集成式轴承状态实时监测系统设计  

Design of Integrated Bearing Condition Real-time Monitoring System

作　　者：徐奥迪 高利霞[2] 赵妍琛 李晨[1] XU Aodi;GAO Lixia;ZHAO Yanchen;LI Chen(State Key Laboratory of Dynamic Measurement Technology,North University of China;China Gas Turbine Establishment;Xi'an Aerospace Propulsion Institute)

机构地区：[1]中北大学省部共建动态测试技术国家重点实验室 [2]中国燃气涡轮研究院 [3]西安航天动力研究所

出　　处：《仪表技术与传感器》2024年第4期43-47,共5页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(52275552);中国航空发动机集团产学研合作项目(HFZL2020CXY019);中央引导地方科技发展基金项目(YDZJSX2022C007);天津大学精密测量技术与仪器国家重点实验室项目(pilab2206)。

摘　　要：为了满足航空发动机高速轴承状态实时监测的迫切需求,研制了一种基于以太网传输的集成式多通道同步在线监测系统。系统集成了电涡流传感器前置器和IEPE加速度支持单元,满足了35~4400 MHz范围内感应探头激励和IEPE供电需求,实现转速和振动传感信号高精度采集,并通过硬件抗混叠滤波和滑动滤波算法抑制轴承的杂散干扰。试验结果表明:系统在0~9000 r/min范围内保持架转速测量误差小于2 r/min,相对误差小于0.1%,振动灵敏度为200 mV/g,实时性能好,实现轴承状态的实时在线监测。To meet the urgent needs of real-time monitoring of aero-engine high-speed bearing condition,an integrated multi-channel synchronous online monitoring system based on Ethernet transmission was developed.The system integrated the eddy current sensor front-end and IEPE acceleration support unit and met the needs of induction probe excitation and IEPE power supply at 35~4400 MHz,realizing high-precision acquisition of speed and vibration sensing signals.It suppressed the stray interference of bearings through hardware anti-aliasing filtering and sliding filtering algorithms.The results show that the measurement error of the cage speed is less than 2 r/min in 0~9000 r/min,with the relative error less than 0.1%and the vibration sensitivity 200 mV/g.The real-time online monitoring of the bearing state is realized with excellent real-time performance.

关 键 词：高速轴承 集成式 实时监测 高精度 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]