Automated Design of Track Seeking Controllers for CD-ROM and DVD-ROM

碩士 === 國立臺北科技大學 === 機電整合研究所 === 91 === In order to reduce the data access time of DVD-ROM, a long-seek controller for DVD-ROM will be proposed in this paper. The proposed controller will initially output a maximum voltage to the sled motor and maintain this maximum voltage as long as possible until...

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Main Authors: YING CHE CHEN, 陳瑛哲
Other Authors: Leether Yao
Format: Others
Language:zh-TW
Published: 2003
Online Access:http://ndltd.ncl.edu.tw/handle/79283177209218545230
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spelling ndltd-TW-091TIT006510272015-10-13T13:35:32Z http://ndltd.ncl.edu.tw/handle/79283177209218545230 Automated Design of Track Seeking Controllers for CD-ROM and DVD-ROM CD-ROM及DVD-ROM尋軌控制器之自動設計 YING CHE CHEN 陳瑛哲 碩士 國立臺北科技大學 機電整合研究所 91 In order to reduce the data access time of DVD-ROM, a long-seek controller for DVD-ROM will be proposed in this paper. The proposed controller will initially output a maximum voltage to the sled motor and maintain this maximum voltage as long as possible until the pick-up head is driven close to the target track followed by a braking enforcement. The braking mechanism will slow down the speed of pick-up head and finally park the pick-up to the adjacent neighborhood of target track. The short seek controller will then take over the control task finishing the track seeking. For different ranges of target tracks, the genetic algorithm will be applied to learn the braking start-up track and the following sled motor control strategy driving the pick-up head to the target track in a smooth way. Besides,the reference signals of a long-seek servo controller in CD-ROM and DVD-ROM are based on the speed profile. Engineers usually tune the speed profile and starting voltage of optical disk driver’s sled motor by trial and error method. In this paper, the Genetic Algorithm will be utilized to design a on-line auto-tuning mechanism. With this mechanism, speed profiles as well as the start-up voltage of sled motor will be automatically tuned with a computer. The tuning of every parameter is conducted on line based on track seeking performance. Leether Yao 姚立德 2003 學位論文 ; thesis 130 zh-TW
collection NDLTD
language zh-TW
format Others
sources NDLTD
description 碩士 === 國立臺北科技大學 === 機電整合研究所 === 91 === In order to reduce the data access time of DVD-ROM, a long-seek controller for DVD-ROM will be proposed in this paper. The proposed controller will initially output a maximum voltage to the sled motor and maintain this maximum voltage as long as possible until the pick-up head is driven close to the target track followed by a braking enforcement. The braking mechanism will slow down the speed of pick-up head and finally park the pick-up to the adjacent neighborhood of target track. The short seek controller will then take over the control task finishing the track seeking. For different ranges of target tracks, the genetic algorithm will be applied to learn the braking start-up track and the following sled motor control strategy driving the pick-up head to the target track in a smooth way. Besides,the reference signals of a long-seek servo controller in CD-ROM and DVD-ROM are based on the speed profile. Engineers usually tune the speed profile and starting voltage of optical disk driver’s sled motor by trial and error method. In this paper, the Genetic Algorithm will be utilized to design a on-line auto-tuning mechanism. With this mechanism, speed profiles as well as the start-up voltage of sled motor will be automatically tuned with a computer. The tuning of every parameter is conducted on line based on track seeking performance.
author2 Leether Yao
author_facet Leether Yao
YING CHE CHEN
陳瑛哲
author YING CHE CHEN
陳瑛哲
spellingShingle YING CHE CHEN
陳瑛哲
Automated Design of Track Seeking Controllers for CD-ROM and DVD-ROM
author_sort YING CHE CHEN
title Automated Design of Track Seeking Controllers for CD-ROM and DVD-ROM
title_short Automated Design of Track Seeking Controllers for CD-ROM and DVD-ROM
title_full Automated Design of Track Seeking Controllers for CD-ROM and DVD-ROM
title_fullStr Automated Design of Track Seeking Controllers for CD-ROM and DVD-ROM
title_full_unstemmed Automated Design of Track Seeking Controllers for CD-ROM and DVD-ROM
title_sort automated design of track seeking controllers for cd-rom and dvd-rom
publishDate 2003
url http://ndltd.ncl.edu.tw/handle/79283177209218545230
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AT chényīngzhé cdromjídvdromxúnguǐkòngzhìqìzhīzìdòngshèjì
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