Title: Accuracy and efficiency enhanced non-linear model order reduction

Authors: Hamid Reza Shaker, Mahmoud Samavat

Addresses: Department of Electrical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran. ' Department of Electrical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran

Abstract: A new method for model order reduction for an important class of non-linear dynamical systems is proposed. The reduction technique is based on the frequency balanced reduction method within a desired frequency band and a developed Trajectory Piecewise-Linear (TPWL) model order reduction approach. Both the methods are recently developed techniques and they can increase the accuracy and efficiency of the reduction method. The computational load and memory are significantly reduced when the method is used in the hybrid reduction method. The accuracy enhanced hybrid method is applicable to very large scale non-linear models efficiently and accurately. The numerical results show the accuracy and efficiency enhancement of the proposed method.

Keywords: model order reduction; MOR; nonlinear dynamical systems; trajectory piecewise-linear MOR; TPWL; frequency domain balanced truncation; hybrid reduction; modelling.

DOI: 10.1504/IJMIC.2007.014627

International Journal of Modelling, Identification and Control, 2007 Vol.2 No.2, pp.147 - 153

Published online: 21 Jul 2007 *

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