A Design of a Dynamic Vibration Absorber for a DVD±RW Drive

An optical disk drive is consistently excited by high-speed rotation of a mass-unbalanced disk, which causes vibrations that greatly affect the overall reliability of the reading and writing process. To reduce the vibration, various anti-vibration strategies have been introduced to the optical disk drive industry. One approach is a dynamic vibration absorber. In this paper, the dynamic behavior of a DVDplusmnRW combo drive system with a dynamic vibration absorber was analyzed using a 12 degrees of freedom, rigid, multi-body dynamic model. The effective location and optimal frequency ratio of the dynamic vibration absorber were obtained from the analysis. A dynamic vibration absorber was fabricated based on the analysis and the vibration-reduction performance was confirmed experimentally.