0
RESEARCH PAPERS

The Use of System Identification Methods to Evaluate the Effects of Slider-Disk Contacts and Disk Micro-Waviness on the Flying Height Modulations

[+] Author and Article Information
Saurabh K. Deoras1

Center for Magnetic Recording Research, Department of Mechanical and Aerospace Engineering, University of California, San Diego, San Diego, CA 92093-0401sdeoras@talkelab.ucsd.edu

Frank E. Talke

Center for Magnetic Recording Research, Department of Mechanical and Aerospace Engineering, University of California, San Diego, San Diego, CA 92093-0401ftalke@ucsd.edu

1

Address all correspondence to this author.

J. Tribol 128(2), 341-344 (Oct 02, 2005) (4 pages) doi:10.1115/1.2162551 History: Received February 25, 2004; Revised October 02, 2005

System identification methods have been used to study the response of a magnetic recording slider during contact with a scratch on the disk surface. In addition, the slider response was studied taking into account the effect of disk micro-waviness at various disk rotational speeds. The simulated slider response was compared with the measured slider dynamic behavior. Very good agreement was found between simulated and measured data. The flying height modulation of the slider, due to disk micro-waviness, was found to depend on disk velocity.

FIGURES IN THIS ARTICLE
<>
Copyright © 2006 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Schematic of experimental setup

Grahic Jump Location
Figure 2

Dimensions of the scratch as measured with an optical profilometer (WYKO)

Grahic Jump Location
Figure 3

Velocity and power spectrum of slider after scratch impact

Grahic Jump Location
Figure 4

Displacement signal: Various sections

Grahic Jump Location
Figure 5

Defining the system model

Grahic Jump Location
Figure 6

Comparison of measured output, one-step-ahead prediction and simulation

Grahic Jump Location
Figure 7

Bode diagram of the model

Grahic Jump Location
Figure 8

Impulse response for the slider using the model

Grahic Jump Location
Figure 9

Micro-waviness on the disk surface

Grahic Jump Location
Figure 10

Effect of disk micro-waviness at 3krpm(8.5m∕s)

Grahic Jump Location
Figure 11

Effect of disk micro-waviness at 6krpm(17m∕s)

Grahic Jump Location
Figure 12

Effect of disk micro-waviness at 10krpm(28.5m∕s)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In