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首页> 外文学位 >Shock-response analysis of a hard-disk drive in tilt-drop tests under non-operating and operating conditions.
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Shock-response analysis of a hard-disk drive in tilt-drop tests under non-operating and operating conditions.

机译：在非运行和运行条件下，在倾斜跌落测试中对硬盘驱动器的冲击响应分析。

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摘要

With the increased use of Hard Disk Drives (HDD) in mobile applications, the demand for higher shock robustness has grown considerably. However, there still exists a wide gap between the current standards and the end user expectations. In Contact Start/Stop (CSS) drives under non-operating conditions, the read/write head is parked on the disk with a small preload. As the drive experiences an external shock, the head lifts off the disk surface and crashes back onto it causing permanent media damage. In operating conditions, the head files a small distance above the disk surface, and the preload is balanced by the air-bearing forces. Any external shock results in the slider drifting away from the read/write track, and may result in a catastrophic data-error.; The tilt-drop test, wherein the drive is pinned at one end and lifted through a prescribed angle at the other is allowed to fall and make an edge-contact on an impact bar, has become a standard qualification criterion for new drives. In the present study, a methodology for simulating shock response in both operating and non-operating conditions, in a tilt-drop situation has been developed. (Abstract shortened by UMI.)
机译：随着移动应用程序中硬盘驱动器（HDD）的使用增加，对更高冲击强度的需求也大大增加。但是，当前的标准与最终用户的期望之间仍然存在很大差距。在非操作条件下的Contact Start / Stop（CSS）驱动器中，读/写磁头以很小的预载停放在磁盘上。当驱动器受到外部冲击时，磁头会抬起磁盘表面，然后撞回磁盘表面，从而造成永久性介质损坏。在运行条件下，磁头在磁盘表面上方的距离很小，并且预载受空气压力的影响。任何外部冲击都会导致滑块偏离读/写轨道，并可能导致灾难性的数据错误。倾斜跌落测试已成为新驱动器的标准认证标准，其中驱动器的一端被固定，另一端被提升通过指定的角度，允许其掉落并与冲击杆发生边缘接触。在本研究中，已经开发了一种在倾斜和跌落情况下模拟在运行和非运行条件下的冲击响应的方法。 （摘要由UMI缩短。）

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