西安交通大学机械制造系统工程国家重点实验室,西安,710049
网络首发:2017-06-10,
纸质出版:2017
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张西宁, 雷威, 李兵. 主分量分析和隐马尔科夫模型结合的轴承监测诊断方法[J]. 西安交通大学学报, 2017,51(6):1-7+109.
Bearing Fault Detection and Diagnosis Method Based on Principal Component Analysis and Hidden Markov Model[J]. 2017, 51(6): 1-7+109.
张西宁, 雷威, 李兵. 主分量分析和隐马尔科夫模型结合的轴承监测诊断方法[J]. 西安交通大学学报, 2017,51(6):1-7+109. DOI: 10.7652/xjtuxb201706001.
Bearing Fault Detection and Diagnosis Method Based on Principal Component Analysis and Hidden Markov Model[J]. 2017, 51(6): 1-7+109. DOI: 10.7652/xjtuxb201706001.
为了快速识别轴承的故障模式以及性能退化状态
提出了一种基于主分量分析和隐马尔科夫模型的轴承监测诊断方法。该方法首先提取了轴承振动信号的混合域故障特征集
使用主分量分析对混合域故障特征集降维
然后使用降维后的特征训练隐马尔科夫模型
最后用降维后的测试样本测试模型的性能
根据隐马尔科夫模型输出的对数似然概率
确定轴承故障模式以及轴承的性能退化状态。开展了不同状态滚动轴承振动测试实验
数据分析结果表明
提出的方法诊断准确率均能达到100%
相比基于补偿距离选择特征降维及隐马尔科夫模型诊断方法
最高将分类离散度提高123.74%
并且在轴承的性能退化实验中
提出的方法能在故障早期给出故障预警
证明了该方法的有效性和准确性。
Aiming at accurately and rapidly recognizing bearing fault pattern and performance degradation
a bearing fault detection and diagnosis method based on principal component analysis and hidden Markov model is proposed. The mixed domain fault feature set of bearing vibration signal
which corresponds to different bearing conditions
is extracted with principal component analysis to reduce the dimension of the feature set
then hidden Markov models are trained with part of the reduced feature set. The performances of trained models are verified with the remaining parts in this feature set. The bearing fault patterns are recognized and bearing performance degradation is assessed by comparing the logarithmic likelihood probability value of the hidden Markov models. Experiments under different bearing conditions are carried out
vibration signals are collected
and the correct classification rate of the proposed method reaches 100%. Compared with the compensation distance evaluation based feature dimension reducing technique and hidden Markov model
the classification dispersion of the proposed method is increased by 123.74%. In the bearing performance degradation monitoring
the proposed method exhibits better effectiveness and accuracy for early bearing degradation warning.
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贺王鹏,訾艳阳,陈彬强.冲击特征受控极小化通用稀疏表示及其在机械故障诊断中的应用.2016,50(4):94-99.[doi:10.7652/xjtuxb201604015]
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张浩,张进华,朱永生,等.外隔圈不平行度对轴承性能影响的数值分析.2014,48(8):86-90.[doi:10.7652/xjtuxb2014 08015]
陈汝刚,席光,陈韬.掌上透平弹性箔片动压气体轴承的试验研究.2014,48(7):1-4.[doi:10.7652/xjtuxb201407001]
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