On reduced order modeling of flexible structures from frequency response data
Proceedings of the European Control Conference, IEEE 2014
1133 - 1138
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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.
Frequency domain analysis
Frequency domain approaches
Non-linear least squares
Reduced order models
Published Version (Please cite this version)http://dx.doi.org/10.1109/ECC.2014.6862456
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