电液伺服阀是电液控制系统的主要元件,它具有很高的功率放大系数,并能按电气驱动信号向量提供工作液流量和压力的模拟控制量。所评述的带有内部液压负反馈的电液伺服阀是两级的。阀设计成四种类型,其主要参数列于表1。主电流信号送至线圈,而线圈与其铁芯和两个铁淦氧的永磁铁组成力矩马达的磁路。此磁路按主信号作用于衔 Electrohydraulic servo valve is the main component of electro-hydraulic control system, it has a high power amplification factor, and can be driven by the electric signal vector to provide the working fluid flow and pressure analog control volume. The mentioned electro-hydraulic servovalve with internal hydraulic negative feedback is two-stage. Valve design into four types, the main parameters are shown in Table 1. The main current signal is sent to the coil, and the coil and its core and two ferrite magnets form the magnetic circuit of the torque motor. This magnetic circuit by the main signal on the title