作者：黄慧杰¹, 孙百祎², 任学平¹, 刘淮全²

作者单位：1. 内蒙古科技大学机械工程学院, 内蒙古 包头 014010;
2. 山东交通职业学院泰山校区, 山东 泰安 271000

关键词：滚动轴承;早期故障;自适应白噪声的完备总体经验模态分解;1.5维谱

摘要：

针对滚动轴承早期故障难以识别的问题，提出一种自适应白噪声的完备总体经验模态分解（complete ensemble empirical mode decomposition with adaptive noise，CEEMDAN）和1.5维谱相结合的滚动轴承故障诊断方法。该方法首先运用CEEMDAN对振动信号进行分解，得到一系列IMF分量，然后根据峭度准则以及相关系数准则提取一个包含主要故障信息的IMF分量，最后对提取的IMF分量进行1.5维谱分析，通过分析谱图中突出成分以确定轴承故障类型。利用仿真信号和工程实验数据对该方法进行分析验证，所得出结果的谱图均比用单一方法得出的谱图清晰，充分证明该方法在滚动轴承早期故障诊断中的优势。

Early fault diagnosis of rolling bearing based on CEEMDAN and 1.5 dimension spectrum
HUANG Huijie¹, SUN Baiyi², REN Xueping¹, LIU Huaiquan²
1. Institute of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;
2. Taishan Campus of Shandong Transport Vocational College, Taian 271000, China
Abstract: In order to solve the problem that early failure of rolling bearings information are difficult to identify, a new method of rolling bearing fault diagnosis based on complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) and 1.5 dimension spectrum is proposed. Firstly, the CEEMDAN method is used to decompose the vibration signal, a signal of a finite number of intrinsic mode component (IMF) is obtained. Then, according to the kurtosis criterion and correlation coefficient criterion of each component, a IMF component containing important fault information is extracted. Finally, the extracted IMF component is analyzed by 1.5 dimension spectrum, fault type of bearing can be determined by analyzing the prominent components in 1.5 dimension spectrum. The method is analyzed and verified by simulation signal and engineering experiment data. The spectrum results obtained are much clearer than those obtained by single method.The advantages of this method in the early fault diagnosis of rolling bearing are fully proved.
Keywords: rolling bearings;incipient faults;CEEMDAN;1.5 dimension spectrum
2019, 45(2):151-156  收稿日期: 2017-10-23;收到修改稿日期: 2018-02-01
基金项目: 国家自然科学基金项目（51565046）；内蒙古自治区高等学校科学研究项目（NJZY16154）
作者简介: 黄慧杰(1995-),男,山西运城市人,硕士研究生,专业方向为机械设备故障诊断及状态检测
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