Improvement of Dynamic Characteristics for Symmetric-Type Slim Optical Pickup Actuator by Changing Coil Shape

• Published in: IEEE transactions on magnetics Vol. 43; no. 2; pp. 808 - 810
• Main Authors: Dong-Ju Lee, Myeong-Gyu Song, Choong Kim, No-Cheol Park, Young-Pil Park, Onagi, N., Akanuma, G.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01-02-2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Acceleration; Actuators; Bandwidth; Coiling; Coils; Cross sections; Cross-disciplinary physics: materials science; rheology; Density; design; Disks; Exact sciences and technology; Focusing; Frequency; frequency response; Magnetism; Materials science; Optical devices; Optical pickups; Optical recording; Optical sensors; Other topics in materials science; Physics; Servomechanisms; Shape control; stability; Coils; Design; Proceedings; Actuators; Stability; Optical recording; Recording material; frequency response; Magnetic recording
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2006.888423

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