| PILOT LEAKAGE＇S INFLUENCES ON THE PERFORMANCES OF EXTRA HIGH PRESSURE PROPORTIONAL PNEUMATIC VALVE |
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| 引用本文： | Chen Yize Wang Xuanyin Xu Zhipeng Tao Guoliang State Key Laboratory of Fluid Power Transmission and Control,Zhejiang University,Hangzhou 310027,China. PILOT LEAKAGE＇S INFLUENCES ON THE PERFORMANCES OF EXTRA HIGH PRESSURE PROPORTIONAL PNEUMATIC VALVE[J]. 机械工程学报(英文版), 2005, 18(2): 208-211 |
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| 作者姓名： | Chen Yize Wang Xuanyin Xu Zhipeng Tao Guoliang State Key Laboratory of Fluid Power Transmission and Control Zhejiang University Hangzhou 310027 China |
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| 作者单位： | Chen Yize Wang Xuanyin Xu Zhipeng Tao Guoliang State Key Laboratory of Fluid Power Transmission and Control，Zhejiang University，Hangzhou 310027，China |
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| 基金项目： | This project is supported by National Natural Science Foundation of China (No.50122115)the National 10th Five Years Plan Special Research Programs of China(No.2003BA408B14). |
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| 摘 要： | A mathematic model is built up to analyze the influences of a pilot valve's 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 leakage's 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 valve's leakage.
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| 关 键 词： | 比例值 数学模型 渗漏仿真 高压气动飞行 空气阻力 |
PILOT LEAKAGE'S INFLUENCES ON THE PERFORMANCES OF EXTRA HIGH PRESSURE PROPORTIONAL PNEUMATIC VALVE |
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| ChenYize WangXuanyin XuZhipeng TaoGuoliang. PILOT LEAKAGE'S INFLUENCES ON THE PERFORMANCES OF EXTRA HIGH PRESSURE PROPORTIONAL PNEUMATIC VALVE[J]. Chinese Journal of Mechanical Engineering, 2005, 18(2): 208-211 |
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| Authors: | ChenYize WangXuanyin XuZhipeng TaoGuoliang |
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| Affiliation: | StateKeyLaboratoryofFluidPowerTransmissionandControl,ZhejiangUniversity,Hangzhou310027,China |
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| Abstract: | A mathematic model is built up to analyze the influences of a pilot valve's 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 leakage's 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 valve's leakage. |
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| Keywords: | Pneumatic Proportional valve Mathematic model Leakage simulation |
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