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|Type:||Artigo de periódico|
|Title:||Development And Evaluation Of A Low Cost Servo-valve For Liquid Inputs Application [desenvolvimento E Avaliação De Uma Servoválvula De Baixo Custo Para A Aplicação De Insumos Líquidos]|
|Abstract:||The present work aimed the development of a low cost servo-valve that answers to an electronic control signal, for variable rates liquid inputs application. A literature research to define which valve type should be used was made. A mechanically activated proportional valve with an electronically controlled servo-engine was designed and evaluated. Since developed the servo-valve, the system was submited to a number of tests .The evaluation of its behavior was obtained in terms of repeatability, hystheresis and linearity. The test was accomplished in a bench, specially developed for this aim. As a result, were obtained three curves of opening percentage as function of flow rate, describing three opening and closing increments in two different work pressures. The servo-valve presented a good repeatability, reasonable hysteresis and a typically quadratic curve. This one maintained the low cost target. These results were very satisfied because the non-linearity and the hysteresis could be easily corrected by software.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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