1.北京化工大学高端压缩机及系统技术全国重点实验室
2.中国石油天然气股份有限公司长庆油田分公司 工程技术监督中心
3.国家管网西部管道有限公司
4.中石化(天津)石油化工有限公司
第轩,生于2001年,2025年毕业于北京化工大学,获硕士学位,现从事旋转机械健康状态评价相关研究工作。地址:(100029)北京市朝阳区。email:523504914@qq.com。
王庆锋,博士,教授。email:wangqf2422@163.com。
收稿:2025-04-27,
修回:2026-03-28,
录用:2025-09-12,
纸质出版:2026-09-25
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第轩,肖旺,山崧,等.多尺度特征融合和Bi-ResLSTM网络的轴承剩余寿命预测方法[J].石油机械,2026,54(9):1-9.
Di Xuan,Xiao Wang,Shan Song,et al.Remaining useful life prediction method for bearings based on multi-scale feature fusion and Bi-ResLSTM[J].China Petroleum Machinery,2026,54(9):1-9.
第轩,肖旺,山崧,等.多尺度特征融合和Bi-ResLSTM网络的轴承剩余寿命预测方法[J].石油机械,2026,54(9):1-9. DOI: 10.12473/CPM.202504090.
Di Xuan,Xiao Wang,Shan Song,et al.Remaining useful life prediction method for bearings based on multi-scale feature fusion and Bi-ResLSTM[J].China Petroleum Machinery,2026,54(9):1-9. DOI: 10.12473/CPM.202504090.
滚动轴承是旋转机械核心承载部件,对其退化趋势精准评估与剩余寿命预测是设备视情运维的关键支撑。现有数据驱动的故障预测方法普遍存在健康指标构建难度大、长时序退化特征挖掘不充分、剩余使用寿命预测精度不足等缺陷,难以适配工业现场复杂噪声、样本稀缺的监测工况。针对以上技术痛点,提出一种融合多尺度特征筛选与双向残差长短期记忆网络(Bi-ResLSTM)的滚动轴承剩余寿命预测方法。对设备采集的振动信号开展多尺度混合特征提取,借助动态关联窗口分析筛选高敏感特征,再通过深度去噪自编码器(DDA)完成多源特征降噪融合,以此构建能够直观反映轴承退化状态的健康指标曲线;依托自编码器的重构误差识别轴承早期故障发生时刻,精准确定寿命预测的起始时间点;将构建完成的健康指标时序曲线输入Bi-ResLSTM网络,深度挖掘指标随时间推移的劣化演变规律,结合设备预设失效阈值完成轴承剩余使用寿命定量计算。采用公开标准轴承数据集开展对比验证试验,试验结果表明,相比传统粒子滤波寿命预测算法和基础单层长短期记忆网络(LSTM)预测算法,所提方法整体预测误差百分比分别下降了15.57和5.75个百分点,表明其具有更高的预测精度和抗干扰鲁棒性能;充分证实了该预测方案即使在现场可获取训练故障样本有限的场景下,依旧能够维持稳定且准确的预测效果。研究结果可为工业旋转机械故障预测与预防性运维工作开展提供技术参考。
Rolling bearing is the core load-bearing component of rotating machinery, and accurate assessment of its degradation trend and prediction of its remaining useful life (RUL) provide key supports for condition-based operation and maintenance of equipment. Existing deep learning-driven fault prediction frameworks generally suffer from difficulties in defining health indicators, insufficient mining of long-term degradation features, and inadequate RUL prediction accuracy, making them poorly suited to industrial monitoring conditions with complex noise and scarce samples. To address these technical weaknesses, a RUL prediction method for rolling bearings was proposed by integrating multi-scale feature screening and a bidirectional residual long short-term memory (Bi-ResLSTM) network. The method consists of three main procedures. First, multi-scale hybrid features are extracted from the vibration signals collected from the equipment, highly sensitive features are screened by dynamic correlation window analysis, and multi-source feature denoising and fusion are completed by using a deep denoising autoencoder (DDA), so as to construct a health indicator curve that intuitively reflects the degradation state of the bearing. Second, the reconstruction error of DDA is used to identify the occurrence time of early bearing faults and accurately determine the starting point of RUL prediction. Finally, the constructed health indicator time-series curve is fed into the Bi-ResLSTM network to deeply capture the degradation evolution pattern of the indicator over time, and the RUL of the bearing is quantitatively calculated according to the pre-specified failure threshold of the equipment. The experimental results show that, compared with the traditional particle filter life prediction algorithm and the basic single-layer long short-term memory (LSTM) prediction algorithm, the overall prediction percentage error of the proposed method decreases by 15.57 and 5.75 percentage points, respectively, indicating that it has higher prediction accuracy and anti-interference robustness. It is fully demonstrated that the proposed scheme can deliver stable and accurate prediction even when only limited training samples of faults are available on site, and has high engineering application potential for fault prediction and preventive maintenance of industrial rotating machinery.
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