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针对航空发动机润滑油路磨粒在线监测的静电传感器缺少特性参数与验证方法的问题,根据静电感应基本原理和传感器结构,提出相应的特性参数指标,利用环状探极感应模型进行仿真,并设计和搭建了静电传感器试验系统平台,通过试验对润滑油路静电传感器动态特性进行分析与验证。结果表明:所提特性参数指标可有效反映静电传感器的动态特性;长径比是环状润滑油路静电传感器的重要结构参数,传感器效率随长径比的增大而增大;传感器有效视场也随探极尺寸的增大而增大;所建平台可适用于实物静电传感器动态特性的分析与试验,且具有良好的可重复性。仿真和试验结果对润滑油路静电传感器的设计与应用具有重要的指导意义。
According to the basic principle of electrostatic induction and the structure of the sensor, the corresponding parameters of the parameters are proposed, and the ring-shaped probe model of the sensor is used to simulate and design the electrostatic sensor. Set up a static sensor test system platform, through the test of the dynamic characteristics of the lubricant road electrostatic sensor analysis and verification. The results show that the parameters of the characteristic parameters can effectively reflect the dynamic characteristics of the electrostatic sensor; the aspect ratio is an important structural parameter of the electrostatic sensor of the annular lubricating oil path, and the sensor efficiency increases with the increase of the aspect ratio; the effective field of view of the sensor But also increases with the increase of the probe size. The platform can be applied to the analysis and experiment of dynamic characteristics of physical electrostatic sensors with good repeatability. The simulation and test results have important guiding significance for the design and application of lubricant sensor.