scholarly journals Implementation of Robust Direct Seek Control System for High-Speed Rotational Optical Disk Drives

2002 ◽  
Vol 8 (7) ◽  
pp. 539-546
Keyword(s):  
Control System ◽  
High Speed ◽  
Optical Disk ◽  
Disk Drives

Control System for Suppressing Tracking Error Offset and Multiharmonic Disturbance in High-Speed Optical Disk Systems

2012 ◽  
Vol 132 (3) ◽  
pp. 347-356 ◽  
Author(s):  
Yuta Nabata ◽  
Tatsuya Nakazaki ◽  
Tokoku Ogata ◽  
Kiyoshi Ohishi ◽  
Toshimasa Miyazaki ◽  
...  
Keyword(s):  
Control System ◽  
High Speed ◽  
Tracking Error ◽  
Optical Disk

Focusing control system for suppressing multi-harmonic disturbances in high speed optical disk systems

2012 ◽  
Author(s):  
Tatsuya Nakazaki ◽  
Tokoku Ogata ◽  
Kiyoshi Ohishi ◽  
Toshimasa Miyazaki ◽  
Daiichi Koide ◽  
...  
Keyword(s):  
Control System ◽  
High Speed ◽  
Optical Disk

High-Speed Tracking Control System for Broadcast-Use Optical Disk Drive

2006 ◽  
Vol 45 (2B) ◽  
pp. 1187-1192 ◽  
Author(s):  
Daiichi Koide ◽  
Haruki Tokumaru ◽  
Kiyoshi Ohishi ◽  
Kazuyoshi Kuramochi ◽  
Toshimasa Miyazaki
Keyword(s):  
Control System ◽  
Tracking Control ◽  
High Speed ◽  
Disk Drive ◽  
Optical Disk ◽  
Optical Disk Drive ◽  
Speed Tracking ◽  
Speed Tracking Control

Focusing Actuator for Magneto-optical Disk Drives

1993 ◽  
Vol 5 (4) ◽  
pp. 326-331
Author(s):  
Junichi Ichihara ◽  
◽  
Koichi Tezuka ◽  
Akihiko Makita
Keyword(s):  
High Speed ◽  
Hard Disk Drives ◽  
Higher Order ◽  
Optical Disk ◽  
Leaf Spring ◽  
Disk Drives ◽  
Mechanical Resonance ◽  
High Speed Rotation ◽  
Speed Rotation ◽  
And Performance

Magneto-optical disk drives have some disadvantages compared with hard disk drives such as low access speed and low data rate. A small-light optical head and high speed rotation of the drive would improve the performance , as well as achieving over write. This paper details the development of a small-light focusing actuator, which can be used in high speed rotation of disks and make optical heads small and thin. It discusses the actuator suspension which raises the frequencies of higher order mechanical resonance. It also includes a parallel leaf spring suspension with the visco-elastic damping layer. It experimentally evaluates the vibration characteristics. Results show that the frequencies of higher order mechanical resonance are above 50kHz. The actuator is driven by a novel moving coil motor which makes the moving part thin and stiff. This paper describes the design and performance of the motor.

High-Speed Tracking Control System for Broadcast-Use Optical Disk Drive

2005 ◽  
Author(s):  
Daiichi Koide ◽  
Haruki Tokumaru ◽  
Kiyoshi Ohishi ◽  
Kazuyoshi Kuramochi ◽  
Toshimasa Miyazaki
Keyword(s):  
Control System ◽  
Tracking Control ◽  
High Speed ◽  
Disk Drive ◽  
Optical Disk ◽  
Optical Disk Drive ◽  
Speed Tracking ◽  
Speed Tracking Control

A disturbance suppression control system for car-mounted and portable optical disk drives

1994 ◽  
Vol 40 (2) ◽  
pp. 92-99 ◽  
Author(s):  
E. Yokoyama ◽  
M. Nagasawa ◽  
T. Katayama
Keyword(s):  
Control System ◽  
Optical Disk ◽  
Disk Drives ◽  
Disturbance Suppression

High-speed tracking servo of modified ZPET-feedforward control for optical disk drives

2009 ◽  
Author(s):  
Daiichi Koide ◽  
Yoshimichi Takano ◽  
Haruki Tokumaru ◽  
Kiyoshi Ohishi ◽  
Yoshiya Kamigaki ◽  
...  
Keyword(s):  
High Speed ◽  
Feedforward Control ◽  
Optical Disk ◽  
Disk Drives ◽  
Speed Tracking

Direct seek control scheme for high-speed rotational optical disk drives

1998 ◽  
Vol 34 (15) ◽  
pp. 1476 ◽  
Author(s):  
Kyoung Bog Jin ◽  
Hyung Kyi Lee ◽  
Myung Jin Chung
Keyword(s):  
High Speed ◽  
Optical Disk ◽  
Disk Drives ◽  
Control Scheme
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