Paper Title:
Gearbox Condition Estimation Using Cyclo-Stationary Properties of Vibration Signal
  Abstract

The paper explores the cyclo-stationary properties of vibration signals for estimation of gearbox condition. The advantage of such approach may be clearly seen especially for so called multi-faults problem, i.e. for more than one faults that occurred in the system. In complex mechanical systems like multistage gearboxes, such situation may be often seen. Although this approach becomes more and more popular, it has been noticed that there is difficult to find examples highlighting its potential, especially for real industrial situations. In order to fill partially the gap, the paper deals with the multi fault detection in complex mechanical systems like multi-stage gearboxes: fixed axis and planetary. It has been discussed that during the operation in such machines many faults may appear simultaneously and the classical method like envelope analysis is difficult to use. The paper presents the use of cyclo-stationary properties of signals to identify and characterize sources of modulation. From Spectral Correlation Density Map or more precisely Spectral Coherence Map have been observed the number of sources with different properties of modulation. It is shown that the number of harmonics is important for a kind of fault extraction and interpretation. This approach has been applied to two, three and five stage gearboxes used in mining industry. Vibration signals received in industrial environment during normal operation of objects are considered. It has been also proposed the simple diagnostic feature to estimate the changes of condition with application to a planetary stage in a 5-stage gearbox.

  Info
Periodical
Key Engineering Materials (Volumes 413-414)
Edited by
F. Chu, H. Ouyang, V. Silberschmidt, L. Garibaldi, C.Surace, W.M. Ostachowicz and D. Jiang
Pages
471-478
DOI
10.4028/www.scientific.net/KEM.413-414.471
Citation
R. Zimroz, W. Bartelmus, "Gearbox Condition Estimation Using Cyclo-Stationary Properties of Vibration Signal", Key Engineering Materials, Vols. 413-414, pp. 471-478, 2009
Online since
June 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hui Li
Abstract:Gearbox vibrations are random cyclostationary signals which are a combination of periodic and random processes due to the machine’s rotation...
1012
Authors: Radoslaw Zimroz, Walter Bartelmus
Chapter 3: Diagnostics
Abstract:The paper shows application of an adaptive filter as a pre-processor for impulsive cyclic weak signal recovery from raw vibration signals...
250
Authors: Tomasz Barszcz, Radoslaw Zimroz, Jacek Urbanek, Adam Jabłoński, Walter Bartelmus
Chapter 3: Damage in Machineries
Abstract:The paper deals with the local damage detection in rolling element bearings in presence of a high level non-Gaussian noise. In many...
473