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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Improvement of System Performance of the Optical Disc Drive Adopting Ferrofluidic Damper for Pick-up Actuator
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Improvement of System Performance of the Optical Disc Drive Adopting Ferrofluidic Damper for Pick-up Actuator

机译:采用铁磁阻尼器的光驱执行器的系统性能改进

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摘要

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.
机译:光学拾取器致动器的机械共振会导致从高速光盘读取信息时出错。磁体表面上的铁磁流体被保留在磁场中,并且其粘性为运动的物质提供了所需的机械阻尼。铁磁流体阻尼器受光学拾取器致动器的饱和磁化强度控制,不仅改善了系统性能,例如在翘曲或偏心盘上驱动器的建立时间和访问时间,而且由于在磁头上感应出过电流而显着延迟了温度升高。线圈。

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