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Identification for Robust Control of Flexible Structures

Balas, Gary J. and Doyle, John C. (1989) Identification for Robust Control of Flexible Structures. In: 1989 American Control Conference. IEEE , Piscataway, NJ, pp. 2566-2571.

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An accurate multivariable transfer function model of an experimental structure is required for research involving robust control of flexible structures. Initially, a multi-input/multi-output model of the structure is generated using the finite element method. This model was insufficient due to its variation from the experimental data. Therefore, Chebyshev polynomials are employed to fit the data with a single-input/multi-output transfer function models. Combining these lead to a multivariable model with more modes than the original finite element model. To find a physically motivated model, as ad hoc model reduction technique which uses a priori knowledge of the structure is developed. The ad hoc approach is compared with balanced realisation model reduction to determine its benefits. Plots of select transfer function models and experimental data are included.

Item Type:Book Section
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Doyle, John C.0000-0002-1828-2486
Additional Information:© 1989 IEEE. The authors would like to thank Dr. Harold Stalford for his input and Dr. R. Lane Dailey for the Chebyshev polynomial curve fitting software. The authors acknowledge financial support from the NASA Graduate Student Fellowship, and Caltech President's Fund.
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NASA Graduate Student Research FellowshipUNSPECIFIED
Caltech President’s FundUNSPECIFIED
Record Number:CaltechAUTHORS:20190313-092315130
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Official Citation:G. J. Balas and J. C. Doyle, "Identification for Robust Control of Flexible Structures," 1989 American Control Conference, Pittsburgh, PA, USA, 1989, pp. 2566-2571. doi: 10.23919/ACC.1989.4790620
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93761
Deposited By: Tony Diaz
Deposited On:13 Mar 2019 16:28
Last Modified:16 Nov 2021 17:00

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