A comparative study on time-frequency feature of cracked rotor by Wigner-Ville distribution and wavelet transform

被引：54

作者：

Zou, J ^{[1
]}

Chen, J ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Vibrat Shock & Noise, Shanghai 200030, Peoples R China

来源：

JOURNAL OF SOUND AND VIBRATION | 2004年 / 276卷 / 1-2期

关键词：

D O I：

10.1016/j.jsv.2003.07.002

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Based on the simple hinge crack model, the dynamic equation of transient response in a cracked rotor system is modelled; the numerical simulation solutions of the cracked rotor and the uncracked rotor are obtained from the model. The time-frequency features of the cracked and the uncracked rotors obtained by using the Wigner-Ville distribution are compared with those obtained by using the wavelet transform, the difference is presented. By simulation research, the sensitivity of the Wigner-Ville distribution and the wavelet transform to the stiffness variation is investigated; and the influence of the unbalance and the unbalance angle on the Wigner-Ville distribution and the wavelet transform is discussed. The time-frequency features are unique, which can be used as the criteria for identification of cracked rotor. (C) 2003 Published by Elsevier Ltd.

引用

页码：1 / 11

页数：11

共 21 条

[1]

[Anonymous], 1990, Applied Mechanics Reviews

[2]

Classen T. A. C. M., 1980, PHILIPS J RES, V35, P276

[3] The comparative study of different methods of spectral analysis of electrochemical oscillations [J].

Darowicki, K ;

Krakowiak, A ;

Zielinski, A .

ELECTROCHEMISTRY COMMUNICATIONS, 2002, 4 (02) :158-162

[4]

Dimarogonas A. D., 1983, ANAL METHODS ROTOR D

[5] Vibration of cracked structures: A state of the art review [J].

Dimarogonas, AD .

ENGINEERING FRACTURE MECHANICS, 1996, 55 (05) :831-857

[6] VIBRATION OF CRACKED SHAFTS IN BENDING [J].

DIMAROGONAS, AD ;

PAPADOPOULOS, CA .

JOURNAL OF SOUND AND VIBRATION, 1983, 91 (04) :583-593

[7] A SURVEY OF THE DYNAMIC BEHAVIOR OF A SIMPLE ROTATING SHAFT WITH A TRANSVERSE CRACK [J].

GASCH, R .

JOURNAL OF SOUND AND VIBRATION, 1993, 160 (02) :313-332

[8]

Gasch R., 1976, IMECHE C PUBLICATI C, V76, P123

[9]

Geng ZM, 1999, INTEGRATING DYNAMICS, CONDITION MONITORING AND CONTROL FOR THE 21ST CENTURY - DYMAC 99, P101

[10] A THEORY FOR MULTIRESOLUTION SIGNAL DECOMPOSITION - THE WAVELET REPRESENTATION [J].

MALLAT, SG .

IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, 1989, 11 (07) :674-693

← 1 2 3 →