DocumentCode
2388020
Title
Head-disk spacing control for an advanced rotary tester
Author
Huang, Xinghui ; Gokemeijer, Nils ; Bedillion, Mark ; Chu, Patrick
Author_Institution
Seagate Technol., Pittsburgh, PA
fYear
2008
fDate
11-13 June 2008
Firstpage
2999
Lastpage
3004
Abstract
This paper discusses head-disk spacing (HDS) control for an advanced rotary tester (ART). With active control of HDS, the ART enables testing of individual recording head sliders and evaluation of novel magnetic recording processes with great flexibility. In this paper, system characterization and servo control design for the ART are presented. Various hardware and design issues are addressed and the corresponding solutions are provided. Simulation and experimental results show that the nominal HDS can be controlled to be within 10 nm with a standard variation of 1.5 nm.
Keywords
magnetic storage; servomechanisms; ART; advanced rotary tester; head sliders; head-disk spacing control; magnetic recording; servo control design; Actuators; Assembly; Clamps; Feedback control; Magnetic heads; Magnetic recording; Sensor phenomena and characterization; Servosystems; Subspace constraints; Testing;
fLanguage
English
Publisher
ieee
Conference_Titel
American Control Conference, 2008
Conference_Location
Seattle, WA
ISSN
0743-1619
Print_ISBN
978-1-4244-2078-0
Electronic_ISBN
0743-1619
Type
conf
DOI
10.1109/ACC.2008.4586952
Filename
4586952
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