高速开关阀先导控制的电液位置系统设计  

Design of Electro-hydraulic Position System Based onHigh Speed On-off Valve Pilot Control

作　　者：刘忠[1] 

机构地区：[1]湖南师范大学机电技术装备研究所,湖南长沙410081

出　　处：《制造技术与机床》2010年第9期76-77,共2页Manufacturing Technology & Machine Tool

基　　金：湖南省教育厅重点科研基金资助(2008A047)

摘　　要：针对一般液压系统控制的动力滑台的非线性特性,设计能满足高精度定位的液压控制系统。采用高速开关阀先导控制的阀控缸系统,通过改变控制信号的脉冲宽度调制率,可以控制液流的方向和流量,实现执行机构的无级调速,并可方便地实现平稳的加速和减速过程,降低系统冲击和噪声。According to the dynamic control hydraulic system of general nonlinear characteristics of slide, a precision positioning of the hydraulic control system is devised. Using high-speed on/off valves pilot control fluid cylinder system, it can control the direction of flow of fluid flow by changing pulse width modula- tion rate of the control signal, and can realize stepless speed control of electro-hydraulic position system. At the same time, it can easily realize smooth acceleration and deceleration process, can reduce the noise and impact of the system.

关 键 词：液压滑台 高速开关阀 先导控制 液控换向阀 电液位置系统 

分 类 号：TH137[机械工程—机械制造及自动化]