噪声与振动控制

›› 2009, Vol. 29 ›› Issue (5): 66-69.DOI: 10.3969/j.issn.1006-1355.2009.05.018

• 论文 • 上一篇    下一篇

《基于微分的经验模式方法在转子裂纹和碰摩故障诊断中的应用》

景蓓蓓，李鸿光   

  1. (上海交通大学机械系统与振动国家重点实验室 上海 200240)
  • 收稿日期:2009-02-19 修回日期:1900-01-01 出版日期:2009-10-18 发布日期:2009-10-18
  • 通讯作者: 景蓓蓓

《Fault Diagnoses of Cracked Rotor and Rub-Impact Rotor Based on DEMD Method》

JING Bei-bei ， LI Hong-guang   

  1. (State Key Laboratory of Mechanical system and Vibration, Shanghai Jiao Tong University, Shanghai, 200240)
  • Received:2009-02-19 Revised:1900-01-01 Online:2009-10-18 Published:2009-10-18
  • Contact: JING Bei-bei

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摘要：

介绍了基于微分的经验模式方法（DEMD），在Jeffcott裂纹转子模型和碰摩转子模型基础上，对裂纹和碰摩信号进行时间响应分析。结果表明，DEMD比传统的EMD方法呈现出更好的检测效果。研究工作为裂纹和碰摩转子故障诊断提供了一种工具。

关键词: 振动和波, DEMD, 裂纹, 碰摩, 转子, 故障诊断

Abstract:

The DEMD (Differentiation-based Empirical Mode Decomposition) is employed for fault diagnoses of cracked rotor and rub-impact rotor respectively. Firstly, the algorithm of DEMD is introduced. Then, the signals of cracked and/or rub-impact rotor are processed by using DEMD and EMD methods. The comparison of the results shows that DEMD method is better than the traditional EMD method for crack and/or rub-impact detection.

Key words: vibration and wave, DEMD, crack, rub-impact, rotor, fault diagnosiss

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