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

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.