基于局部同步拟合和窄带解调的行星传动齿根裂纹故障检测  

Tooth root crack fault detection of planetary transmission based on local synchronous fitting and narrowband demodulation

作　　者：华健翔 郭瑜[1] 陈鑫 樊家伟 尹兴超 HUA Jianxiang;GUO Yu;CHEN Xin;FAN Jiawei;YIN Xingchao(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650500

出　　处：《航空动力学报》2023年第12期3000-3008,共9页Journal of Aerospace Power

基　　金：国家自然科学基金(52165067);云南省重点领域科技计划项目(202002AC080001)。

摘　　要：为实现较少旋转圈数工况下的行星传动齿轮故障检测,本文提出一种基于局部同步拟合和窄带解调的行星传动齿根裂纹故障检测方法。该方法首先对行星齿轮箱振动信号进行角域重采样,再采用局部同步拟合方法估计出确定性分量;随后,由研究中提出的啮合谐波能量比最大准则自动选择包含齿轮故障信息最丰富的滤波阶次频带,并进行窄带解调;最后,通过幅值解调和相位解调揭示齿轮故障特征。实验和对比结果表明:该方法可以有效检测出齿根裂纹引起的周期性幅值和相位突变,且所需数据量较传统的加窗同步平均方法更少,在少转数工况下的齿根裂纹故障检测具有一定的优势。In order to realize the fault detection of planetary transmission gear under the condition of less rotation cycles,a fault detection method for tooth root crack of planetary transmission based on local synchronous fitting and narrowband demodulation was presented.Firstly,the angular domain resampling of the vibration signal was carried out,and then the local synchronous fitting was used to estimate the deterministic component;according to the maximum meshing harmonic energy ratio criterion proposed in the research,the filter order frequency band with the most abundant gear fault information was selected automatically and demodulated;finally,the gear fault characteristics were revealed by amplitude demodulation and phase demodulation.The experimental and comparative results showed that this method can effectively detect the periodic amplitude and phase mutation caused by the root crack,and the amount of data required was less than the traditional windowed synchronous average method.The root crack fault detection under the condition of few revolutions had certain advantages.

关 键 词：行星减速器 行星传动 局部同步拟合 啮合谐波能量比 窄带解调 

分 类 号：V240.2[航空宇航科学与技术—飞行器设计] TH17[机械工程—机械制造及自动化]