Siso Control Systems
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Controle preditivo baseado em modelo neuro-fuzzy de sistemas não-lineares aplicado em sistema de refrigeração = : Model predictive control based on neuro-fuzzy nonlinear systems applied to a refrigeration plant / Model predictive control based on neuro-fuzzy nonlinear systems applied to a refrigeration plant
Refrigeration systems can be found in many different branches of industry and are characterized as great energy consumers with considerable non-linear behavior. Several studies have been developed to promote the reduction of energy costs and to minimize the effects of nonlinearities in these systems. The use of automation and process control, particularly th
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/07/2012
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2. Códigos LDPC quaternários aplicados à técnica de transmissão OFDM / Quaternary LDPC codes applied to OFDM transmission technique
This dissertation addresses the study of error correcting codes based on sparse non-binary matrices. The LDPC (Low Density Parity Check) codes constitute a efficient family of codes generated by sparse parity check matrices and it is considered as one of the classes of codes that presents the best performance in digital communications systems. LDPC codes ove
Publicado em: 2010
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3. AnÃlise do desempenho de sistemas de controle
When the controllerâs performance is reduced along the time and the control efficiency is no longer satisfactory, then it is necessary to develop certain techniques for continuously monitor control systems such as it can keep track of process changes maintaining the characteristics of efficiency of the original controller design. The divergences between con
Publicado em: 2007
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4. Controles monovariáveis e multivariáveis aplicados a sistemas aeroespaciais fracamente ou fortemente acoplados / Monovariable and multivariable controls applied to weakly or strongly coupled aerospace systems
This work intends to study and compare two Classical (Single Input Single Output) Control design methods and three Modern (Multiple Input Multiple Output) Control design methods applied to weakly or heavily coupled aerospace systems. This work has as first application the Multi-Mission Platform - MMP currently under development at INPE. The models are develo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2006
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5. Monovariable and multivariable controls applied to weakly or strongly coupled aerospace systems / Controles monovariáveis e multivariáveis aplicados a sistemas aeroespaciais fracamente ou fortemente acoplados
O objetivo deste trabalho é estudar e comparar dois métodos de projeto do Controle Clássico (Uma Entrada, Uma Saída) com três métodos de projeto do Controle Moderno (Múltiplas Entradas, Múltiplas Saídas) aplicados a sistemas aeroespaciais fracamente ou fortemente acoplados. Este trabalho tem como primeira aplicação a Plataforma Multimissão - PMM
Publicado em: 2006
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6. Estudos de um método para cálculo de ganhos da malha de controle de atitude de um lançador de satélites / Analytical method for computing the controller gains of a satellite launcher
In this work, the VLS (Satellite Launcher Vehicle) control gains are calculated applying a frozen poles technique for each 1-second interval, allowing that a linear time invariant analysis to be executed inside each time interval during all flight phases. The system control architecture is proportional-integral with derivative feedback, making the 3 gains (p
Publicado em: 2004
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7. Estudos de um método para cálculo de ganhos da malha de controle de atitude de um lançador de satélites / Analytical method for computing the controller gains of a satellite launcher
Neste trabalho, os ganhos do controlador do VLS são calculados aplicando-se a técnica de pólos congelados em intervalos de 1 segundo de vôo, permitindo que uma análise linear invariante seja adotada para cada intervalo de tempo ao longo de todas fases de vôo. Como a arquitetura de controle adotada é fixa (PID), os valores dos ganhos devem ser escalona
Publicado em: 2004
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8. Comparação do desempenho de um sistema de refrigeração para resfriamento de liquido, controlado a diferentes modos de controle. / Comparison of the system performancefor liquid refrigeration, controlled cooling the different ways of control.
A prototype of refrigeration system in a chiller plant was assembled and instrumented for development of a conventional and fuzzy controllers. Fuzzy controls are increasingly being applied to industrial process especially in process with complex mathematical modeling. The capacity of action in a system controlled by a fuzzy logic is based only on a expert kn
Publicado em: 2003
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9. Adaptive neural control of a class of unknown nonlinear systems.
The well-known capacity of the neural networks structures to approximate functions and nonlinear systems, to any degree of accuracy, on a compact domain, has motivated its use in actual control problems where the presence of uncertainties is inevitable. Neural networks models can be used to parameterize unknown nonlinearities, hence, the linear parameterizat
Publicado em: 2002
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10. Identificação e controle de processos não lineares utilizando redes neurais artificiais
Considering that most of the industrial processes of interest to Chemical Engineering present a certain degree of inherent non-linearity or one introduced by systems of automatic control, an important necessity of inquiring about the performance the new techniques derived from artificial intelligence, whose interest here is in the artificial neural networks,
Publicado em: 2001