NDLI: FEA-based Optimal Design of the Radial Magnetic Bearings in Magnetic Suspended Hard Disk Drive

Content Provider	IEEE Xplore Digital Library
Author	Guoping Ding Zude Zhou Yefa Hu Daxing He
Copyright Year	2006
Description	Author affiliation: Sch. of Electromech. Eng., Wuhan Univ. of Technol., Hubei (Guoping Ding; Zude Zhou; Yefa Hu; Daxing He)
Abstract	Magnetic suspended hard disk drive (MSHDD) is a novel concept of computer storage device in which conventional spindle bearings are substituted by magnetic bearings and other parts are kept unchanged to largely increase the rotating speed of the disks and actively control vibration of the disks. This paper presents the FEA-based optimization of a radial MB in a MSHDD test rig. The aim is to achieve maximum force in a limited space of the entire construction. The objective function is evaluated by static FEA-based 2D calculations. It includes the creation of the radial MB's FEA model, determination of the nonlinear solution of the magnetic scalar potential and the determination of force by Maxwell's stress tensor method. The optimization method and math model are presented with a detailed optimization flow. The optimization results and the geometry parameters' influence on the radial MB performance is concluded. Evaluated by magnetic field measurement data of the radial magnetic bearing, it is shown that FEA-based optimization achieved the maximum bearing force accurately and efficiently. The optimization has been performed with the FEA software-ANSYS EMAG
Sponsorship	IEEE Intelligent Transportation Syst. Soc
Starting Page	1
Ending Page	6
File Size	5731712
Page Count	6
File Format	PDF
ISBN	0780397215
DOI	10.1109/MESA.2006.296939
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-13
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Machine tool spindles magnetic bearings Magnetic suspended hard disk drive (MSHDD) Optimization methods finite element analysis (FEA) Geometry optimal design Tensile stress Magnetic field measurement Magnetic devices Hard disks Vibration control Magnetic levitation Testing
Content Type	Text
Resource Type	Article

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