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https://doi.org/10.1002/acs.990
Title: | H∞ compensation of external vibration impact on servo performance of hard disk drives in mobile applications | Authors: | Du, C. Ge, S.S. Lewis, F.L. |
Keywords: | Acceleration feedforward External vibration compensation H∞ control Hard disk drives Linear matrix inequality Servo control |
Issue Date: | May-2008 | Citation: | Du, C., Ge, S.S., Lewis, F.L. (2008-05). H∞ compensation of external vibration impact on servo performance of hard disk drives in mobile applications. International Journal of Adaptive Control and Signal Processing 22 (4) : 374-387. ScholarBank@NUS Repository. https://doi.org/10.1002/acs.990 | Abstract: | H∞ compensation for external vibration impact on the positioning accuracy of hard disk drives is considered in this paper. A feedforward controller is designed to attenuate the impact with the aid of a sensor to detect external vibrations. Loop shaping in frequency domain and H∞ method in state space are used to design the feedforward controller. The linear matrix inequality approach is adopted for solving the H∞ feedforward control design problem. The application results in a 1.8-in disk drive with an accelerometer to measure acceleration signal show that 97% reduction of the position error signal is achieved with the feedforward control designed by the H∞ method. The effectiveness of the two methods is also evaluated and compared when external vibration model is subjected to gain variations. Copyright © 2007 John Wiley & Sons, Ltd. | Source Title: | International Journal of Adaptive Control and Signal Processing | URI: | http://scholarbank.nus.edu.sg/handle/10635/82439 | ISSN: | 08906327 | DOI: | 10.1002/acs.990 |
Appears in Collections: | Staff Publications |
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