双压电晶片驱动喷嘴挡板式伺服阀  

Nozzle-Flapper Servo-Valve Driven by Piezoelectric Bimorph

作　　者：曲兴田[1] 鄂世举[1] 吴博达[1] 杨志刚[1] 吴玉魁[1] 

机构地区：[1]吉林大学机械科学与工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2005年第2期153-156,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金："863"国家高技术研究发展计划项目(2001AA423270)

摘　　要：给出了双压电晶片驱动喷嘴挡板式伺服阀的基本结构,分析了双压电晶片的频率特性和静态位移特性,针对不同基板尺寸和晶片厚度进行了静态测试,在伺服阀实验台上进行了初步验证。试验结果表明:双压电晶片驱动喷嘴挡板式伺服阀具有结构简单、响应快、分辨率高、无电磁干扰、易于控制的优点,可以满足现代精密高速控制系统的需要。A basic mechanism of piezoelectric bimorph nozzle-flapper servo-valve was developed. The frequency characteristic and static displacement characteristic of the bimorph were obtained by the static tests for different base plate sizes and different bimorph thicknesses. The flow characteristic curves and pressure characteristic curves of the bimorph servo-valve were obtained by the tests on a servo-valve test bench. The experimental results show that nozzle-flapper servo-valve driven by piezoelectric bimorph is simply structure、quick response、high resolution ratio、little electromagnetic interference and easy control, so it can meet the need of modern sophisticate high-speed control system.

关 键 词：流体传动与控制 双压电晶片 喷嘴挡板式伺服阀 流量特性 压力特性 

分 类 号：TH137.33[机械工程—机械制造及自动化]