Development of a Poppet-Type Pneumatic Servo Valve
Development of a Poppet-Type Pneumatic Servo Valve
复制标题
提升阀式气动伺服阀的研制
DOI：
10.3390/app8112094
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
K. Kawashima
中科院分区：
文献类型：
--
作者：
T. Kanno;Takashi Hasegawa;Tetsuro Miyazaki;N. Yamamoto;Daisuke Haraguchi;K. Kawashima
在气动定位和力控制系统中，滑阀式伺服阀广泛用于获得快速响应和精确控制。然而，从这些阀的空气泄漏导致增加的能量消耗。为了解决这个问题，我们开发了一种三端口提升式伺服阀，以减少空气泄漏。所研制的气门由凸轮轴、两个节流孔、两个金属球和一个带有两个流道的气门室组成。金属球被流体推动，弹簧力关闭孔口。当凸轮旋转并推动球时，端口打开。设计凸轮形状和孔口尺寸以提供所需的流速。考虑到球上的流体力，确定了用于旋转凸轮轴的直流电动机的规格。测量了阀的静态和动态特性。通过实验确认了空气泄漏量为0.1L/min以下，空气泄漏量占最大流量的比例仅为0.37%。动态特性测量表明，该阀具有30 Hz的带宽。通过压力和位置控制实验证明了该阀的有效性。
In pneumatic positioning and force-control systems, spool-type servo valves are widely used for obtaining quick responses and precise control. However, air leakage from these valves results in increased energy consumption. To address this problem, we developed a three-port poppet-type servo valve to reduce air leakage. The developed valve consists of a camshaft, two orifices, two metal balls, and a housing with two flow channels. The metal ball is pushed by fluid, and spring force closes the orifice. The port opens when the cam rotates and pushes the ball. The cam shape and orifice size were designed to provide the desired flow rate. The specifications of the DC motor for rotating the camshaft were determined considering the fluid force on the ball. Static and dynamic characteristics of the valve were measured. We experimentally confirmed that air leakage was 0.1 L/min or less. The ratio of air leakage to maximum flow rate was only 0.37%. Dynamic characteristic measurements showed that the valve had a bandwidth of 30 Hz. The effectiveness of the valve was demonstrated through experiments involving pressure and position control.
DOI：
10.1016/j.precisioneng.2010.02.005
发表时间：
2010-07
影响因子：
3.6
作者：
K. Kawashima;Takeshi Arai;Kotaro Tadano;T. Fujita;T. Kagawa
通讯作者：
K. Kawashima;Takeshi Arai;Kotaro Tadano;T. Fujita;T. Kagawa