Title :
Improvement of Dynamic Characteristics for Symmetric-Type Slim Optical Pickup Actuator by Changing Coil Shape
Author :
Lee, Dong-Ju ; Song, Myeong-Gyu ; Kim, Choong ; Park, No-Cheol ; Park, Young-Pil ; Onagi, Nobuaki ; Akanuma, Goichi
Author_Institution :
Center for Inf. Storage Devices, Yonsei Univ., Seoul
Abstract :
As rotational speed and track density of disk media in optical disk drives increases, an optical pickup actuator must have a high servo bandwidth for its focusing and tracking control to follow disk fluctuations. In this paper, we propose an efficient method to improve control bandwidth of actuators through changing the shape of cross section of coils without redesigning structural parts
Keywords :
actuators; coils; disc drives; optical disc storage; changing coil shape; disk fluctuations; optical disk drives; symmetric-type slim optical pickup actuator; Acceleration; Actuators; Bandwidth; Coils; Frequency; Optical devices; Optical recording; Optical sensors; Servomechanisms; Shape control; Actuators; coils; design; frequency response; optical recording; stability;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.888423
