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。
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.
出处
《噪声与振动控制》
CSCD
北大核心
2009年第5期66-69,共4页
Noise and Vibration Control
基金
科技部国际科技合作重点项目(2005DFA00110)
关键词
振动与波
DEMD
裂纹
碰摩
转子
故障诊断
vibration and wave
DEMD
crack
rub-impact
rotor
fault diagnosis
