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|Title:||Frequency domain identification of transfer function model of a disk drive actuator|
|Authors:||Al Mamun, A. |
|Keywords:||Frequency domain identification|
Hard disk drive actuator
|Citation:||Al Mamun, A., Lee, T.H., Low, T.S. (2002-05). Frequency domain identification of transfer function model of a disk drive actuator. Mechatronics 12 (4) : 563-574. ScholarBank@NUS Repository. https://doi.org/10.1016/S0957-4158(01)00007-1|
|Abstract:||In this paper, we present a method of identifying the transfer function model of a linear time-invariant (LTI) dynamic system from its frequency response data. The presented algorithm is based on the principle of least-square fit on the complex plane. It fits the frequency response data to the response of a transfer function model, minimizing the sum of square of residual errors. Thus a transfer function model is extracted from the measurement of the frequency response at a discrete set of frequencies. We select the order of the transfer function model through the interpretation of the cost functions obtained from least-square estimation (LSE) for different orders of the transfer function.The effectiveness of the proposed technique is verified by estimating the transfer function model of a hard disk drive actuator. © 2002 Elsevier Science Ltd. All rights reserved.|
|Appears in Collections:||Staff Publications|
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