水泵轴承振动信号的时频分析.pdf

2 0 0 1 9 32 5 彭桂兰　郭兰珂　王旭东　张国珍　陈贤源 : , , , : : T H 113. 1 : A - Time frequency Analysis of Vibrating Signals of Pump Bearings Peng GuilanWang Xudong ( Tarim University of A gricultural Reclamation) Guo Lanke Zhang Guo henChen Xiany uan ( Chongqing I nstitute of Post and Telecommunication) ( Southwest Agricultural Univ ersity) Abstract - The v ibrating signals collected fro m pump bear ing s by a velocity sensor w ere analy ed w ith short tim e Four ier transform ( ST FT ) , w avelet transform ( WT ) and w avelet packet transfor m ( WPT ) in the paper. T he r esults indicated that the W PT impr oved the distinguish ratio of - , . middle high frequency band ov ercomed the shortco ming of the ST FT and the WT It suits for featur e ex tr actio n f ault characteristic of bearing f ault diagnosis and can also pr omptly and accurately diagnose the f ault of a pump bearing. Key wordsPumps, Bearing , Vibration, Signal analysis , , , ( FFT ) , , 1 , 1 , , , , , , , 1 000 H : 2000 11 09 , 843300 , 400716 , 400716 48