摘要
在航空领域经常要利用飞机的振动信号来对其进行故障诊断,本文论证了故障诊断领域的经验模态分解(empirical mode decomposition,EMD)信号分解方法,分析了其存在的边缘效应,并结合镜像方法提出了利用其边缘信号来添加极值点的思想。从算例效果上看,本文所提出的方法计算速度快,算法简单,适应性强,能很好的抑制边缘效应。
Aircraft vibration signals are often used for failure diagnosis in aviation domain. This paper studies the EMD signal disassembling method in the field of failure diagnosis, analyzes its edge effect, and proposes the philosophy of adding the extreme value points using its edge signal in collaboration with mirror image method. For the point of view of example effect, the method proposed in this paper is fast in computation speed, simple in algorithm and very adaptable, and can refrain the edge effect in a better way.
出处
《教练机》
2014年第1期50-53,共4页
Trainer
