【摘 要】
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A mathematic model is built up to analyze the influences of a pilot valves leakage on the performances of pneumatic pressure proportional valve, and the perform
【机 构】
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State Key Laboratory of Fluid Power Transmission and Control
论文部分内容阅读
A mathematic model is built up to analyze the influences of a pilot valves leakage on the performances of pneumatic pressure proportional valve, and the performances are simulated by using MATLAB. The results indicate that using slide pilot valve in the valve system is feasible, but the leakages influences can not be neglected, especially it may induce instability in a low output pressure situation. A pilot valve using too large throttle window will cause the valve oscillate. To improve the working condition of pilot valve, a method adopting different widths of two throttle window is proposed. According to our simulation, this method balances the pressure drop between the two stage throttle ports, and reduces the influences of pilot valves leakage.
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