Improved air-gap control for SIL-based near-field recording system

Joong Gon Kim; Tae Hun Kim; Hyun Choi; Yong Joong Yoon; Jun Jeong; No Cheol Park; Hyunseok Yang; Young Pil Park

doi:10.1109/TMAG.2006.888426

Improved air-gap control for SIL-based near-field recording system

Joong Gon Kim, Tae Hun Kim, Hyun Choi, Yong Joong Yoon, Jun Jeong, No Cheol Park, Hyunseok Yang, Young Pil Park

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

We propose a gap servo method to reduce the overshoot in the near-field (NF) region. In general, we use a mode-switching servo which consists of approach, hand-over, and gap-control modes. However, there is a critical problem, such as an overshoot at the turning point from the approach mode to the hand-over mode, which may cause a collision between the SIL and the disk. In this paper, we propose an improved NF gap servo system using an exponential input in the approach mode which can reduce the overshoot and settling time of the mode-switching servo.

Original language	English
Pages (from-to)	811-813
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	43
Issue number	2
DOIs	https://doi.org/10.1109/TMAG.2006.888426
Publication status	Published - 2007 Feb

Bibliographical note

Funding Information:
This work was supported by the Yonsei Center for Opto-Mechatronics, designated as a Specialization Project by Yonsei University.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2006.888426

Cite this

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abstract = "We propose a gap servo method to reduce the overshoot in the near-field (NF) region. In general, we use a mode-switching servo which consists of approach, hand-over, and gap-control modes. However, there is a critical problem, such as an overshoot at the turning point from the approach mode to the hand-over mode, which may cause a collision between the SIL and the disk. In this paper, we propose an improved NF gap servo system using an exponential input in the approach mode which can reduce the overshoot and settling time of the mode-switching servo.",

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AU - Jeong, Jun

AU - Park, No Cheol

AU - Yang, Hyunseok

AU - Park, Young Pil

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Improved air-gap control for SIL-based near-field recording system

Abstract

Bibliographical note

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