一种新型电液伺服阀  

A New-type of Electro-hydraulic Servo-valve

作　　者：鄂世举[1] 杨志刚[1] 曲兴田[1] 吴博达[1] 程光明[1] 

机构地区：[1]吉林大学机械工程学院,长春130025

出　　处：《压电与声光》2004年第5期377-379,385,共4页Piezoelectrics & Acoustooptics

基　　金：国家"八六三"基金资助项目 ( 2 0 0 1AA42 3 2 70 )

摘　　要：研制了一种新型的直动式电液伺服阀 ,伺服阀的驱动器由压电元件实现。该伺服阀采用电反馈原理 ,利用位移传感器将位置信号反馈给伺服放大器 ,与伺服阀的压电驱动器形成一个闭环位置系统 ,提高了伺服阀的动静态性能。该文对伺服阀样机的静态特性进行了测试 ,分析了特性曲线上所表征的性能指标及其影响因素 ;依据实验曲线获得静态特性参数 ,与北京机床研究所生产的 QDY - D4 0型电磁驱动直动式电液伺服阀进行比较 ,指出了该阀的优点和不足 。We design direct-driving electro-hydraulic servo-valve which is droven by piezoelectric components. A closing-loop controlling system is composed of a measuring displacement sensor used to feedback the displacement signals to servo-amplifier and the piezoelectric driver, which improved the dynamic and static states capability of the servo-valves. The static state nature of the servo-valve is measured, the capability parameters from nature curves and its affecting factors are analyzed. The static state capability parameters of the servo-valve are compared with those of the one(the model is QDY-D40) which is made by Beijing machine tool research institute. Besides the strongpoint, the deficiency is pointed out too. Furthermore, some ways to improve the capability of the valve are given.

关 键 词：电液伺服阀 压电元件 静态特性 

分 类 号：TH137.33[机械工程—机械制造及自动化]