基于小波变换的轴心轨迹特征提取  

Feature Extraction From the Orbit of the Center of a Rotor Based on Wavelet Transform

作　　者：段吉安[1] 张小栋[1] 

机构地区：[1]西安交通大学机械工程学院

出　　处：《振动．测试与诊断》1997年第1期29-32,共4页Journal of Vibration,Measurement & Diagnosis

摘　　要：回转机械的轴心轨迹包含着反映其运行状态的丰富信息，但由于各种噪声干扰严重，使轴心轨迹非常杂乱，难以从中得到有用信息。本文将小波变换用于提纯轴心轨迹，剔除干扰，提取故障特征。There are lots of messages in the orbit of the center of a rotor that show some operating states of the rotatory machine. However, for the serious interferences, it is so confused that useful messages can not be obtained from it. In this paper, the wavelet thansform is used to eliminate the interferences. The features of the fault are extracted easily, and satisfactory results are obtained.

关 键 词：小波变换 轴心轨迹 特征提取 回转机械 

分 类 号：TH113.21[机械工程—机械设计及理论] TN911.7[电子电信—通信与信息系统]