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Discrete positive-real functions and their application to system stability

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2 Author(s)
Hitz, L. ; University of Newcastle, Newcastle, Australia ; Anderson, B.D.O.

A class of discrete-time transfer-function matrices termed discrete positive-real matrices is defined, and a system theoretic description of them is given, analogous to that for ordinary positive-real matrices. This description is applied to analysing the stability of a discrete-time system with linear forward part, and time-varying memoryless feedback.

Published in:

Electrical Engineers, Proceedings of the Institution of  (Volume:116 ,  Issue: 1 )