Testing System Design of Hydrdulic Proportionl Valve and Servo Valve

In order to accurately evaluate electro-hydraulic proportional and servo valve performance strengths and weaknesses，testing theory，operating conditions and test circuit were researched and analyzed.And test system of hydraulic proportional valve and servo valve was designed.The test system based on the pressure difference on both sides of the valve and valve leakage，not only to determine the proportional valve and servo valve performance situation，but also to guide the improvement of processing technology to improve manufacturing precision valve.