![]() ![]() And therefore, the steady gas flow force, generated by high pressure and high speed gas flow, cannot be neglected and is an important disturbance for the VCM direct-drive single stage high-pressure pneumatic servo valve. However, the velocity of gas is up to sonic when high-pressure gas flows through the servo valve orifice. ![]() ![]() At present, many studies about flow force are concentrated mainly on hydraulic valves, but rarely on pneumatic valves. A novel voice coil motor (VCM) direct drive single stage high-pressure pneumatic servo valve is designed, and then the steady gas flow force acting on the spool of the servo valve is investigated by numerical simulation and experimental methods in this paper.
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