On reduced order modeling of flexible structures from frequency response data
Author
Demir, Okan
Özbay, Hitay
Date
2014Source Title
Proceedings of the European Control Conference, IEEE 2014
Publisher
IEEE
Pages
1133 - 1138
Language
English
Type
Conference PaperItem Usage Stats
149
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Abstract
In order to identify the dominant flexible modes of a flexible structure with an input/output delay, a numerical method is proposed. The method uses a frequency domain approach (frequency response data) to estimate the resonating frequencies and damping coefficients of the flexible modes, as well as the amount of the time delay. A sequential NLLS (Non-Linear Least Squares) curve fitting procedure is adopted. It is illustrated that such a Newtonian optimization method has the capability of finding the parameters of a reduced order transfer function by minimizing a cost function involving nonlinearities such as exponential and fractional terms.
Keywords
Curve fittingFlexible structures
Frequency domain analysis
Frequency response
Numerical methods
Damping coefficients
Fitting procedure
Flexible mode
Frequency domain approaches
Non-linear least squares
Optimization method
Reduced order models
Resonating frequency
Data reduction
Permalink
http://hdl.handle.net/11693/27363Published Version (Please cite this version)
http://dx.doi.org/10.1109/ECC.2014.6862456Collections
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