NDLI: Design of hybrid type’s optical pickup actuator for system stability in high density reading and recording

Content Provider	Springer Nature Link
Author	Lee, Dong Ju Woo, Jung Hyun Park, Cheol Yoo, Jeong hoon Park, Young Pil Onagi, buaki Akanuma, Goichi
Copyright Year	2009
Abstract	Recently, there has been a trend to have large capacity and high data transfer rate in optical disk drive. Pickup actuator also should have high performance for satisfying this trend. Since moving magnet type actuator has more simple and robust structure than moving coil type one, we designed moving magnet type to accomplish high flexible mode frequency. However, the driving sensitivity of moving magnet type actuator was low because of its characteristics as following. At first, moving parts including magnets are heavy and electromagnetic (EM) circuits are not closed-loop owing to yoke composed of paramagnetic materials. Therefore, in order to increase the driving sensitivity without the degradation of the other dynamic characteristics, EM circuits were redesigned by adding solenoid coils on existing mechanism. As a result, the hybrid type actuator composed of moving magnet type and moving coil type was suggested to obtain high sensitivities and high flexible mode frequency. Design variables of EM circuits and structure parts were decided through parametric study and design of experiments procedure. Optimization algorithm using variable metric method was used to improve performance. Based on these results, the final model was presented.
Starting Page	1729
Ending Page	1735
Page Count	7
File Format	PDF
ISSN	09467076
Journal	Microsystem Technologies
Volume Number	15
Issue Number	10-11
e-ISSN	14321858
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-05-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electronics and Microelectronics, Instrumentation Mechanical Engineering Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering Hardware and Architecture

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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
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