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스핀들 회전축계의 기전 연성 해석을 이용한 모바일 HDD의 자유 낙하 특성 및 감지에 관한 연구Characterization and Detection of a Free-falling State of a Mobile HDD Using the Electromechanical Analysis in a Rotating Spindle System
- Other Titles
- Characterization and Detection of a Free-falling State of a Mobile HDD Using the Electromechanical Analysis in a Rotating Spindle System
- Issue Date
- Dec-2005
- Publisher
- 한국소음진동공학회
- Keywords
- Brushless DC Motor; 브러시리스 직류 전동기; Fluid Dynamic Bearing; 유체 동압 베어링; Free- fall; 자유 낙하; Hard Disk Drive; 하드디스크 드라이브; Rotor Dynamics; 회전체 동역학; Time-Stepping Finite Element Method; 시간 차분 유한 요소법
- Citation
- 한국소음진동공학회논문집, v.16, no.1, pp 12 - 18
- Pages
- 7
- Indexed
- KCI
- Journal Title
- 한국소음진동공학회논문집
- Volume
- 16
- Number
- 1
- Start Page
- 12
- End Page
- 18
- ISSN
- 1598-2785
2287-5476
- Abstract
- This research investigates the electromechanical characteristics of a spindle motor in a free-falling mobile hard disk drive before unexpected shock. Electromechanical simulation includes a time-stepping finite element analysis of the magnetic field in a speed controlled brushless DC motor and dynamic analysis of the stationary and rotating part linked by the fluid dynamic bearing under the free-falling condition. Analysis results show that the dynamic characteristics of the rotating spindle system during free-falling state have an effect on the relative motion between the stationary and rotating part of HDD. It results from the variation of reaction force in the bearing area due to the gravity force exerted on the rotating part of HDD, and the free-falling condition can be detected by observing the signal of the spindle motor and disk-head interface without using an accelerometer.
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Collections - 서울 공과대학 > 서울 기계공학부 > 1. Journal Articles
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