Time-frequency analysis of tribological systems - part I: implementation and interpretation

被引：23

作者：

Menon, AK ^{[1
]}

Boutaghou, ZE ^{[1
]}

机构：

[1] Seagate Technol, Minneapolis, MN USA

来源：

TRIBOLOGY INTERNATIONAL | 1998年 / 31卷 / 09期

关键词：

time-frequency analysis; head-disk interface; air bearings;

D O I：

10.1016/S0301-679X(98)00055-3

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A novel technique adapting the time-frequency analysis has been utilized to characterize stationary and non-stationary signals from tribological interactions. This representation displays time, frequency, and signal magnitude to decipher signals emanating from such interactions. Short-time Fourier transform, Wigner, Coi-Williams, and Zhao-Atlas-Marks distributions are suited to represent stationary and non-stationary signals. Some of the most complex tribological phenomena involve head-disk interactions in magnetic recording systems. Examples drawn from practical head-disk interface tests are analyzed by using the fast Fourier transform algorithm to illustrate the dynamic features of various distributions. Time-frequency representation of output spectrums of laser doppler vibrometer (LDV), strain gage sensor, and acoustic emission (AE) sensor obtained from head-disk experiments giving evidence of stationary and non-stationary behavior are investigated. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：501 / 510

页数：10

共 22 条

[1] WIGNER DISTRIBUTION FUNCTION APPLIED TO OPTICAL SIGNALS AND SYSTEMS [J].