硬盘磁头滑块径向飞行特性分析

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摘要在硬盘工作过程中，磁头滑块径向飞行特性对硬盘的工作性能有重要影响。根据硬盘磁头/磁盘界面Reynolds方程和动力学方程，研究了磁盘径向位置变化对磁头滑块飞行特性的影响，同时，分析了滑块最小飞高、俯仰角和侧倾角的变化对滑块动态径向飞行特性的影响。研究得出：磁盘半径位置对滑块静态和动态飞行特性影响明显，且在不同初始最小飞高和俯仰角条件下有所区别。半径越大，承载力越大，初滑块始最小飞高越小、俯仰角越大，承载力变化幅度越大；压力中心Xc受初值影响较大，压力中心Yc随半径的增大不断减小。磁头滑块最小飞高、俯仰角和侧倾角随磁盘半径的增大，波动幅度明显增大。滑块动态径向飞行过程中，当寻轨速度不超过2 m/s时，滑块的径向寻轨速度越大，后期飞行越平稳。

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	毛薪然
	杨廷毅
	崔家志
	龚西鹏

关键词 ：硬盘, 有限体积法, 磁盘半径, 径向寻轨速度

Abstract：In the process of hard disk operation, the radial flying characteristic of magnetic head slider has an important effect on the performance of hard disk. According to Reynolds equation and dynamics equation of hard disk head/disk interface, the influence of disk radial position change on the flying characteristics of slider is studied. Meanwhile, the influence of the variation of pitch angle and roll angle on the dynamic radial flying characteristics of slider is analyzed. The results show that: the disk radius position has obvious influence on the static and dynamic flying characteristics of the slider, and it is different under different initial minimum flying height and pitch angle. The larger the radius is, the greater the bearing capacity becomes, and the smaller the initial minimum flying height of the slider is, the greater the pitch angle and the greater the bearing capacity become. The pressure center Xc is greatly affected by the initial value, and the pressure center Yc decreases with the increase of the radius. With the increase of disk radius, the pitch angle ,the roll angle, and the minimum flying height of slider's increase significantly. During the dynamic radial flying of the slider, when the tracking speed of slider is no more than 2 m/s, the greater the radial tracking speed of the slider is, the more stable the later flying become.

Key words： hard disk finite volume method disk radius radial track finding velocity

收稿日期: 2020-03-30 出版日期: 2021-11-15

引用本文:

毛薪然，杨廷毅，崔家志，龚西鹏. 硬盘磁头滑块径向飞行特性分析[J]. 振动与冲击, 2021, 40(21): 69-75.
MAO Xinran, YANG Tingyi, CUI Jiazhi, GONG Xipeng. Analysis of radial flight characteristics of hard disk head slider. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(21): 69-75.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2021/V40/I21/69

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