Proceedings of JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment : IIP/ISPS joint MIPE
Online ISSN : 2424-3132
セッションID: HDI-13
会議情報
HDI-13 INVESTIGATION OF MAGNETIC HEAD TOUCH DOWN BEHAVIOR ON WAVY SURFACE(Head/Disk Interface and Tribology IV,Technical Program of Oral Presentations)
Lizhi SUZhisheng DENGRingo Wing Kwong NG
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With recording density keeps to increase in hard disk drives, spacing between magnetic head and media will become smaller and smaller. But, there is a limitation which will hinder spacing become even small. Therefore, DFH (Dynamic Flying Height) is used and plays a very important role on higher recording density, as DFH can achieve smaller spacing without loss of tribological reliability in the head disk interface. The DFH control is migrating from constant power to constant spacing (back off). In order to decide the back off clearance between the magnetic head and the media, the head must be touched down to the media by head actuator. However, media is not an absolute flat surface. Media run-out will affect the touch down behavior, e.g. slider dynamics, in DFH implementation. In this paper, we investigated DFH touch down behavior on wavy surface, e.g. media with run-out.
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© 2009 一般社団法人 日本機械学会
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