CEEMD与Lempel-Ziv复杂度相结合的滚动轴承损伤程度评估方法

张雨琦; 邹金慧; 马军

doi:10.13433/j.cnki.1003-8728.20180027

CEEMD与Lempel-Ziv复杂度相结合的滚动轴承损伤程度评估方法

doi: 10.13433/j.cnki.1003-8728.20180027

张雨琦^1,2,
邹金慧^1,2, ,,
马军³

1.
昆明理工大学信息工程与自动化学院, 昆明 650500;
2.
云南省矿物管道输送工程技术研究中心, 昆明 650500;
3.
昆明理工大学机电工程学院, 昆明 650500

基金项目:

国家自然科学基金项目（61663017&61563024）与云南省科技计划项目（2015ZC005）资助

详细信息

作者简介:
张雨琦(1993-),硕士研究生,研究方向为机械故障诊断,188330610@qq.com

通讯作者:
邹金慧,副教授,553723956@qq.com

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- 文章访问数: 498
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- 被引次数: 0
出版历程
- 收稿日期: 2017-07-10
- 刊出日期: 2018-09-05

Damage Assessment Method for Rolling Bearings Combined CEEMD with Lempel-Ziv Complexity

Zhang Yuqi^1,2,
Zou Jinhui^{1,2
, ,},
Ma Jun³

1.
Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China;
2.
Engineering Research Center for Mineral Pipeline Transportation of Yunnan Province, Kunming 650500, China;
3.
College of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China

摘要

摘要: 针对不同损伤程度的滚动轴承其内、外圈故障在背景噪声影响下难以检测的问题，提出补充总体平均经验模态分解（Complementary ensemble empirical mode decomposition，CEEMD）与Lempel-Ziv复杂度（简称LZC指标）分析相结合的滚动轴承损伤程度评估方法。首先，对滚动轴承振动信号进行CEEMD分解，得到多个IMF（Intrinsic mode function）分量；然后，基于峭度最大准则选取有效IMF分量并计算其Lempel-Ziv复杂度综合指标；最后，根据Lempel-Ziv复杂度综合指标的变化规律判断滚动轴承的损伤程度，并基于6σ原则给出了不同损伤程度的滚动轴承内、外圈故障Lempel-Ziv复杂度取值区间。将该方法应用于滚动轴承的损伤程度评估，分析结果表明了该方法的有效性和可行性。
- 补充总体平均经验模态分解 /
- Lempel-Ziv复杂度 /
- 6σ原则 /
- 损伤评估 /
- 滚动轴承
Abstract: Aiming at the difficult detection of inner and outer ring faults in the rolling bearings with different damage degrees under the influence of background noise, a new evaluation method of damage degree based on the complementary ensemble empirical mode decomposition(CEEMD) and Lempel-Ziv complexity(LZC index for short) is proposed. First of all, vibration signal of fault rolling bearing is decomposed into a number of intrinsic mode function (IMF) components. Then, the effective IMF component is picked up based on the kurtosis maximum criterion so that the comprehensive index of Lempel-Ziv complexity can be calculated. Finally, the damage degree of the fault rolling bearings is judged based on the variation rule of Lempel-Ziv complexity, and the value interval of Lempel-Ziv complexity is determined reasonably among rolling bearings with different degrees according to 6 sigma principle. The experimental results of this method to damage degree evaluation of rolling bearings have shown the effectiveness and feasibility of the proposed method.
- complementary ensemble empirical mode decomposition (CEEMD) /
- Lempel-Ziv complexity /
- 6 sigma principle /
- rolling bearing /
- damage detection

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