MR head effects on PES generation: simulation and experiment

Author

Sacks, Alexei H. ; Messner, William C. ; Bodson, Marc

Author_Institution

Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA

Volume

32

Issue

3

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

1773

Lastpage

1778

Abstract

Two-dimensional linear, time-invariant simulation results of a magnetoresistive (MR) head readback response for Position Error Signal (PES) generation are compared with experimental data. Split-burst amplitude and null patterns are considered for the off-track study. Micro-track profiling results for use in the simulations are also presented. The simulations capture the on-track response of the MR head, although the predicted off-track response is degraded. The simulated PES predicts more non-linearity with off-track displacement than the experimental data indicates. The results suggest that more advanced simulation techniques are required for servo channel design and prediction

Keywords

magnetic heads; magnetoresistive devices; position control; servomechanisms; simulation; magnetoresistive head readback response; micro-track profiling; nonlinearity; null patterns; off-track displacement; off-track response; on-track response; position error signal generation; servo channel design; split-burst amplitude; two-dimensional linear time-invariant simulation; Amplitude estimation; Cities and towns; Data storage systems; Degradation; Demodulation; Magnetic heads; Magnetoresistance; Predictive models; Servomechanisms; Signal generators;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.492864

Filename

492864