based on the philosophy of quality assurance demand controllers that work facilities with their finely parameters, independent of the load situations and disturbances. A lot has been spoken regarding the PID controllers tuning, however, still, most is used in way PI or they possess adjusted parameters in an inad
Publicado em: 2006
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35. Avaliação da demanda, do consumo eletrico e do controle de temperatura para condicionamento de ambientes, usando sistemas de refrigeração com termoacumulação. / Evaluation of demand, electric consumption and control of temperature for environment conditioning, using refrigeration systems with thermal storage.
The commercial and financial building together represent a great parcel of the consumption of electric energy in the commercial sector, about 24,6 % of the total. The environment conditioning systems and commercial refrigeration in these types of building are responsible for a great consumption of electric energy and demand, being in the band of 35 % through
Publicado em: 2006
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36. Controle dinâmico de robôs móveis com acionamento diferencial
This work addresses the dynamic control problem of two-wheeled differentially driven non-holonomic mobile robot. Strategies for robot positioning control and robot orientating control are presented. Such strategies just require information about the robot conguration (x, y and teta), which can be collected by an absolute positioning system. The strategies de
Publicado em: 2006