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Mixed domain analysis of MIMO dynamic interactions

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2 Author(s)
Mario E. Salgado ; Department of Electronic Engineering, Universidad Técnica Federico Santa María (UTFSM), Casilla 110-V, Valparaíso, Chile. mario.salgado@elo.utfsm.cl ; Juan I. Yuz

In this paper, a mixed domain interpretation is given for the participation matrix, a MIMO complexity reduction strategy based upon gramians. It is shown that dominant dynamic interactions in stable MIMO linear systems can be captured using a time domain characterisation and, via Parseval, a frequency domain interpretation. The approach can be applied to stable continuous-time, as well as discrete-time MIMO systems. It provides support for decisions on plant model reduction, and consequently on controller structure selection and policy making. Moreover, the time-domain result is exploited to obtain a participation matrix estimate directly from input-output data.

Published in:

2007 IEEE International Conference on Networking, Sensing and Control

Date of Conference:

15-17 April 2007