Time-Frequency Analysis of Slider Dynamics and the Effect of Lubricant

2002 ◽  
Author(s):  
Saurabh K. Deoras ◽  
Frank E. Talke
Keyword(s):  
Frequency Analysis ◽  
Disk Surface ◽  
Air Bearing ◽  
Lubricant Film Thickness ◽  
Lubricant Thickness ◽  
Laser Doppler Vibrometry ◽  
Time Frequency Analysis ◽  
Time Frequency ◽  
Pitch Frequency ◽  
Transient Events

The dynamics of pico sliders is investigated during scratch impact using laser Doppler vibrometry. Airbearing frequencies and damping of the pitch frequency are studied as a function of disk velocity for lubricant thickness values of 1.6nm, 1.0nm and 2.0nm. In addition, time-frequency analysis is used to study transient events during slider-scratch impact. The results indicate that the slider dynamics is not only a function of the design of the air-bearing, but also of the velocity and the characteristics of the lubricant film thickness on the disk surface.

Time-Frequency Analysis of Slider Dynamics and the Effect of Lubricant

2004 ◽  
Vol 126 (3) ◽  
pp. 559-564 ◽  
Author(s):  
Saurabh K. Deoras ◽  
Frank E. Talke
Keyword(s):  
System Identification ◽  
Frequency Analysis ◽  
Laser Doppler ◽  
Air Bearing ◽  
Lubricant Thickness ◽  
Laser Doppler Vibrometry ◽  
Time Frequency Analysis ◽  
Identification Methods ◽  
Time Frequency ◽  
Damping Coefficients

The dynamics of pico sliders is investigated during scratch impact using laser Doppler vibrometry. Air-bearing frequencies and damping of the pitch-2 frequency are studied as a function of disk velocity for lubricant thickness values of 1.6 nm, 1.0 nm and 2.0 nm. Time-frequency analysis is performed to study the instantaneous air-bearing frequencies. System identification methods are used to model the response of the slider after a scratch impact. The results indicate that the slider dynamics and the damping coefficients are affected by the disk velocity and lubricant thickness and also possibly by disk micro-waviness.

Time-Frequency Analysis of Partial Discharge Phenomena in SF6 gas using Wavelet Transform

1997 ◽  
Vol 117 (3) ◽  
pp. 338-345 ◽  
Author(s):  
Masatake Kawada ◽  
Masakazu Wada ◽  
Zen-Ichiro Kawasaki ◽  
Kenji Matsu-ura ◽  
Makoto Kawasaki
Keyword(s):  
Wavelet Transform ◽  
Frequency Analysis ◽  
Partial Discharge ◽  
Time Frequency Analysis ◽  
Time Frequency

Anti-Radiation-Missile detection based on parameterized time-frequency analysis

2010 ◽  
Vol 30 (11) ◽  
pp. 3108-3110
Author(s):  
Xiao-ming LIU ◽  
Jian-dong WANG ◽  
Xu-dong WANG
Keyword(s):  
Frequency Analysis ◽  
Time Frequency Analysis ◽  
Time Frequency
Sign in / Sign up

Export Citation Format

Share Document