Programmable Controller
Mostrando 13-24 de 26 artigos, teses e dissertações.
-
13. Avaliação de controle neural a um processo de quatro tanques acoplados
The main goal of this doctorate thesis is the evaluation of neural control on a four interconnected tanks process, in laboratory environment, where the controlled variable is the water level height of the fourth tank. The dynamics of this process is non linear, as the outflow from the tanks depends on the square root of corresponding water height. This type
Publicado em: 2009
-
14. Controlador adaptativo backstepping a estrutura variável
In this work, a Variable Structure Adaptive Backstepping Controller (VS-ABC) for monovariable, linear time invariant plants with relative degree one is presented. Instead of traditional integral adaptive laws for estimating the plant parameters, switching laws are used to increase robustness to parametric uncertainties and disturbances, as well as, to improv
Publicado em: 2008
-
15. Implementação e simulação de algoritmos de escalonamento para sistemas de elevadores usando arquiteturas reconfiguráveis.
This work proposes an elevator system that allows the vertical transport of passengers in a efficient way. This approach is based on the implementation of dispatching algorithms using Reconfigurable Architectures. A fuzzy logic method was proposed in order to identify traffic patterns in the building and schedule the elevators, which was carried out by imple
Publicado em: 2006
-
16. Sistema elétrico automatizado objetivando otimização na alimentação de centros de consumo. / Automated electrical system aiming optimal supply at consumption centers.
This study is about the usage of the Petri Net as an analysis and development tool of the automation of a pilot micro plant of 130 kW. The project was carried out in the energy quality laboratory center at the Escola Politécnica de São Paulo. Its main goal was to study the most important variables related to the quality of energy and the functionalities of
Publicado em: 2006
-
17. Um fotômetro multi-led microcontrolado, portátil e de baixo custo
A microcontrolled, portable and inexpensive photometer is described. It uses six light-emitting diodes (LEDs) as radiation sources and a phototransistor as detector, as well as a microcontroller (PIC - Programmable Controller of Interruption). This device provided total autonomy to the proposed photometer, which was successfully applied to determination of F
Química Nova. Publicado em: 2005-12
-
18. SISTEMA DE REGULAGEM DO ESFORÃO DE CORTE EM CHAPAS METÃLICAS COM VARIAÃÃO DE ESPESSURAS / SYSTEM OF REGULATION OF THE CUT EFFORT IN METALLIC PLATES WITH VARIATION IN THICKNESSES
This work presents the project of a system that can be applied under a punching operation with different thickness metal plates and the pressure variation, knowing that is one of the most used process in the mechanical industry conformation, it reaches the most efficient results applied to the studied process. The main is to consider a electropneumatic syste
Publicado em: 2005
-
19. Sistemas de automação e supervisão do laboratório de avaliação dos processos de medição de vazão e BSW
During a petroleum well production process, It is common the slmultaneous oil and water production, in proportion that can vary from 0% up to values close to 100% of water. Moreover, the production flows can vary a lot, depending on the charaeteristies of eaeh reservoir. Thus being, the meters used in field for the flow and BSW (water in the oil) measurement
Publicado em: 2003
-
20. Integração de processos em tempo real para monitoramento e controle : aplicação para planta de PET
This work deals with the implementation of a soft-sensor for a PET (Polyethylene terephtalate) industrial process based on neural networks. The soft-sensor acts as redundant measure current for the polymer viscosity in the liquid phase; and, in case of mechanical faults, it is able to diagnoses the faults on the viscometer and can replace it.The viscosity co
Publicado em: 2003
-
21. Application of Fuzzy Logic in the Production of Penicillin G Acylase in Bacillus megaterium Cultivations. / Aplicação da lógica fuzzi na produção de penicilina G Acilase em cultivos de Bacillus megaterium.
Penicillin G acylase (PGA) is an important enzyme for the pharmaceutical industry. This enzyme has industrial use in the hydrolysis of penicillin G to obtain 6-aminocephalosporanic acid (6-APA), essential intermediate for the production of beta-lactam antibiotics. Many microorganisms produce PGA, but Bacillus megaterium is one of the few that excretes the en
Publicado em: 2003
-
22. Desenvolvimento de uma instalação de separação de gases por adsorção e modelagem do processo
Separation processes account for the major production costs in chemical, petrochemical and related industries. Commercial pressure swing adsorption processes (the so-called PSA processes) have been intensively applied in industry since they need lower energy and are less costly than conventional separation processes for low to medium production rates. This w
Publicado em: 2000
-
23. Controle em destilação batelada : controle adaptativo e controle preditivo com modelo baseado em redes neurais artificiais
Separation processes are very important in chemical industries where batch distillation appears as one of its oldest processes. Over the last few years batch processing has received renewed attention because of the growing interest in the production of high-technology, high-value added chemical and biochemical products and also in environmental problems of i
Publicado em: 1995
-
24. Projeto e construção de um estimulador optico alternador e reversor de padrões para potencial evocado
Visual evoked potential (VEP) is a cortical response elicited by optical stimulation of the retina recorded on the scalp in the occipital region. It- can.be( used as an objective index of visual experience in studies of human visual system, requirino little patient cooperation and without involvement of subjective judgement. Two kinds of stimuli have been us
Publicado em: 1989