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3-4 电液伺服阀的性能、使用及维护电液伺服阀是电液伺服系统的关键元件,其性能对系统性能有重大影响。只有深入了解其性能,才能正确选用和使用伺服阀。一、电液伺服阀的基本特性伺服阀的特性包括静态和动态特性。流量型伺服阀应用最普遍,所以着重介绍它的特性。具有位置反馈的流量型伺服阀的功率滑阀位移正比于输入电流,所以其静特性曲线形状与滑阀放大器静特性相同,只要把阀芯位移换成输入电流便可以了。如图3-38所示。
3-4 Performance, Use and Maintenance of Electro-Hydraulic Servo Valves Electro-hydraulic servo valves are the key components of the electro-hydraulic servo system whose performance has a significant impact on system performance. Only in-depth understanding of its performance, the correct selection and use of servo valve. First, the basic characteristics of electro-hydraulic servo valve Servo valve features include static and dynamic characteristics. Flow-type servo valve is the most common application, so highlight its characteristics. The displacement valve of the servo valve with position feedback is proportional to the input current, so its static characteristic curve is the same as the static characteristics of the spool valve amplifier. Just replace the displacement of the spool with the input current. As shown in Figure 3-38.