Pneumatic Control Valves
Mostrando 1-3 de 3 artigos, teses e dissertações.
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1. 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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2. 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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3. DEVELOPMENT OF A THREE DEGREE-OF-FREEDOM PNEUMATIC LINK FOR FLEXIBLE ROBOTIC MANIPULATORS / DESENVOLVIMENTO DE UM ELO PNEUMÁTICO DE 3 GRAUS DE LIBERDADE PARA MANIPULADORES ROBÓTICOS FLEXÍVEIS
Recently, the concept of flexible manipulators has attract great interest. These devices present a continuously deforming vertebral column, in opposition to the traditional robotic manipulators link/joint/link with rigid links. Flexible systems offer a potential increase in the capacity of interaction with the environment, being apt to adjust itself to the c
Publicado em: 2006