公开(公告)号：US08995080B1

公开(公告)日：2015-03-31

申请号：US14502625

申请日：2014-09-30

Applicant: Seagate Technology LLC

Inventor： James Mou ,  Daniel Brown ,  Robert German

IPC: G11B21/02 ,  G11B5/596

CPC classification number: G11B5/40 ,  G11B5/41 ,  G11B5/455

Abstract: Apparatus and method for non-destructive detection of contamination on a slider in a data storage device. In some embodiments, the slider supports a read element adjacent a rotating data recording medium. A non-repeatable runout (NRRO) component of a position error signal (PES) obtained from readback signals transduced from the read element is extracted. A power spectral density (PSD) analysis of the NRRO component is performed to identify a peak power level, and slider contamination is detected responsive to the peak power level.

Abstract translation: 用于在数据存储装置中的滑块上的污染的非破坏性检测的装置和方法。 在一些实施例中，滑块支持与旋转数据记录介质相邻的读取元件。 提取从从读取元件转换的读回信号获得的位置误差信号（PES）的不可重复跳动（NRRO）分量。 执行NRRO组件的功率谱密度（PSD）分析以识别峰值功率电平，并且响应于峰值功率电平检测滑块污染。