基于EEMD与Hilbert解调技术的行星变速器故障诊断  

Research on the meshing fault diagnosis of the planetary transmission based on EEMD and Hilbert demodulation

作　　者：董少君 宋磊[2] 马超[1] 栾忠权[1] 黄竞楠 DONG Shaojun;SONG Lei;MA Chao;LUAN Zhongquan;HUANG Jingnan(The Key laboratory of Modern Measurement and Control Technology,Beijing Information Science&Technology University,Beijing 100192,China;Key Laboratory of Space Utilization,Chinese Academy of Sciences,Beijing 100094,China)

机构地区：[1]北京信息科技大学现代测控技术教育部重点实验室,北京100192 [2]中国科学院太空应用重点实验室,北京100094

出　　处：《北京信息科技大学学报（自然科学版）》2019年第6期8-13,共6页Journal of Beijing Information Science and Technology University

基　　金：中国科学院太空应用重点实验室开放基金资助(LSU-KFJJ-2018-07)

摘　　要：针对行星变速器运行过程中监测信号解调特效的问题,提出了一种结合集合经验模态分解(EEMD)与Hilbert解调技术的行星变速器故障诊断方法。通过采集试验台振动信号进行EEMD分解,得到其本征模态函数(IMF),再对IMF分量进行功率谱分析,根据频谱中的主要频率成分即能量值较大者进行再次分析。在此基础进行带通滤波及包络解调分析得到其调制信号,结合调制信号的频率成分实现故障定位,确定系统中的故障部件或部位。结果表明故障特征频率得到有效提取,实现了行星变速器的故障诊断。To solve the problem of monitoring signal demodulation effects during the operation of planetary transmission, a planetary transmission fault diagnosis method combining global average empirical mode decomposition(EEMD) and Hilbert demodulation technology is proposed. The eigenmode function(IMF) is obtained by collecting the vibration signal of the test bench, and then the power spectrum analysis is performed on the IMF component, and the main frequency component in the spectrum, namely, the one with larger energy value, is analyzed again. On this basis, band-pass filtering and envelope demodulation analysis are performed to obtain the modulated signal. The frequency component of the modulated signal is used to realize fault location, and the faulty component or part in the system is determined. The results show that the fault characteristic frequency is effectively extracted, and the fault diagnosis of the planetary transmission is realized.

关 键 词：行星变速器 EEMD Hilbert解调 故障诊断 

分 类 号：TH132[机械工程—机械制造及自动化] TP391[自动化与计算机技术—计算机应用技术]