A Frequency-Limited H2 Model Approximation Method with Application to a Medium-Scale Flexible Aircraft
In this paper, the problem of approximating a medium-scale MIMO LTI dynamical system over a bounded frequency range is addressed. A new method grounded on the SVD-Tangential model order reduction framework is proposed. Based on the frequency-limited gramians defined in , the contribution of this paper is to propose a frequency-limited iterative SVD-Tangential interpolation algorithm (FL-ISTIA) to achieve frequency-limited model approximation without involving weighting filters. The efficiency of the approach is addressed both on standard benchmark and on an industrial flexible aircraft model. W. Gawronski and J. Juang. Model reduction in limited time and frequency intervals. International Journal of Systems Science, 21(2):349–376, 1990.