Please use this identifier to cite or link to this item: https://doi.org/10.1177/0142331209339868
Title: Modal parametric identification of flexible mechanical structures in mechatronic systems
Authors: Pang, C.K. 
Lewis, F.L.
Lee, T.H. 
Keywords: Hard disk drives (HDDs)
Least squares error
Mechatronic systems
Modal parameters
System identification
Issue Date: Apr-2010
Source: Pang, C.K., Lewis, F.L., Lee, T.H. (2010-04). Modal parametric identification of flexible mechanical structures in mechatronic systems. Transactions of the Institute of Measurement and Control 32 (2) : 137-154. ScholarBank@NUS Repository. https://doi.org/10.1177/0142331209339868
Abstract: To shorten the development and production time of mechatronic systems, an integrated servo-mechanical design procedure combining mechanical structure prototyping and fast servo evaluation is essential. In this paper, a modal parametric identification procedure is developed for estimation of residues, damping ratios, and natural frequencies of resonant modes for linear-time-invariant flexible mechanical systems. The coefficients and residues of the transfer function model are optimized via two subsequent least squares error optimization criteria in modal summation form. The proposed methodology is verified with experimental frequency responses measured from a commercial dual-stage hard disk drive using a laser Doppler vibrometer. Our results show the effectiveness and robustness of the proposed system identification algorithm for estimating the modal parameters of flexible mechanical structures in mechatronic systems. © 2010 The Institute of Measurement and Control.
Source Title: Transactions of the Institute of Measurement and Control
URI: http://scholarbank.nus.edu.sg/handle/10635/56653
ISSN: 01423312
DOI: 10.1177/0142331209339868
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