Browse > Article

Analysis of Power Loss of an Optical Disc Drive due to the Tilting Motion of a Rotating Disc  

Chong, H.Y. (한양대학교 대학원 기계공학과)
Sung, S.J. (한양대학교 대학원 기계공학과)
Jang, G.H. (한양대학교 기계공학부)
Publication Information
Transactions of the Society of Information Storage Systems / v.6, no.2, 2010 , pp. 57-62 More about this Journal
Abstract
This paper measured and analyzed the source of total power loss of an ODD of a notebook computer. It shows that the biggest power loss is the windage loss due to the friction between rotating disk and surrounding air. It measured the power loss by the tilting motion of a rotating disc which is originated from the unbalanced mass of the rotating disc or the squareness between case-rotor and shaft. The power loss of rotating disc due to tilting motion was also calculated by using FLUENT, and it was correlated with the measured one. This paper shows that the one of the effective methods to reduce the power loss of an ODD is to reduce the tilting motion of a rotating disc.
Keywords
Axial displacement; Optical disc drive; Power loss; Tilting motion; Windage loss;
Citations & Related Records
연도 인용수 순위
  • Reference
1 G. Bertotti, A. Boglietti, M. Chiampi, D. Chiarabaglio, F. Fiorillo, M. Lazzari, 1991, "An Improved Estimation of Iron Losses in Rotating Electrical Machines", IEEE Transactions on Magnetic, Vol.27, No.6, pp.5007-5009   DOI   ScienceOn
2 G. H. Jang, S. H. Oh, S. H. Lee, 2003, "Experimental Study on Whirling, Flying and Tilting Motions of a 3.5 in. FDB Spindle System", Tribology International, Vol.38, Issue6-7, pp. 675-681
3 K. Yasuda, T. Torii, T. Shimizu, 1992, "Self-excited Oscillations of a Circular Disk Rotating in Air", JSME International Journal, Series III, Vol.35, No.3. pp. 347-352
4 J. S. Lee and Y. C. Rhim, 2003, "An Experimental Study of Disc Warping in Slim-type Optical Disc Drive", Proceedings of the KSME 2003 Fall Annual Meeting, pp.676-681
5 G. H. Jang and J. S. Park, 2005, "Development of a Highly Efficient Hard Disk Drive Spindle Motor with a Passive Magnetic Thrust Bearing and a Hydrodynamic Journal Bearing", Journal of Applied Physics, Vol.97, No.10, pp.10Q507-1 - 10Q507-3   DOI
6 G. H. Jang and S. H. Lee, 2006, "Determination of the Dynamic Coefficients of the Coupled Journal and Thrust Bearings by the Perturbation Method", Tribology Letters, Vol. 22, No. 3, pp. 239-246   DOI   ScienceOn
7 J. G. Kim, S. Y. Yang and D. H. Yoo, 2004, "Reduction of Skin Friction Aerodynamically Generated on a Rotating Disk", Proceedings of The Third National Congress on Fluids Engineering, pp. 236-236