集成式轴承状态实时监测系统设计
Design of Integrated Bearing Condition Real-time Monitoring System
徐奥迪 1高利霞 2赵妍琛 3李晨1
作者信息
- 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
- 折叠
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35～4 400 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 0～9 000 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.
Abstract
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 cur-rent sensor front-end and IEPE acceleration support unit and met the needs of induction probe excitation and IEPE power supply at 35～4 400 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 0～9 000 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Key words
high-speed bearing/integrated form/real-time monitoring/high-precision引用本文复制引用
基金项目
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)
出版年
2024
NETL
NSTL
维普
万方数据