NDLI: Robust optimal design of a magnetizer to reduce the harmonic components of cogging torque in a HDD spindle motor

Content Provider	Springer Nature Link
Author	Lee, Changjin Jang, Gunhee
Copyright Year	2014
Abstract	This research proposes a robust optimal design methodology to reduce the cogging torque of a hard disk drive (HDD) spindle motor due to the coil-positioning error of the magnetizer. The design optimization problem of the magnetizer is formulated with an objective function of the cogging torque and the constraints of the torque constant. The coil-positioning errors measured by computerized tomography are considered as the random variables of the robust optimal design problem. Additional design variables of the magnetizer are chosen in the optimization problem, such as back-yoke thickness, notch depth, etc. Magnetic finite element analysis of the HDD spindle motor is also performed to calculate the cogging torque and torque constant. The cogging torque and torque constant of the optimal design are compared with those of the conventional design, demonstrating that the proposed method effectively reduces the cogging toque of the HDD spindle motor.
Starting Page	1497
Ending Page	1504
Page Count	8
File Format	PDF
ISSN	09467076
Journal	Microsystem Technologies
Volume Number	20
Issue Number	8-9
e-ISSN	14321858
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-04-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electronics and Microelectronics, Instrumentation Nanotechnology Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering Hardware and Architecture

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