测控技术2025，Vol.44Issue(10)：13-21,36,10.DOI:10.19708/j.ckjs.2025.09.249
基于监测用转速信号的低压转子故障诊断系统
Fault Diagnosis System for Low-Pressure Rotor Based on Self-Monitoring Rotational Speed Signal
摘要
Abstract
In order to identify the low-pressure rotor typical faults of aeroengines at an early stage,a new low-pressure rotor typical fault diagnosis method based on the dynamic rotational speed signals from the aeroengine self-monitoring system and the gradient boosting algorithm is proposed.A typical fault simulation test system for low-pressure rotors is established.By simulating typical fault conditions,the influence mechanisms of dynamic balance change faults and clearance change faults on the dynamic output signals of magneto-electricity rotation-al speed sensors is explored through experiment,revealing the correlation between these two types of typical faults and the changes in dynamic signal features of sensor,which verifies the feasibility of identifying low-pres-sure rotor typical faults by using the rotational speed signals from the aeroengine self-monitoring system,and makes real-time online fault diagnosis possible.Based on the proposed new fault diagnosis method,an early fault identification system for low-pressure rotor dynamic balance change fault and clearance change fault is de-veloped,and the fault data of two typical faults obtained by simulation test are further identified,with the recog-nition accuracy reaches 88％and 92％,respectively.This method provides a new theoretical basis and imple-mentation means for low-pressure rotor typical fault prediction and diagnosis of aeroengines,which can ensure the flight safety of aircraft.关键词
故障诊断/梯度提升算法/磁电转速动态信号/动平衡改变故障/间隙改变故障Key words
fault diagnosis/gradient boosting algorithm/dynamic signals of magneto-electricity rotational speed/dynamic balance change faults/clearance change faults分类
信息技术与安全科学引用本文复制引用
宋娜,齐贺阳,倪天琦..基于监测用转速信号的低压转子故障诊断系统[J].测控技术,2025,44(10):13-21,36,10.基金项目
航空科学基金(2022Z064044002) （2022Z064044002）
