Mimo Interactions in Sampled Data Systems

Abstract

In this paper, a MIMO interaction measure is used to analyze how the interaction evolves in the context of sampled data control, as a function of the sampling frequency. The basic tool is the Participation Matrix, which is a measure of the dynamic interaction in stable MIMO systems. This measure provides support for decentralized input-output pairing as well as for a richer controller architecture selection, including triangular, block diagonal and sparse structures. It is shown that the controller structure selection may be significantly dependant on the sampling period.