Please use this identifier to cite or link to this item: https://doi.org/10.1109/ICCA.2009.5410382
Title: System identification of modal parameters in dual-stage hard disk drives
Authors: Pang, C.K. 
Lewis, F.L.
Issue Date: 2009
Source: Pang, C.K., Lewis, F.L. (2009). System identification of modal parameters in dual-stage hard disk drives. 2009 IEEE International Conference on Control and Automation, ICCA 2009 : 603-608. ScholarBank@NUS Repository. https://doi.org/10.1109/ICCA.2009.5410382
Abstract: To shorten the development and production time of Hard Disk Drives (HDDs), an integrated servo-mechanical design procedure combining mechanical structure prototyping and fast servo evaluation is essential. In this paper, a system identification procedure is developed for estimation of residues, damping ratios, and natural frequencies of resonant modes for the actuators in a dual-stage HDD. The coefficients and residues of the transfer function model are optimized via two subsequent Least Squares (LS) error optimization criterions in modal summation form. The proposed methodology is verified with experimental frequency responses measured from a commercial dual-stage HDD using the Laser Doppler Vibrometer (LDV). Our results show the effectiveness of the proposed system identification algorithm in estimating the modal parameters of flexible mechanical actuators. ©2009 IEEE.
Source Title: 2009 IEEE International Conference on Control and Automation, ICCA 2009
URI: http://scholarbank.nus.edu.sg/handle/10635/71929
ISBN: 9781424447060
DOI: 10.1109/ICCA.2009.5410382
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