Abstract
Recently high response solenoid valves have been developed capable of switching the airflow up to 200 cycles per second. If these vales are used as switching devices of the digital pneumatic pressure servo system, it enables response as quick as milliseconds for the output flow change.
In this paper, the design and performance of digital pneumatic pressure servo system using two high response valves are described. By the results of the tests on the flow characteristics and responses for output flow change, the performance of new system is shown as follows. The output of the servo system can yield a higher accuracy mean pressure than the conventional diaphragm-type pressure regulator and responses within 15 millisecond. The output pressure contains ripple noise within 1 or 2 percent of its level.
