Flying Height Control for Near-Field Optical Disk Drives Using Piezoelectric Bender

碩士 === 國立交通大學 === 機械工程系 === 90 === Based on near-field optics, a flying pickup head is employed in optical disk drives, so as to increase data storage capacity and density. However, it remains to enhance flying height control performance of the pickup head. This study attaches a piezoelectric bender...

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Bibliographic Details
Main Authors:	Po-Ching Liu, 劉柏清
Other Authors:	Tzong-Shi Liu
Format:	Others
Language:	en_US
Published:	2002
Online Access:	http://ndltd.ncl.edu.tw/handle/18573373631365049540

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spelling	ndltd-TW-090NCTU04890622015-10-13T10:06:24Z http://ndltd.ncl.edu.tw/handle/18573373631365049540 Flying Height Control for Near-Field Optical Disk Drives Using Piezoelectric Bender 使用壓電彎片於近場光碟機的飛行高度控制 Po-Ching Liu 劉柏清碩士國立交通大學機械工程系 90 Based on near-field optics, a flying pickup head is employed in optical disk drives, so as to increase data storage capacity and density. However, it remains to enhance flying height control performance of the pickup head. This study attaches a piezoelectric bender to the pickup head. System identification is carried out to obtain a transfer function as the plant model. For real-time control, this study uses a DSP motion control card to execute control algorithm and uses a double-beam laser doppler interferometer for sensing head-disk spacing. A PID control method deals with the PZT bender motion to maintain a stable flying height, in spite of optical disk deformation and flying head vibration during near-field disk rotation at 5400rpm. Tzong-Shi Liu 呂宗熙 2002 學位論文 ; thesis 0 en_US
collection	NDLTD
language	en_US
format	Others
sources	NDLTD
description	碩士 === 國立交通大學 === 機械工程系 === 90 === Based on near-field optics, a flying pickup head is employed in optical disk drives, so as to increase data storage capacity and density. However, it remains to enhance flying height control performance of the pickup head. This study attaches a piezoelectric bender to the pickup head. System identification is carried out to obtain a transfer function as the plant model. For real-time control, this study uses a DSP motion control card to execute control algorithm and uses a double-beam laser doppler interferometer for sensing head-disk spacing. A PID control method deals with the PZT bender motion to maintain a stable flying height, in spite of optical disk deformation and flying head vibration during near-field disk rotation at 5400rpm.
author2	Tzong-Shi Liu
author_facet	Tzong-Shi Liu Po-Ching Liu 劉柏清
author	Po-Ching Liu 劉柏清
spellingShingle	Po-Ching Liu 劉柏清 Flying Height Control for Near-Field Optical Disk Drives Using Piezoelectric Bender
author_sort	Po-Ching Liu
title	Flying Height Control for Near-Field Optical Disk Drives Using Piezoelectric Bender
title_short	Flying Height Control for Near-Field Optical Disk Drives Using Piezoelectric Bender
title_full	Flying Height Control for Near-Field Optical Disk Drives Using Piezoelectric Bender
title_fullStr	Flying Height Control for Near-Field Optical Disk Drives Using Piezoelectric Bender
title_full_unstemmed	Flying Height Control for Near-Field Optical Disk Drives Using Piezoelectric Bender
title_sort	flying height control for near-field optical disk drives using piezoelectric bender
publishDate	2002
url	http://ndltd.ncl.edu.tw/handle/18573373631365049540
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Flying Height Control for Near-Field Optical Disk Drives Using Piezoelectric Bender

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