Resolution limits of timing-based servo schemes in magnetic tape drives

Author

Furrer, S. ; Pantazi, A. ; Cherubini, G. ; Lantz, M.

Author_Institution

IBM Res., Ruschlikon, Switzerland

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

In this work, we evaluate a set of experimental TBS patterns servo-formatted on a perpendicular barium-ferrite (BaFe) tape medium and quantify the achievable resolution in the lateral position estimate. We compare closed-loop position error measurements with resolution estimates based on a) the noise floor of the power spectral density of the lateral tape motion measured from the servo pattern during closed-loop track-following, and b) an analytical lower bound which depends on the servo readback signal shape and the signal-to-noise ratio.

Keywords

barium compounds; ferrites; magnetic recording noise; magnetic tapes; servomechanisms; BaFe₂O₄; analytical lower bound; closed-loop position error measurements; closed-loop track-following; lateral position estimate; lateral tape motion; magnetic tape drives; noise floor; perpendicular barium-ferrite tape medium; power spectral density; resolution estimates; resolution limits; servo pattern; servo readback signal shape; signal-to-noise ratio; timing-based servo schemes; Azimuth; Floors; Magnetic heads; Position measurement; Servomotors; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7157033

Filename

7157033