Extraction of bearing coefficients of fluid-dynamic bearing spindle motors

In this digest, we report significant improvements over the method developed by Shen et al. [1] to extract bearing coefficients of a fluid-dynamic bearing (FDB) spindle motor in hard disk drives (HDD). An exact formulation is developed to extract bearing coefficients. Angular and radial displacement...

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Bibliographic Details
Main Authors: Shen, I. Y., Mengjun Liu, Gao Feng, Lee Chong Wee, Lin Wuzhong, Ong Eng Hong
Format: Conference Proceeding
Language:English
Subjects:
Accuracy
bearing coefficients
Damping
Fluid dynamics
fluid-dynamic bearings (FDB)
Hard disks
Measurement by laser beam
proof mass
spindle motors
Spinning
Vibrations
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Summary:In this digest, we report significant improvements over the method developed by Shen et al. [1] to extract bearing coefficients of a fluid-dynamic bearing (FDB) spindle motor in hard disk drives (HDD). An exact formulation is developed to extract bearing coefficients. Angular and radial displacements are measured to improve accuracy. Bearing coefficients are extracted successfully via three rounds of experiments.