液压控制阀（简称液压阀）按照阀芯的结构形式可分为：滑阀（或转阀）、球阀、锥阀、喷嘴挡板阀、射流管阀等几类。 喷嘴挡板阀的结构形式特别，它的挡板相当于阀芯，喷嘴相当于阀套（或阀座），常用于液压伺服控制系统中。
提出了平动式喷嘴挡板阀的概念，并对平动式喷嘴挡板阀的静态特性和液动力进行了分析。
A new concept of the translation nozzle baffle valve was presented, its static properties and flow force were analyzed.
提出了一种新型压电晶片型喷嘴挡板式电液伺服阀，并对其控制方法进行了研究。
A novel piezoelectric type nozzle flapper hydroelectric servo valve was developed and its control method was researched.
理论分析和实验结果表明：双喷嘴挡板电液伺服阀具有良好的流量-电流比例特性和小负载流量的控制能力。
Both the simulation and experimental results indicate that the dual flapper-nozzle servo valve has good flow-current characteristics and strong ability to control small flow rate.
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