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http://dx.doi.org/10.5050/KSNVN.2006.16.5.479

Dual Servo Control for Aperture Type Near Field Storage Head  

Lee, Sung-Q (한국전자통신연구원)
Kim, Eun-Kyoung (한국전자통신연구원)
Park, Kang-Ho (한국전자통신연구원)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.16, no.5, 2006 , pp. 479-484 More about this Journal
Abstract
This paper presents an active control of the aperture type near-field storage head. In order to achieve a fast and accurate control, a dual servo control algorithm is applied. Based on the big difference in time constants of two actuators, they are used independently. With the combination fine and coarse actuator, the disk is rotated up to 10 rpm speed until the gap is controlled within 100 nm. From the experimental results, the feasibility and the performance of active dual servo gap control is proved.
Keywords
Dual Servo; Aperture; Active Gap Control; Near-field;
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