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集成式轴承状态实时监测系统设计

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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.
Design of Integrated Bearing Condition Real-time Monitoring System
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.

high-speed bearingintegrated formreal-time monitoringhigh-precision

徐奥迪、高利霞、赵妍琛、李晨

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中北大学省部共建动态测试技术国家重点实验室

中国燃气涡轮研究院

西安航天动力研究所

高速轴承 集成式 实时监测 高精度

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

52275552HFZL2020CXY019YDZJSX2022C007pilab2206

2024

仪表技术与传感器
沈阳仪表科学研究院

仪表技术与传感器

CSTPCD北大核心
影响因子:0.585
ISSN:1002-1841
年,卷(期):2024.(4)
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