Please use this identifier to cite or link to this item:
https://doi.org/10.1109/TMAG.2013.2256109
Title: | Track-following control of four-bar structured hdd via parameter-dependent low-frequency precompensation | Authors: | Guo, Y. Gao, T. Xie, L. Du, C. Ong, C.J. |
Keywords: | Four-bar structure hard disk drive precompensation track-following control |
Issue Date: | 2013 | Citation: | Guo, Y., Gao, T., Xie, L., Du, C., Ong, C.J. (2013). Track-following control of four-bar structured hdd via parameter-dependent low-frequency precompensation. IEEE Transactions on Magnetics 49 (6) : 2731-2737. ScholarBank@NUS Repository. https://doi.org/10.1109/TMAG.2013.2256109 | Abstract: | This paper considers track-following control of four-bar structured hard disk drive (HDD) systems. Compared with the traditional single-arm HDD, the four-bar structure potentially leads to higher achievable closed-loop bandwidth, but also brings challenges in control design due to nonlinearity. In track-following control design, exact linearization is impossible in practice due to mechanic resonances and measurement constraints. In this paper, instead of exact linearization, we propose a kind of prefilter to compensate for the low-frequency nonlinearities so that the compensated system has the same linear approximation at different track positions subjected to different high-frequency resonances. With this prefilter, many existing track-following control methods can be applied to the compensated plant. In this paper, H∞ loop shaping is used and simulation results show that the resulting controller preserves similar track-following performance at different track positions. © 1965-2012 IEEE. | Source Title: | IEEE Transactions on Magnetics | URI: | http://scholarbank.nus.edu.sg/handle/10635/85802 | ISSN: | 00189464 | DOI: | 10.1109/TMAG.2013.2256109 |
Appears in Collections: | Staff Publications |
Show full item record
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.