基于灰度击中击不中变换的故障特征提取方法  

Fault feature extraction method based on the gray-scale hit-or-miss transform

作　　者：韩立静[1] 徐金梧[1] 阳建宏[1] 黎敏[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083

出　　处：《北京科技大学学报》2012年第7期836-840,共5页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(50905013;50934007;51004013);高等学校博士学科点专项科研基金资助项目(20090006120007);冶金装备及其控制教育部重点实验室开放基金(2009A16);中央高校基本科研业务费专项(FRF--TP--09--014A;FRF--MP--09--009B;FRF--AS--09--008B)

摘　　要：提出了一种应用灰度击中击不中变换提取故障特征的方法.从待分析信号中指定若干个目标波形,由此计算得出击中击不中结构元素对,在每个采样点位置进行模式匹配,具有故障特征的波形段将具有较高的输出.应用于制氧厂驱动电机的碰摩信号和转子试验台的冲击信号,成功提取出削波特征和冲击特征.该方法与人工分析信号的思路接近,算法容易理解,可以作为从时域波形直接提取故障特征的一种有效方法.A method was proposed for fault feature extraction based on the gray-scale hit-or-miss transform. Several target wave- forms are chosen from the analyzed signal, and then hit-or-miss structure element pairs could be thereby calculated. Pattern matching is carried out at every sample point, and higher output is obtained when fault features occur. As the method was used to analyze the rub- impact signal of a driving motor and the impulse signal of a rotator test-bed in an oxygen manufactory, fault features were successfully extracted. The method is close to artificial thinking and easy to understand, so it is an effective method to extract fault features from a time domain waveform straightly.

关 键 词：故障诊断 特征提取 变换 波形分析 时域分析 数学形态学 

分 类 号：TH165.3[机械工程—机械制造及自动化]