Browse > Article
http://dx.doi.org/10.5050/KSNVN.2007.17.6.539

Disk Vibration and Eccentricity Compensation of Near Field Recording Systems Based on the Internal Model Principle  

Jeong, Jun (동양공업전문대학 자동화시스템과)
Kim, Joong-Gon (연세대학교 정보저장기기 연구센터)
Park, No-Cheol (연세대학교 정보저장기기 연구센터)
Yang, Hyun-Seok (연세대학교 기계공학과)
Park, Young-Pil (연세대학교 기계공학과)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.17, no.6, 2007 , pp. 539-546 More about this Journal
Abstract
Information storage devices using disks have a disk vibration at the frequency which is equivalent to the disk rotational speed. They also have a track vibration due to the disk eccentricity at the same frequency. In near field recording systems, the former affects the air-gap servo and the latter affects the tracking servo. In this paper, we introduce a novel control algorithm based on the internal model principle to both servos. A controller block designed by the principle is connected to the base lead-lag type compensator in parallel in order to cancel the repeatable run-out due to the disk vibration or eccentricity. Simulation and practical application of the algorithm on a near field recording system show good servo performance.
Keywords
Gap Servo; Tracking Servo; Disk Vibration; Eccentricity; NFR; IMP;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Shinoda, M., Saito, K., Ishimoto, T., Kondo, T., Nakaoki, A, Ide, N., Furuki, M., Takeda, M., Akiyama, Y., Shimouma, T. and Yamamoto, M., 2005, 'High Density Near Field Optical Recording', Jpn, J. Appl, Phys, Vol. 44, No. 5B, pp. 3537-3541   DOI
2 Ishmoto, T., Saito, K., Shinoda, M., Kondo, T., Nakaoki, A. and Yamamoto, M., 2003, 'Gap Servo System for a Biaxial Device Using an Optical Gap Signal in a Near Field Readout System', Jpn. J. Appl. Phys. Vol. 42, No. 5A, pp. 2719-2724   DOI
3 Zijp, F., Van der Mark, M., Verschuren, C, Lee, J. I., Van den Eerenbeemd, J., Urbach, P. and Van der AA, M., 2005, 'High Density Near Field Optical Recording with a Solid Immersion Lens, Conventional Actuator, and a Robust Air Gap Servo', IEEE Transl. J. Magn., Vol. 41, pp. 1042-1046   DOI   ScienceOn
4 Choi, J. Y., Lee, K. H., Jun, H. G., Lee, M. N., Yang, H. S., Park, N. C. and Park, Y. P., 2006, 'Disturbance Analysis in an Optical Disk Drive Using Model Based Disturbance Observer and Waterfall Technique', Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 16, No. 1, pp. 40-49   과학기술학회마을   DOI   ScienceOn
5 Bodson, M., Sacks, A. and Khosla, P., 1994, 'Harmonic Generation in Adaptive Feedforward Cancellation Schemes', IEEE Transactions on Automatic Control, Vol. 39, No. 9, pp. 1939-1944   DOI   ScienceOn
6 Choi, J. Y., Lee, K. H., Yang, H. S., Park, N. C. and Park, Y. P., 2005, 'Robust Servo Design and Application for Optical Disk Drive Using Robust Control Theory: $H{\infty}$ vs. QFT', Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 15, No. 9, pp. 1148-1159   과학기술학회마을   DOI   ScienceOn
7 Ichimura, I., Hayashi, S. and Kino, G. S., 1997, 'High-density Optical Recording Using a Solid Immersion Lens', Appl, Opt, Vol. 36, issue. 19, pp, 4339-4348   DOI
8 Lee, J. I., Van der AA, M., Verschuren, C., Zijp, F. and Van der Mark, M., 2005, 'Development of an Air Gap Servo System for High Data Transfer Rate Near Field Optical Recording', Jpn, J. Appl, Phys, Vol. 44, No. 5B, pp. 3423-3426   DOI
9 Sacks, A., Bodson, M., Messner, W., 1995, 'Advanced Methods for Repeatable Runout Compensation', IEEE Transactions on Magnetics, Vol. 31, No. 2, pp. 1031-1036   DOI   ScienceOn