Loop Pneumatico
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Estudo da alimentação de sólidos em sistemas de transporte pneumático
Dentre as partes que compõem um leito pneumático, a alimentação de sólidos é uma das áreas mais importantes, devido à complexidade fluidodinâmica dessa região, além de afetar a estabilidade operacional, viabilidade técnica e econômica e eficiência do sistema. O presente estudo tem o objetivo de realizar uma avaliação experimental da fluidodin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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2. Detection and qualification of friction in control valves. / Detecção e quantificação de atrito em válvulas de controle.
This work will study methods for detection and quantification of friction in control valves. These valves are the main final elements of control loops in industrial processes. The presence of friction can increase the variability of the control loop, causing loss of product quality, increase need of maintenance and significant economical impacts. Many studie
Publicado em: 2009
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3. Nonlinear process identification and friction quantification in control valves. / Identificação de processos não-lineares e quantificação de atrito em válvulas de controle.
The friction in control valves and inadequate controller tuning are two of the major sources of performance degradation in control loops that include such devices. As friction models are needed to diagnose abnormal valve operation or to compensate such undesirable effects, process models play an essential role in controller design. This work extends existing
Publicado em: 2009
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4. Compensação de atrito em válvulas de controle. / Friction compensation in control valves.
Friction is a nonlinearity that generally produces bad performance of a mechanical system with moving parts. In this work, the studied mechanical element is the process control valve, which is the most used final control element in process industries. The presence of friction in control valves increases control loop variability, generating impact in all plan
Publicado em: 2008
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5. Influência do alimentador de sólidos na fluidodinâmica do transporte pneumático.
Pneumatic transport is an operation where powdery and granular materials are conveyed through a pipeline suspended in a gas flow. It is usually found in several industries segments and it is used as a carrier, such as, in beans production; drying operation, like grain dryers; or as reactors, in cracking catalytic reactions, combustion operations and precalci
Publicado em: 2007