A Gear Fault Diagnosis Method Based on BITD and Homomorphic Filtering Demodulation

China Mechanical Engineering ›› 2013, Vol. 24 ›› Issue (20): 2775-2780.

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A Gear Fault Diagnosis Method Based on BITD and Homomorphic Filtering Demodulation

Zhong Xianyou1,2;Zeng Liangcai2;Zhao Chunhua1,2;Chen Baojia1

1.Hubei Key Laboratory of Hydroelectric Machinery Design & Maintenance,China Three Gorges University,Yichang,Hubei,443002
2.Key Laboratory of Metallurgical Equipment and Control of Ministry of Education,Wuhan University of Science and Technology,Wuhan,430081

Online:2013-10-25 Published:2013-10-25
Supported by:
National Natural Science Foundation of China（No. 51075234, 51205230）

基于BITD和同态滤波解调的齿轮故障诊断方法

钟先友1,2;曾良才2;赵春华1,2;陈保家1

1.三峡大学水电机械设备设计与维护湖北省重点实验室,宜昌,443002
2.武汉科技大学冶金装备及其控制教育部重点实验室,武汉,430081

基金资助:
国家自然科学基金资助项目(51075234, 51205230)
National Natural Science Foundation of China（No. 51075234, 51205230）

Abstract

Abstract:

Aiming at the non-stationary characteristics of a gear fault vibration signals and the disadvantages of ITD,a gear fault diagnosis method combining improved ITD based on B-spline(BITD) and homomorphic filtering demodulation was proposed.In this approach,BITD method was applied firstly to decompose the vibration signals into a finite number of proper rotation components,then by using the correlation coefficients,the proper rotation(PR) components representing the fault information accurately were selected to extract the fault characteristics through the homomorphic filtering demodulation.The method was verified effectively by simulation signals and engineering examples of gear fault diagnosis.
intrinsic time-scale decomposition(ITD);homomorphic

Key words: filtering demodulation, correlation coefficient, gear fault diagnosis

摘要：

针对齿轮故障振动信号的非平稳特征以及本征时间尺度分解(ITD)方法的缺点,提出了B样条改进的本征时间尺度分解(BITD)和同态滤波解调相结合的故障诊断方法。首先采用BITD方法对齿轮振动信号进行分解，将其分解为若干个合理旋转分量之和,然后用相关系数筛选出最能表征故障信息的合理旋转分量进行同态滤波解调来提取故障特征。仿真信号与齿轮故障诊断工程实例分析验证了该方法的有效性。

关键词: 本征时间尺度分解, 同态滤波解调, 相关系数, 齿轮故障诊断

CLC Number:

Zhong Xianyou1,2;Zeng Liangcai2;Zhao Chunhua1,2;Chen Baojia1. A Gear Fault Diagnosis Method Based on BITD and Homomorphic Filtering Demodulation[J]. China Mechanical Engineering, 2013, 24(20): 2775-2780.

钟先友1,2;曾良才2;赵春华1,2;陈保家1. 基于BITD和同态滤波解调的齿轮故障诊断方法[J]. 中国机械工程, 2013, 24(20): 2775-2780.

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A Gear Fault Diagnosis Method Based on BITD and Homomorphic Filtering Demodulation

基于BITD和同态滤波解调的齿轮故障诊断方法

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