角度补偿同步平均的二级行星齿轮箱行星轮故障特征提取方法  

Angle compensation synchronous averaging for fault feature extraction of planet gear in two-stage planetary gearbox

作　　者：晏云海 郭瑜[1] YAN Yun-hai;GUO Yu(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650550,China)

机构地区：[1]昆明理工大学机电工程学院,云南昆明650550

出　　处：《振动工程学报》2024年第5期896-902,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(51675251);国家重点研发计划资助项目(2018YFB1306103);云南省科技重大专项资助项目(202002AC080001)。

摘　　要：加窗同步平均克服了行星齿轮传动引起的振动传递路径时变性问题,可有效应用于单级行星齿轮箱齿轮故障特征提取。但二级行星齿轮箱存在两级行星结构共用传动轴引起的振动耦合问题,该方法不易有效提取第一级行星轮的故障特征,为此本文提出一种角度补偿同步平均的二级行星齿轮箱行星轮故障特征的提取方法。通过等角度重采样消除转速波动的影响;采用角度补偿同步平均分离重采样振动中存在的第二级太阳轮的干扰,并通过差运算将其从重采样振动中消除;提取残余振动的包络信号;通过加窗同步平均构建第一级行星轮的合成包络信号,并采用包络同步平均提取第一级行星轮的故障特征。通过二级行星齿轮箱实验台实测信号分析验证,所提方法能够有效地提取第一级行星轮的故障特征。The windowed synchronous averaging(WSA) is commonly applied to the fault detection of planetary structures since it can overcome the problem of time-varying transfer path.However,it is unsuitable for the fault feature extraction of the planet gear at the first stage in a two-stage planetary gearbox due to the vibration coupling caused by the two-stage planetary structures.To address the issue,an angle compensation synchronous averaging scheme is proposed in this paper.In the proposed scheme,the speed fluctuation of the observed vibration is eliminated by equal-angle resampling.The second-stage interference from the sun gear at the second stage is constructed by applying the synchronous averaging to the resampled vibration based on the angle compensation strategy.The second-stage interference is removed by subtracting it from the resampled vibration.The corresponding envelope signal is extracted by the envelope analysis from the residual vibration.The WSA is utilized to construct the synthetic envelope signal of the planet gear at the first stage.The envelope synchronous averaging is used to suppress the asynchronous interference and extract the fault feature of the planet gear.According to the experimental results of a two-stage planetary gearbox test rig,the effectiveness of the proposed method is verified.

关 键 词：故障特征提取 二级行星齿轮箱 加窗振动分离 包络分析 角度补偿同步平均 

分 类 号：TH165.3[机械工程—机械制造及自动化] TH132.425