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The Effect of Platter Resonances on Track Misregistration in Disk Drives

机译：盘片共振对磁盘驱动器中磁道未对准的影响

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摘要

With the increase in track density and higher rotation speeds in hard disk drives, effects contributing to track misregistration (TMR) that heretofore have been negligible in the 3.5 inch form factor are now quite significant. One effect is the vibration of the individual disk platters at their natural frequencies. These resonances are driven primarily by internal windage excitation within the head disk assembly (HDA) during operation. This behavior is a characteristic of all 3.5 inch disk drives using 95 x 0.8 mm aluminum disks. The behavior is dominated by the disk material properties and geometry and not by the spindle, enclosure or structural design. This disk vibration contributes a significant amount of track misregistration (TMR). Alternate disk substrate materials should be investigated as a means for controlling these effects.
机译：随着硬盘驱动器中磁道密度的增加和更高的旋转速度，迄今为止在3.5英寸外形尺寸中可以忽略的磁道对准不良（TMR）的影响现在变得非常重要。一种影响是各个磁盘片的固有频率振动。这些共振主要是由运行期间磁头磁盘组件（HDA）内的内部风振激励驱动的。此行为是所有使用95 x 0.8毫米铝制磁盘的3.5英寸磁盘驱动器的特征。该行为由磁盘的材料属性和几何形状决定，而不是由主轴，外壳或结构设计决定。磁盘振动会导致大量磁道重合失调（TMR）。应该研究替代的磁盘基板材料，以控制这些效果。

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