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《Journal of Vibration and Shock》 2007-01
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Zhao Xuezhi,Ye Bangyan(School of Mechanical Engineering,South China University of Technology,Guangzhou 510640)  
In amplitude spectrum of vibrating signal of bearings,there generally exists much disturbance of uniform distributed noise frequencies,which is difficult to be erased by common filter and has a bad influence on identification of bearing vibrating frequency.Through analysis by ART-2 principle,it's pointed out that signal feature information will be strengthened,but noise will be greatly suppressed by ART-2 under a condition that this signal feature information is superior to noise.According to this principle,the clear extraction algorithm for amplitude spectrum of bearing vibrating signal is realized.The example in which 13 bearing amplitude spectrums are processed shows that the bearing vibrating frequencies are clearly extracted and uniform distributed noise frequencies are fully suppressed in the modes formed by ART-2.Furthermore,the influence of ART-2 viglance coefficient on the clear extraction of bearing amplitude spectrum is studied and the explanation for this influence mechanism is given also.
【Fund】: 国家自然科学基金资助项目(批准号:50305005)
【CateGory Index】: TH133.33
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