Please use this identifier to cite or link to this item:
|Title:||Track-following control of four-bar structured hdd via parameter-dependent low-frequency precompensation||Authors:||Guo, Y.
hard disk drive
|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.