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首页> 外文期刊>IEEE Transactions on Magnetics >Non-repeatable runout of ball-bearing spindle-motor for 2.5' HDD
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Non-repeatable runout of ball-bearing spindle-motor for 2.5' HDD

机译：2.5“ HDD的滚珠主轴电机的不可重复跳动

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摘要

Quantitative estimation of non-repeatable runout (NRRO) in head tracking mode on the hard disk drive was performed by an experimental investigation of ball-bearing spindle motor NRRO. The characteristic difference between the spindle motor NRRO and the head tracking error is discussed. This head tracking error is caused by the NRRO in tracking mode and NRRO in servo track writing, taking head tracking control into account. The amplitude of spindle motor NRRO is 130 nm peak-to-peak in this experiment. While the low frequency components of NRRO caused by bearing geometry are compressed, rotor resonance frequency vibrations are predominantly enhanced by the characteristics of the sensitivity function of the head positioning system. The amplitude of the error caused by the motor NRRO is twice as large as that of the motor NRRO itself. Neither of the probability density functions, namely motor NRRO and tracking error caused by NRRO, is Gaussian distribution.
机译：通过对滚珠主轴电动机NRRO进行的实验研究，对硬盘驱动器上的磁头跟踪模式下的不可重复跳动（NRRO）进行了定量估计。讨论了主轴电机NRRO与磁头跟踪误差之间的特性差异。磁头跟踪错误是由跟踪模式下的NRRO和伺服磁道写入中的NRRO引起的，同时考虑了磁头跟踪控制。在此实验中，主轴电机NRRO的峰峰值为130 nm。虽然压缩了由轴承几何形状引起的NRRO的低频分量，但磁头定位系统的灵敏度功能特性大大增强了转子共振频率的振动。由电动机NRRO引起的误差幅度是电动机NRRO本身的两倍。概率密度函数（即电动机NRRO和由NRRO引起的跟踪误差）都不是高斯分布。

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