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Title: Adaptive disturbance rejection in the presence of uncertain resonance mode in hard disk drives
Authors: Hong, F.
Du, C.
Tee, K.P.
Ge, S.S. 
Keywords: Adaptive control
Disturbance rejection
Hard disk drive
Peak filter
Issue Date: 2009
Citation: Hong, F., Du, C., Tee, K.P., Ge, S.S. (2009). Adaptive disturbance rejection in the presence of uncertain resonance mode in hard disk drives. Proceedings of the American Control Conference : 3244-3249. ScholarBank@NUS Repository.
Abstract: An adaptive on-line scheme is designed to identify the uncertain and time-varying resonance modes in hard disk drive servo systems. Based on the identified results, the uncertain resonance mode is extracted and a peak filter is designed accordingly to provide stronger capability of disturbance suppression. The scheme does not require any extra excitation signal nor additional signal processing for the parameter identification. Compared to conventional method, the rates of learning and error convergence are greatly increased. The scheme can provide good stability margin at high frequency subject to the variation of the resonance frequency and the peak gain. Simulation results show the validity and effectiveness of the proposed scheme. © 2009 AACC.
Source Title: Proceedings of the American Control Conference
ISBN: 9781424445240
ISSN: 07431619
DOI: 10.1109/ACC.2009.5159870
Appears in Collections:Staff Publications

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