辽宁工程技术大学 机械工程学院,阜新 123000
赵乃卓,女,1970年生,辽宁阜新人,硕士,副教授;主要研究方向为机械电子工程;E-mail:zhaonaizhuo@126.com。
收稿:2024-08-26,
修回:2024-09-10,
纸质出版:2026-05-15
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赵乃卓,廉嘉鹏,高永新. 综合ICEEMDAN-VME-MOMEDA算法的滚动轴承微弱故障特征提取研究[J]. 机械强度,2026,48(5):140-149.
ZHAO Naizhuo,LIAN Jiapeng,GAO Yongxin. Research on weak fault feature extraction of rolling bearings based on integrated ICEEMDAN-VME-MOMEDA algorithm[J]. Journal of Mechanical Strength,2026,48(5):140-149.
赵乃卓,廉嘉鹏,高永新. 综合ICEEMDAN-VME-MOMEDA算法的滚动轴承微弱故障特征提取研究[J]. 机械强度,2026,48(5):140-149. DOI: 10.16579/j.issn.1001.9669.2026.05.016.
ZHAO Naizhuo,LIAN Jiapeng,GAO Yongxin. Research on weak fault feature extraction of rolling bearings based on integrated ICEEMDAN-VME-MOMEDA algorithm[J]. Journal of Mechanical Strength,2026,48(5):140-149. DOI: 10.16579/j.issn.1001.9669.2026.05.016.
目的
2
针对强噪声背景下滚动轴承微弱故障特征难以准确提取的问题,提出一种综合改进自适应噪声完备集合经验模态分解(Improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise
ICEEMDAN)、变分模态提取(Variational Mode Extraction
VME)和多点最优最小熵解卷积(Multipoint Optimal Minimum Entropy Deconvolution Adjusted
MOMEDA)的故障特征提取算法,旨在提升微弱故障特征的识别精度。
方法
2
首先,以最小包络熵为目标,采用冠豪猪(Crested Porcupine Optimize
CPO)搜索算法优化ICEEMDAN算法的白噪声幅值权重与添加噪声次数,对原始振动信号进行分解,并以包络谱谱峰因子为指标,筛选出最佳本征模态分量;其次,以最小包络熵为目标,利用CPO算法优化VME算法的平衡参数与中心频率,提取该分量中最能表征故障信息的频段;然后,以包络谱谱峰因子为目标,通过CPO算法优化MOMEDA算法的滤波器长度与故障脉冲周期,对提取信号进行特征增强;最后,对增强后的信号进行包络解调分析,提取故障特征频率。
结果
2
经公开数据集验证,所提方法能清晰提取滚动轴承内圈故障频率(162.185 2 Hz)及其多倍频成分,包络谱中干扰频率被有效抑制;外圈故障特征频率(107.364 3 Hz)同样被准确识别。相比单独使用ICEEMDAN算法或VME算法,该算法能更有效地突显故障冲击脉冲,信噪比显著提升,为故障类型的准确识别提供了可靠依据。
Objective
2
To address the challenge of accurately extracting weak fault features of rolling bearings under strong background noise
a novel fault feature extraction method integrating improved complete ensemble empirical mode decomposition with adaptive noise (ICEEMDAN)
variational mode extraction (VME)
and multipoint optimal minimum entropy deconvolution adjusted (MOMEDA) was proposed. The aim is to enhance the identification accuracy of weak fault characteristics.
Methods
2
Firstly
with minimum envelope entropy as the objective
the crested porcupine optimizer (CPO) algorithm was employed to optimize the white noise amplitude weight and the number of added noise ensembles for ICEEMDAN. The original vibration signal was decomposed
and the optimal intrinsic mode function (IMF) was selected based on the maximum envelope spectrum peak factor. Secondly
guided by minimum envelope entropy
CPO optimized the balancing parameter and center frequency of VME to extract the frequency band containing the most critical fault information from the optimal IMF. Then
targeting the maximum envelope spectrum peak factor
CPO optimized the filter length and fault pulse period for MOMEDA to enhance the fault features of the extracted signal. Finally
envelope demodulation analysis was performed on the enhanced signal to extract fault characteristic frequencies.
Results
2
Validated by a public dataset
the proposed method clearly extracted the inner race fault frequency (162.185 2 Hz) of the rolling bearing and its multiples
with interference frequencies effectively suppressed in the envelope spectrum. The outer race fault characteristic frequency (107.364 3 Hz) is also accurately identified. Compared to using ICEEMDAN or VME alone
this method more effectively highlights fault-induced impulses
significantly improves the signal-to-noise ratio
and provides a reliable basis for accurate fault type identification.
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