| IDENTIFICATION OF CRACKED ROTOR BY WAVELET TRANSFORM |
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| 作者姓名： | 邹剑 陈进 蒲亚鹏 |
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| 作者单位： | State Key Lab. of Vibration，Shock & Noise，Shanghai Jiaotong Univ.，Shanghai 200030，China |
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| 基金项目： | National Fundam ental Foundation of
Research and Developm ent (No.G19980 2 0 3 2 1) |
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| 摘 要： | Introduction Dynamicbehaivoranalysis of the cracked rotorhas been investigated since 1 960 's,and now the re-searches on the faultdiagnosis and condition moni-toring of cracked rotor are paid more and more at-tentions because of its importance in industry.in1 970 's,Gasch proposed a simple hinge crack modelthat was very good for the representation of thecyclic stiffness variables and the stability lim-its1,2 ] . With fracture mechanics,Dimarogonas andhis colleagues modelled the crack as a …
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IDENTIFICATION OF CRACKED ROTOR BY WAVELET TRANSFORM |
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| ZOU Jian,CHEN Jin,PU Ya peng.IDENTIFICATION OF CRACKED ROTOR BY WAVELET TRANSFORM[J].Journal of Shanghai Jiaotong university,2002,7(2):166-170. |
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| Authors: | ZOU Jian CHEN Jin PU Ya peng |
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| Institution: | State Key Lab. of Vibration, Shock & Noise, Shanghai Jiaotong Univ., Shanghai 200030, China |
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| Abstract: | The dynamic equation of cracked rotor in rotational frame was modelled, the numerical simulation solutions of the cracked rotor and the uncracked rotor were obtained. By the wavelet transform, the time frequency properties of the cracked rotor and the uncracked rotor were discussed, the difference of the time frequency properties between the cracked rotor and the uncracked rotor was compared. A new detection algorithm using wavelet transform to identify crack was proposed. The experiments verify the availability and validity of the wavelet transform in identification of crack. |
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| Keywords: | wavelet transform cracked rotor uncracked rotor identification |
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