双作用伺服螺旋阀性能分析研究  

Performance Study of the Double-acting Spiral Digital Valve

作　　者：郭剑波[1] 裴翔[1] 黄钰曌[1] 时梦[1] 阮健[1] 

机构地区：[1]特种设备制造与先进加工技术教育部重点实验室(浙江工业大学),浙江杭州310014

出　　处：《流体传动与控制》2012年第6期15-17,共3页Fluid Power Transmission & Control

摘　　要：传统2D数字伺服阀是一种采用单伺服螺旋机构将阀芯的旋转运动转换为阀芯轴向运动的阀。在采用2D数字阀作为先导阀的过程中,其在大行程下响应速度与现有国际先进水平还存有一定距离。为了提高2D数字阀在大行程的情况下的响应速度,引入双作用螺旋来实现功率放大。双作用螺旋伺服阀在2D阀的基础上于阀芯右侧台肩处增开一作用螺旋槽,使得左右敏感腔在压力差动变化,提高阀芯加速度,进而提高了响应速度。在建立数学模型之后,在MATLAB中对其性能进行了仿真。通过仿真,在21MPa的压力下,3mm的阶跃输出能够在2ms下实现。Original 2D digital valve is one kind of valve which can change the rotation motion of the spool into the direct motion with single spiral servo sector. When using 2D digital valve as the piloted valve,it comes out that original 2D digital valve’s response time is too slow that can’t compare favorably with advanced international technology. To improve the performance of the large stroke of digital piloted valve, this paper introduces double-acting spiral digital to achieve enlarging power. Adding another acting servo spiral in the right side of the spool of the original 2D digital valve, it results that the pressure difference between right and left sensitive chamber is quite largely changed in a few time, and simultaneously response time can be advanced. After establishing the mathematical mode, its performance is simulated in MATLAB. And after simulation, the response time is less than 2 ms under the pressure of 21 MPa and the displacement of 3 mm.

关 键 词：2D数字阀 双作用螺旋 性能分析 

分 类 号：TH137[机械工程—机械制造及自动化]