2D气动数字伺服阀静态特性分析

利用一种伺服螺旋机构构成的二级气动数字伺服阀(简称“2D气动数字阀”)，简化了传统二级气动伺服阀的结构而性能却有较大提高。这种2D气动数字阀是一种闭环机构的结构设计，所以其稳性、快速性及精度、刚度等性能指标是相互制约的，要使这些性能指标得到同时提高比较困难。改变2D气动数字阀结构参数对上述各性能指标的影响是非线性、非单调递增或递减的，所以单纯地改变该阀的某一结构参数对改善其动、静态特性也是难以奏效的。因此，为了提高2D气动数字阀的综合性能，必须对其特性作进一步的仿真研究。主要就2D气动数字阀的静态特性予以MATLAB仿真分析。

Analysis on static characteristics of 2D pneumatic digital servo valve

By adopting a 2D pneumatic digital servo valve composed of servo spiral mechanism, conventional two-stage pneumatic servo valve structure is simplified while its performance is greatly enhanced. Since this 2D pneumatic digital valve is a closed loop mechanism, performance indexes such as stability, speediness, precision and rigidity restrict each other and it is contradictory to improve these performance indexes meantime. Influence on the above performance indexes by changing 2D pneumatic digital structure parameters is increased progressively or decreased progressively non-linearly, non-dully. Therefore, merely changing one certain structure parameter is ineffective on improving its dynamic and static performance. Hence, to improve the comprehensive performance of 2D pneumatic digital valve, further simulation research on its characteristics is necessary. This paper conducts Matlab simulation analysis on static property of 2D pneumatic digital valve.