振动与冲击
振動與遲擊
진동여충격
JOURNAL OF VIBRATION AND SHOCK
2010年
2期
193-195,198
,共4页
马辉%李朝峰%轩广进%闻邦椿
馬輝%李朝峰%軒廣進%聞邦椿
마휘%리조봉%헌엄진%문방춘
时频分析%转子系统%重排小波尺度图%三维谱图%轴心轨迹
時頻分析%轉子繫統%重排小波呎度圖%三維譜圖%軸心軌跡
시빈분석%전자계통%중배소파척도도%삼유보도%축심궤적
time-frequency analysis%rotor system%reassigned wavelet scalogram%spectrum cascade%rotor shaft center trajectory
采用转子试验台对油膜失稳故障进行模拟,通过调整转盘厚度和转轴长度来改变试验参数,最后采集两组不同参数下的发生油膜失稳的振动信号,通过三维谱图、重排小波尺度图和轴心轨迹对其故障特征进行提取,得到发生油膜失稳故障的一些新的时频特征,并对其产生机理进行了分析,得出的结论可为油膜失稳故障诊断提供理论参考.
採用轉子試驗檯對油膜失穩故障進行模擬,通過調整轉盤厚度和轉軸長度來改變試驗參數,最後採集兩組不同參數下的髮生油膜失穩的振動信號,通過三維譜圖、重排小波呎度圖和軸心軌跡對其故障特徵進行提取,得到髮生油膜失穩故障的一些新的時頻特徵,併對其產生機理進行瞭分析,得齣的結論可為油膜失穩故障診斷提供理論參攷.
채용전자시험태대유막실은고장진행모의,통과조정전반후도화전축장도래개변시험삼수,최후채집량조불동삼수하적발생유막실은적진동신호,통과삼유보도、중배소파척도도화축심궤적대기고장특정진행제취,득도발생유막실은고장적일사신적시빈특정,병대기산생궤리진행료분석,득출적결론가위유막실은고장진단제공이론삼고.
Oil-film instability fault was simulated by using a rotor test rig, and vibration signals with two different groups of parameters were collected by adjusting thickness of disc and shaft length. Fault features were extracted by using spectrum cascades, reassigned wavelet scalograms and rotor shaft center trajectories. Some new interesting features were obtained by feature analysis and the fault mechanism corresponding to these features was explained. The results provided theoretical reference for diagnosing oil -film instability fault.