Title :
An Evaluation Method for Spindle Motor Runout Measurement
Author :
Huang, Jichang ; Bi, C.
Author_Institution :
Data Storage Inst., A*STAR, Singapore, Singapore
Abstract :
In order to study the vibration characterization of a spindle motor, the rotor runout must be measured accurately. In this paper, a method based on measurement uncertainty is presented to evaluate different measurement systems and measurement confidence. The principle optic interferometer (iRVM) system is introduced in this paper, which is based on optical interference technology. The results of the iRVM are compared with another two methods that make use of capacitance probe and laser Doppler velocimetry.
Keywords :
disc drives; hard discs; light interferometry; measurement uncertainty; micromotors; capacitance probe; evaluation method; hard disk drive; laser Doppler velocimetry; measurement uncertainty; nonrepeatable runout; optic interferometer system; optical interference technology; rotor runout; spindle motor runout measurement; vibration characterization; Bismuth; Capacitance measurement; Hard disks; Instruments; Measurement uncertainty; Optical interferometry; Optical recording; Personnel; Probes; Vibration measurement; Displacement measurement; Doppler measurements; hard disks; micromotors; optical interferometer; uncertainty;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2029644
