Roller Bearing Fault Diagnosis Based on Nonlinear Redundant Lifting Wavelet Packet Analysis

被引：42

作者：

Gao, Lixin ^{[1
]}

Yang, Zijing ^{[1
]}

Cai, Ligang ^{[1
]}

Wang, Huaqing ^{[2
]}

Chen, Peng ^{[3
]}

机构：

[1] Beijing Univ Technol, Key Lab Adv Mfg Technol, Beijing 100124, Peoples R China

[2] Beijing Univ Chem Technol, Sch Mech & Elect Engn, Beijing 100029, Peoples R China

[3] Mie Univ, Grad Sch Bioresources, Tsu, Mie 5148507, Japan

来源：

SENSORS | 2011年 / 11卷 / 01期

基金：

中国国家自然科学基金;

关键词：

roller bearings; nonlinear; redundant lifting wavelet packet; fault diagnosis; TRANSFORMS; SCHEME;

D O I：

10.3390/s110100260

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学];

摘要：

A nonlinear redundant lifting wavelet packet algorithm was put forward in this study. For the node signals to be decomposed in different layers, predicting operators and updating operators with different orders of vanishing moments were chosen to take norm l p of the scale coefficient and wavelet coefficient acquired from decomposition, the predicting operator and updating operator corresponding to the minimal norm value were used as the optimal operators to match the information characteristics of a node. With the problems of frequency alias and band interlacing in the analysis of redundant lifting wavelet packet being investigated, an improved algorithm for decomposition and node single-branch reconstruction was put forward. The normalized energy of the bottommost decomposition node coefficient was calculated, and the node signals with the maximal energy were extracted for demodulation. The roller bearing faults were detected successfully with the improved analysis on nonlinear redundant lifting wavelet packet being applied to the fault diagnosis of the roller bearings of the finishing mills in a plant. This application proved the validity and practicality of this method.

引用

页码：260 / 277

页数：18

共 19 条

[1]

Anti-aliasing lifting scheme for mechanical vibration fault feature extraction [J].