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

Dong Ju Lee, Jung Hyun Woo, No Cheol Park, Jeong Hoon Yoo, Young Pil Park, Nobuaki Onagi, Goichi Akanuma

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)1729-1735
Number of pages7
JournalMicrosystem Technologies
Volume15
Issue number10-11
DOIs
Publication statusPublished - 2009 Oct

Fingerprint

systems stability
Pickups
System stability
Magnets
magnets
Actuators
actuators
recording
sensors
coils
electromagnetism
Networks (circuits)
sensitivity
Paramagnetic materials
Data transfer rates
trends
experiment design
optical disks
Solenoids
solenoids

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Hardware and Architecture
  • Electrical and Electronic Engineering

Cite this

Lee, Dong Ju ; Woo, Jung Hyun ; Park, No Cheol ; Yoo, Jeong Hoon ; Park, Young Pil ; Onagi, Nobuaki ; Akanuma, Goichi. / Design of hybrid type's optical pickup actuator for system stability in high density reading and recording. In: Microsystem Technologies. 2009 ; Vol. 15, No. 10-11. pp. 1729-1735.
@article{f573cb8b9fab4ad6804cb23cc4d3c388,
title = "Design of hybrid type's optical pickup actuator for system stability in high density reading and recording",
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.",
author = "Lee, {Dong Ju} and Woo, {Jung Hyun} and Park, {No Cheol} and Yoo, {Jeong Hoon} and Park, {Young Pil} and Nobuaki Onagi and Goichi Akanuma",
year = "2009",
month = "10",
doi = "10.1007/s00542-009-0875-5",
language = "English",
volume = "15",
pages = "1729--1735",
journal = "Microsystem Technologies",
issn = "0946-7076",
publisher = "Springer Verlag",
number = "10-11",

}

Design of hybrid type's optical pickup actuator for system stability in high density reading and recording. / Lee, Dong Ju; Woo, Jung Hyun; Park, No Cheol; Yoo, Jeong Hoon; Park, Young Pil; Onagi, Nobuaki; Akanuma, Goichi.

In: Microsystem Technologies, Vol. 15, No. 10-11, 10.2009, p. 1729-1735.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Design of hybrid type's optical pickup actuator for system stability in high density reading and recording

AU - Lee, Dong Ju

AU - Woo, Jung Hyun

AU - Park, No Cheol

AU - Yoo, Jeong Hoon

AU - Park, Young Pil

AU - Onagi, Nobuaki

AU - Akanuma, Goichi

PY - 2009/10

Y1 - 2009/10

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84898023256&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84898023256&partnerID=8YFLogxK

U2 - 10.1007/s00542-009-0875-5

DO - 10.1007/s00542-009-0875-5

M3 - Article

AN - SCOPUS:84898023256

VL - 15

SP - 1729

EP - 1735

JO - Microsystem Technologies

JF - Microsystem Technologies

SN - 0946-7076

IS - 10-11

ER -