具有非对称气动伺服阀的气动压力控制系统建模与分析  

Modelling and Analysis of a Pneumatic Force Control System with an Asymmetric Servovalve

作　　者：訚耀保[1] 荒木献次 

机构地区：[1]同济大学,上海200092 [2]日本国立琦玉大学,日本琦玉3388570

出　　处：《中国机械工程》2009年第17期2107-2112,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(50775161);国家863高技术研究发展计划资助项目(2007AA05Z119)

摘　　要：分析了非对称气动伺服阀控单作用气缸的气动压力控制系统的数学模型。通过非对称伺服阀的实验,得到了伺服阀的流量增益、流量-压力系数和压力增益系数,建立了系统的数学模型(包括三阶传递函数式),取得了结构参数与增益、系统带宽、稳态误差之间的关系。进行了闭环压力控制系统频率响应的实验,实验结果与计算结果十分接近。The mathematical model of a pneumatic force control system with an asymmetric servovalve and a single-acting cylinder were described. From the experimental results of an asymmetric servovalve, the typical three coefficients of flow gain, flow-pressure coefficient and pressure gain are obtained. The dynamic models were derived and simplified to be as a transfer function of the third order. The relations among mechanical parameters and frequency bandwidth, steady--state error of the system were also discussed. The calculation results are in good agreement with the experimental ones.

关 键 词：气动技术 非对称气动伺服阀 传递函数 单作用气缸 弹性负载 

分 类 号：TH138.52[机械工程—机械制造及自动化]