非对称高速气动伺服阀的研究  

Research on an Asymmetric Pneumatic Servovalve

作　　者：訚耀保[1] 水野毅 荒木献次 

机构地区：[1]同济大学机械工程学院,上海200092 [2]日本国立埼玉大学工学部

出　　处：《流体传动与控制》2007年第3期4-8,共5页Fluid Power Transmission & Control

基　　金：上海市浦江人才计划资助项目(06PJ14092)

摘　　要：介绍了一种新型非对称气动伺服阀。该阀作为硬件补偿,实现了气动系统下降时间与上升时间相同的快速响应特性。研制成的非对称气动伺服阀阀芯,在正反方向同等的阀位移时,下游节流口的通流能力为上游节流口的两倍。试验结果表明,非对称伺服阀频率响应带宽达200Hz,阶跃响应上升时间达1ms。对称阀的名义流量范围为+191至-171NL/min,非对称阀的名义流量范围扩大为+191至-337NL/min。理论分析结论和实验结果相吻合。This paper describes an asymmetric electro-pneumatic servovalve and hardware compensation approaches for high speed control of rise time and step-down time. The flow capacity of the downstream control orifice of asymmetric valve is about twice of that of the symmetric valve at the same spool displacement. Experimental results show that the bandwidth is 200 Hz and rise time is less than 1 ms. The flow capacity of the downstream control orifice of asymmetric valve （-337NL/min） is about twice of that of the symmetric valve （-171NL/min）.

关 键 词：气动控制 非对称气动伺服阀 压力流量特性 频率响应 

分 类 号：TH137[机械工程—机械制造及自动化]