Paper Title:
Diagnosis of Local Fault and Identification of Transient Fault Force in Rotating Machinery
  Abstract

Model based fault identification techniques can be used to diagnose local faults in rotating machinery; the equivalent loads that represent fault forces can be used to identify the fault location. But in some cases the equivalent loads smeared over many nodes, and make it hard to identify accurate fault location and transient fault force. In this paper, the fault location is identified using least squares fitting approach by the system’s vibration shape when the fault signal is periodic or quasi-periodic. And after the fault location is ascertained, the transient fault forces can be identified by transient residual vibration using simple matrix multiplications and additions. Numerical simulations and experiment on rotor to stator rub are used to test the method, which proved the efficiency of the method.

  Info
Periodical
Key Engineering Materials (Volumes 293-294)
Edited by
W.M. Ostachowicz, J.M. Dulieu-Barton, K.M. Holford, M. Krawczuk and A. Zak
Pages
475-482
DOI
10.4028/www.scientific.net/KEM.293-294.475
Citation
H. L. Yao, T. Yu, X. P. Li, Q. K. Han, B. C. Wen, "Diagnosis of Local Fault and Identification of Transient Fault Force in Rotating Machinery", Key Engineering Materials, Vols. 293-294, pp. 475-482, 2005
Online since
September 2005
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$32.00
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