Improvement of System Performance of the Optical Disc Drive Adopting Ferrofluidic Damper for Pick-up Actuator

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概要

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• Mechanical resonance of optical pick-up actuators can cause errors in reading information from high-speed optical discs. Ferrofluid on the surface of magnets is retained in a magnetic field and its viscosity provides the desired mechanical damping to a moving mass. A ferrofluidic damper that is controlled by saturation magnetization for an optical pick-up actuator not only improves system performance such as settling time and access time of a drive on warped or eccentric discs but also remarkably delays temperature increase due to the induction of overcurrent on the coils.

• 2007-06-30

著者

• Song Byung

  School of Mechanical and Aerospace Engineering, Seoul National University, San 56-1, Sinlim9-Dong, Kwanak-Gu, Seoul 151-744, Korea

• Jang Dae

  Toshiba Samsung Storage Technology, 416 Maetan 3-Dong, Youngtong-Gu, Suwon 442-742, Korea

• Lee Young

  Toshiba Samsung Storage Technology, 416 Maetan 3-Dong, Youngtong-Gu, Suwon 442-742, Korea

• Lee Junghoon

  School of Mechanical and Aerospace Engineering, Seoul National University, San 56-1, Sinlim9-Dong, Kwanak-Gu, Seoul 151-744, Korea

関連論文

• Improvement of System Performance of the Optical Disc Drive Adopting Ferrofluidic Damper for Pick-up Actuator

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