薄型DVD装置用対物レンズアクチュエータの開発(機械力学,計測,自動制御)

概要

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We have developed an objective lens actuator for slim DVD drives to improve the vibration characteristics, so that the servo-control range can be expanded. To reduce the higher-order resonance peak resulting from elastic deformation of the moving part, we took the vibration modes into consideration in designing the actuator structure. Thus, we could lighten the actuator and reduce the resonance peak without increasing its stiffness. Our experiments showed that the amplitude of higher-order resonance at 16 kHz in the auto-focusing direction was reduced to less than 3 dB. The acceleration sensitivities in the auto-focusing and tracking directions were 97 and 92 m/s^2/V, respectively. These values meet the requirements for 8X DVD-ROM and 32X CD-ROM drives.
社団法人日本機械学会の論文
2002-10-25