1 April 1998 High-accuracy detection and data processing of NRRO of spindle motor for HDD
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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.
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Zhonglei Fan, Zhonglei Fan, Jiangming Ni, Jiangming Ni, Yiseng Huang, Yiseng Huang, Xiaokun Zhu, Xiaokun Zhu, "High-accuracy detection and data processing of NRRO of spindle motor for HDD", 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; https://doi.org/10.1117/12.304404
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