中文摘要：

为实现液压阀开口位置的精准测量,针对两线圈和三线圈的差动螺线管式电感位移传感器设计了两种不同传感器测量电路,实验比较其静、动态性能的优劣;并且对基于AD698的外围测量电路进行改进,从而提高位移检测的灵敏度。比较两种传感器的静态输出特性;在Valvistor型液压插装阀系统中采用AD698测量电路实时检测。当系统压力相同时,阀开口大小对传感器测量电路响应速度的影响;且系统压力越大阀动态响应速度越快,同时检测了主阀位移量与流量的关系。

英文摘要：

To achieve the accurate measurement of the hydraulic valve opening position, two different measurement circuits were designed respectively for two-coil and three-coil differential solenoid inductance displacement sensors. The pros and cons of their static and dynamic performances were compared. And the peripheral measurement circuit based on the AD698 was improved, so as to enhance the sensitivity of displacement detection. The different sensor measurement circuits were tested to compare the static output characteristics of these two types of sen sors. In valvistor hydraulic cartridge valve system, AD698 measurement circuit would be used to test the realtime dynamic detection. When the system pressure is maintained constant, the valve opening size influences the response speed of the sensor measuring circuit. The greater the pressure valve, the faster the dynamic response of the valve. The relationship between main valve displacement and flow rate is also detected.