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Pneumatics in Small Medical Devices

... devices,” says Howe. “The unit uses a proportional servo valve with embedded electronics and software, and it has a very specialized ... be used as an independent actuator or as an alternative to solenoid and voice coil type actuators. McDonnell says ...
Stability vs. Fill-Time in Proportional Control Applications

... reason for oscillation in this situation is due to improper valve sizing allowing too much air to pass over the sensor element. In general, ... Secondly, the orifice size or flow rate of the internal solenoid valves can help stabilize the application when a limited amount of ...