Bi-LSTM神经网络用于轴承剩余使用寿命预测研究

被引:79
作者
申彦斌
张小丽
夏勇
杨吉
陈双达
机构
[1] 长安大学工程机械学院道路施工技术与装备教育部重点实验室
关键词
故障诊断; 滚动轴承; Bi-LSTM网络; 多传感器样本; 变长度输入;
D O I
10.16385/j.cnki.issn.1004-4523.2021.02.022
中图分类号
TH133.33 [滚动轴承]; TP183 [人工神经网络与计算];
学科分类号
082805 [农业机械化与装备工程]; 140502 [人工智能];
摘要
为有效获得轴承退化过程,设计一种改进损失函数的卷积自编码器(Convolutional Autoencode),使其可从多传感器采集的振动信号中提取轴承健康状态,避免了局部信息的丢失,同时得到了更深层次的故障特征。提出了一种基于双向长短时记忆网络(Bi-directional LSTM)的循环神经网络结构,利用其对时间序列数据的处理能力,学习轴承在实际工作过程中的退化规律,实现对轴承的剩余使用寿命预测。此外,为进一步提升模型的预测准确率及泛化能力,设计接收随机长度样本的Bi-LSTM网络进行训练,使得模型接收连续数据而不是分段的数据。最后,使用NASA的IMS数据集进行了验证和对比试验,得出本文所构建的CE-Bi-LSTM轴承健康预测模型相较于其他方法具有更准确的预测能力。
引用
收藏
页码:411 / 420
页数:10
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