流体机械2017，Vol.45Issue(1)：26-29,14,5.DOI:10.3969/j.issn.1005-0329.2017.01.005
往复压缩机活塞杆的自激频率特征提取的研究
Research on Extracting the Self-excited Vibration Frequency of the Piston Rod of the Reciprocating Compressor
摘要
Abstract
A simplified model of the piston rod will be built.According to elastic beam bending vibration theory,the existence of the self-excited vibration frequency of the piston rod is deduced.Then to get the piston rod displacement signal by experiment.Meanwhile,the signal is de-noised with wavelet,and the real self-excited vibration frequency will be extracted from the de-noised signal.At last,comparing the theoretical value and real value to verify the existence of the self-excited vibration frequency of the piston rod.And this can provide reference for extracting the characteristic parameters used to diagnose the fault of the piston rod.关键词
往复压缩机/活塞杆/自激振动频率/小波降噪Key words
reciprocating compressor/piston rod/self-excited vibration frequency/wavelet de-noising分类
机械制造引用本文复制引用
李晓博,江志农,李欣,车熠全,徐丰甜,张进杰..往复压缩机活塞杆的自激频率特征提取的研究[J].流体机械,2017,45(1):26-29,14,5.基金项目
国家863计划项目(2014AA041806) （2014AA041806）
国家973计划项目(2012CB026000) （2012CB026000）
中央高校基本科研业务费专项资金资助项目(ZY1617) （ZY1617）
北京市科委地铁机电设备故障监测与智能诊断系统研制及示范应用项目(Z131100004113004) （Z131100004113004）
