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Proceedings Paper

High-accuracy detection and data processing of NRRO of spindle motor for HDD
Author(s): Zhonglei Fan; Jiangming Ni; Yiseng Huang; Xiaokun Zhu
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Paper Abstract

The Non-Repeatable Runout (NRRO) of spindle motor is one of the important parameters in high-recording-density hard disk drive. In this paper, NRRO is investigated by using high precision transducers and measurement systems. A software method is provided to solve the synchronous signal problem that is being presently solved by using hardware apparatus in the same case such as optical encoder etc. This system can be applied for the in-process measurement of NRRO for hard disk drive.

Paper Details

Date Published: 1 April 1998
PDF: 4 pages
Proc. SPIE 3275, Flatness, Roughness, and Discrete Defects Characterization for Computer Disks, Wafers, and Flat Panel Displays II, (1 April 1998); doi: 10.1117/12.304404
Show Author Affiliations
Zhonglei Fan, Huazhong Univ. of Science and Technology (China)
Jiangming Ni, Huazhong Univ. of Science and Technology (China)
Yiseng Huang, Huazhong Univ. of Science and Technology (China)
Xiaokun Zhu, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 3275:
Flatness, Roughness, and Discrete Defects Characterization for Computer Disks, Wafers, and Flat Panel Displays II
John C. Stover, Editor(s)

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