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The role of asymptotic sampling zero dynamics in the sampled-data control of continuous nonlinear systems

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2 Author(s)
Carrasco, D.S. ; Priority Res. Centre for Complex Dynamic Syst. & Control, Univ. of Newcastle, Callaghan, NSW, Australia ; Goodwin, G.C.

It is known that controllers designed based on an approximate discrete time model can fail when applied to the real process. This is a well studied problem in nonlinear systems theory. Here we exploit recent results on the asymptotic sampling zeros of nonlinear systems to gain insight into one failure mechanism for sampled-data controllers for continuous time nonlinear systems. It is argued that the sampled-data model has to account, in some way, for the sampling zero dynamics if high-bandwidth control of a continuous nonlinear system is required.

Published in:

Decision and Control (CDC), 2013 IEEE 52nd Annual Conference on

Date of Conference:

10-13 Dec. 2013