机械科学与技术2012，Vol.31Issue(8)：1261-1264,4.
基于数学形态学的振动信号降噪和解调方法研究
Method of De-noising and Modulation in Vibration Signal Based on Mathematical Morphology
朱云博 1冯广斌 2孙华刚 2李顺德3
作者信息
- 1. 军械技术研究所,石家庄050003／军械工程学院,石家庄050003
- 2. 军械技术研究所,石家庄050003
- 3. 军械工程学院,石家庄050003
- 折叠
摘要
Abstract
During the fault diagnosis in gearbox, in order to achieve de-noising and demodulation simultaneously in the fault gear vibration signal, two different morphological operators are designed based on the mathematical morphological theory. For different signal processing purpose, the vibration signal can be de-noised and modulated with morphological operators. The procession results of simulated signal and real gear crack fault signal show that the combined operation can filter the impulse and stochastic noises, and improve signal-to-noise ratio, while the difference operation can extract the demodulated impulses in the signal, and reveal impulsion feature in fault signal. The proposed method is simple and fast in computation as only addition and subtraction operators are need. This method can be applied to the singal processing in online diagnosis for gearbox.关键词
故障诊断/降噪/解调/数学形态学/冲击特征Key words
fault diagnosis/de-noising/demodulation/mathematical morphology/impulsion feature分类
机械制造引用本文复制引用
朱云博,冯广斌,孙华刚,李顺德..基于数学形态学的振动信号降噪和解调方法研究[J].机械科学与技术,2012,31(8):1261-1264,4.
