NDLI: Development of three-axis actuator for HD-DVD

Content Provider	IEEE Xplore Digital Library
Author	Dong-Ju Lee Kang-Nyung Lee No-Cheol Park Young-Pil Park
Copyright Year	1965
Abstract	There is much research being conducted on developing information storage devices based on formats of Blu-ray Disc (BD) and HD-DVD with requirements for high-density storage devices. This trend is set toward the use of a short-wave length laser and objective lens (OL) with high numerical aperture in optical storage devices. However, it causes the rapid decrease of tilt margin. Therefore, it is necessary that an actuator control tilt motion and have fast access time to get a stable signal. In this paper, a mathematical form of a three-degrees-of-freedom (DOF) coupled model was formulated and magnetic circuit in mechanical constraints was efficiently designed through at trial-and-error method using electromagnetic (EM) analysis. Finally, in order to have fast access time, a three-axis actuator whose rotational center is put on a lens center through redesign of tilting magnetic circuit was suggested. This design targets were evaluated by experiments.
Sponsorship	IEEE Magnetics Society
Starting Page	1050
Ending Page	1052
Page Count	3
File Size	530653
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Actuators Lenses Optical devices Electromagnetic coupling Magnetic circuits Apertures Motion control Coupling circuits Mathematical model Electromagnetic modeling rotating bodies design magnetic circuits optical memories
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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