Abstract
We describe a new iterative method, dynamic iteration using reduced order models (DIRM), for simulation of large scale modular systems using reduced order models that preserve the interconnection structure. This method may be compared to the waveform relaxation technique; however, unlike DIRM, waveform relaxation does not take advantage of model reduction techniques. The DIRM method involves simulating in turn each subsystem connected to model reduced versions of the other subsystems. The data from this simulation is then used to update the reduced model for that particular subsystem. We provide analytical results on convergence and accuracy of the DIRM method as well as numerical examples that demonstrate the success of DIRM and verify the analysis.
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