油气润滑三维结构ECT传感器电容极板优化设计  

Optimal Design of Capacitor Plate of Oil-air Lubricated Three-dimensional ECT Sensor

作　　者：宋春良 孙启国 常宗奎 SONG Chunliang;SUN Qiguo;CHANG Zongkui(Mechanical and Materials Engineering College,North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学机械与材料工程学院,北京100144

出　　处：《计算机测量与控制》2022年第2期314-320,共7页Computer Measurement &Control

基　　金：北京市属高等学校人才强教深化计划项(PHR201107109)。

摘　　要：针对小管径油气润滑ECT系统中传感器存在的重建图像轴向分辨率过低、采集信号微弱等问题,建立了该系统ECT电容传感器的三维结构优化模型,确定了电容极板间隔、单层电容极板长度和电容极板厚度3个重要结构参数的初值范围,采用正交实验的方法对传感器电容极板结构参数进行了优化;研究结果表明,优化后的传感器图像精度系数提高了131.20%。Aiming at the problems in the small diameter oil-air lubrication ECT system,the sensor reconstruction image is low axial resolution,and the acquisition signal is weak,the three-dimensional structure optimization model for the ECT capacitive sensor is established.The initial values of the spacing of capacitor plate,the length of single-layer capacitor plate and the thickness of capacitor plate are determined.Three important structural parameters is optimized by the orthogonal experiment method.The research results show that the image accuracy coefficient of the optimized sensor is increased by 131.20%.

关 键 词：油气润滑 三维ECT 电容极板结构参数 优化设计 图像精度 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]